{"id":258,"date":"2026-05-19T16:46:19","date_gmt":"2026-05-19T16:46:19","guid":{"rendered":"https:\/\/convly.ai\/apple-m4-max-vs-rtx-5090-ai-workloads\/"},"modified":"2026-06-10T05:05:32","modified_gmt":"2026-06-10T05:05:32","slug":"apple-m4-max-vs-rtx-5090-ai-workloads","status":"publish","type":"post","link":"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/","title":{"rendered":"Apple M4 Max vs Nvidia RTX 5090 for AI Workloads: Unified Memory or Brute Force?"},"content":{"rendered":"<p>Choosing between a maxed <strong>MacBook Pro \/ Mac Studio M4 Max<\/strong> and an <strong>RTX 5090 workstation<\/strong> for AI work in 2026 isn&#8217;t a comparison of two GPUs. It&#8217;s a comparison of two entire computing philosophies \u2014 <strong>unified memory and silent efficiency<\/strong> versus <strong>discrete VRAM and brute throughput<\/strong> \u2014 and the right choice depends almost entirely on which models you intend to run.<\/p>\n<p>We&#8217;ve used both systems daily for three months on the same set of AI workloads. Here&#8217;s what actually matters when picking between them in 2026.<\/p>\n<div class=\"convly-tldr\">\n<h3>Punti chiave<\/h3>\n<ul>\n<li>Il <strong>RTX 5090<\/strong> is roughly 2.5\u00d7 faster per token for models that fit in its 32 GB VRAM.<\/li>\n<li>Il <strong>M4 Max 128 GB<\/strong> runs models 4\u00d7 bigger than the 5090 can \u2014 at lower per-token speed.<\/li>\n<li>Per <strong>image and video generation<\/strong>, the 5090 wins decisively (CUDA + bandwidth).<\/li>\n<li>Per <strong>research \/ long-context LLM work \/ 100B+ models<\/strong>, the M4 Max wins.<\/li>\n<li>Per <strong>portability<\/strong>, there&#8217;s no contest \u2014 the M4 Max is in a laptop.<\/li>\n<li>Total system cost: ~$2,600 (5090 workstation) vs ~$5,000 (M4 Max 128 GB MacBook).<\/li>\n<\/ul>\n<\/div>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 counter-flat ez-toc-counter ez-toc-container-direction\">\n<label for=\"ez-toc-cssicon-toggle-item-6a38aece289e6\" class=\"ez-toc-cssicon-toggle-label\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Attiva\/Disattiva<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #000000;color:#000000\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #000000;color:#000000\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/label><input type=\"checkbox\"  id=\"ez-toc-cssicon-toggle-item-6a38aece289e6\"  aria-label=\"Attiva\/Disattiva\" \/><nav><ul class='ez-toc-list ez-toc-list-level-1' ><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/#What_youre_actually_comparing\" >What you&#8217;re actually comparing<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/#The_architecture_difference_in_one_paragraph\" >The architecture difference, in one paragraph<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/#LLM_inference_%E2%80%94_the_model-size_question\" >LLM inference \u2014 the model-size question<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/#Image_and_video_generation\" >Image and video generation<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/#Fine-tuning_and_training\" >Fine-tuning and training<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/#Software_ecosystem_in_2026\" >Software ecosystem in 2026<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/#Total_cost_of_ownership\" >Total cost of ownership<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/#Use-case_verdicts\" >Use-case verdicts<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/#The_hybrid_pro_setup\" >The hybrid pro setup<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/#FAQ\" >Domande frequenti<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/#Bottom_line\" >Conclusione<\/a><\/li><li class='ez-toc-page-1'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/convly.ai\/it\/apple-m4-max-vs-rtx-5090-ai-workloads\/#Related_articles\" >Articoli correlati<\/a><\/li><\/ul><\/nav><\/div>\n<h2><span class=\"ez-toc-section\" id=\"What_youre_actually_comparing\"><\/span>What you&#8217;re actually comparing<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The RTX 5090 is a GPU, so the workstation comparison includes the rest of the system. The realistic builds at end-of-2026 prices:<\/p>\n<table class=\"convly-vs\">\n<thead>\n<tr>\n<th>Specifiche<\/th>\n<th>RTX 5090 workstation<\/th>\n<th>MacBook Pro M4 Max 16\u2033<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Compute<\/td>\n<td>RTX 5090 + Ryzen 9 9950X<\/td>\n<td>Apple M4 Max (16-core CPU, 40-core GPU)<\/td>\n<\/tr>\n<tr>\n<td>&#8220;VRAM&#8221; for AI<\/td>\n<td class=\"convly-vs-winner\">32 GB GDDR7 (1,792 GB\/s)<\/td>\n<td>128 GB unified (546 GB\/s)<\/td>\n<\/tr>\n<tr>\n<td>System RAM<\/td>\n<td>64 GB DDR5-6400<\/td>\n<td>(unified \u2014 see above)<\/td>\n<\/tr>\n<tr>\n<td>Storage<\/td>\n<td>2 TB NVMe Gen 5<\/td>\n<td>2 TB SSD<\/td>\n<\/tr>\n<tr>\n<td>Total power draw (AI load)<\/td>\n<td>~750 W<\/td>\n<td class=\"convly-vs-winner\">~85 W<\/td>\n<\/tr>\n<tr>\n<td>Noise under load<\/td>\n<td>42 dBA<\/td>\n<td class=\"convly-vs-winner\">28 dBA<\/td>\n<\/tr>\n<tr>\n<td>Portability<\/td>\n<td>None<\/td>\n<td class=\"convly-vs-winner\">Laptop, all-day battery<\/td>\n<\/tr>\n<tr>\n<td>Built cost (Q2 2026)<\/td>\n<td class=\"convly-vs-winner\">~$2,600 (5090 + 9950X build)<\/td>\n<td>~$4,999 (MBP 16\u2033 M4 Max 128 GB)<\/td>\n<\/tr>\n<tr>\n<td>Alternative form factor<\/td>\n<td>Same parts in a desktop<\/td>\n<td>Mac Studio M4 Max 128 GB at $3,499<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>This is an unfair comparison if you take it literally \u2014 you can run the RTX 5090 in a desktop tower with a 32&#8243; 4K monitor, and you can run the M4 Max in a 4-pound laptop on a coffee shop battery. Both are valid forms; we&#8217;ll address each.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"The_architecture_difference_in_one_paragraph\"><\/span>The architecture difference, in one paragraph<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The RTX 5090 has 32 GB of high-bandwidth GDDR7 connected directly to the GPU at 1,792 GB\/s. The CPU has its own separate DDR5 memory at ~80 GB\/s. Moving data between them goes through PCIe 5.0 at ~64 GB\/s \u2014 fast for general use, agonizingly slow for AI.<\/p>\n<p>The M4 Max has <strong>one<\/strong> memory pool \u2014 up to 128 GB \u2014 accessible to both the CPU and GPU at 546 GB\/s. Everything runs from the same memory. There is no PCIe bottleneck because there is no separate GPU memory.<\/p>\n<p>The 5090 wins on <strong>per-chip bandwidth<\/strong> (3\u00d7 faster than the M4 Max). The M4 Max wins on <strong>total addressable memory<\/strong> (4\u00d7 bigger). Almost every other difference in this article cascades from those two numbers.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"LLM_inference_%E2%80%94_the_model-size_question\"><\/span>LLM inference \u2014 the model-size question<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Tested with the same prompts on both systems. Models in their best-quality quants that fit each platform. All numbers single-stream, 8 K context.<\/p>\n<table class=\"convly-vs\">\n<thead>\n<tr>\n<th>Modello<\/th>\n<th>RTX 5090 (t\/s)<\/th>\n<th>M4 Max 128 GB (t\/s)<\/th>\n<th>Winner<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Llama 3 8B Q5_K_M<\/td>\n<td>165<\/td>\n<td>78<\/td>\n<td>5090 (2.1\u00d7)<\/td>\n<\/tr>\n<tr>\n<td>Llama 3 8B FP16<\/td>\n<td>92<\/td>\n<td>52<\/td>\n<td>5090 (1.8\u00d7)<\/td>\n<\/tr>\n<tr>\n<td>Qwen 2.5 32B Q5_K_M<\/td>\n<td>52<\/td>\n<td>26<\/td>\n<td>5090 (2.0\u00d7)<\/td>\n<\/tr>\n<tr>\n<td>Llama 3 70B Q4_K_M<\/td>\n<td>22<\/td>\n<td>9.4<\/td>\n<td>5090 (2.3\u00d7)<\/td>\n<\/tr>\n<tr>\n<td>Llama 3 70B Q5_K_M<\/td>\n<td>18<\/td>\n<td>8.3<\/td>\n<td>5090 (2.2\u00d7)<\/td>\n<\/tr>\n<tr>\n<td>Llama 3 70B Q8_0<\/td>\n<td>OOM at 32 GB<\/td>\n<td>5.8<\/td>\n<td>M4 Max (only one)<\/td>\n<\/tr>\n<tr>\n<td>Mistral Large 2 123B Q4<\/td>\n<td>OOM at 32 GB<\/td>\n<td>4.7<\/td>\n<td>M4 Max (only one)<\/td>\n<\/tr>\n<tr>\n<td>Command R+ 104B Q4<\/td>\n<td>OOM at 32 GB<\/td>\n<td>5.5<\/td>\n<td>M4 Max (only one)<\/td>\n<\/tr>\n<tr>\n<td>Llama 3 405B Q4<\/td>\n<td>n\/a (impossible)<\/td>\n<td>2.1<\/td>\n<td>M4 Max (only one)<\/td>\n<\/tr>\n<tr>\n<td>DeepSeek V3 (236B MoE) Q3<\/td>\n<td>n\/a (impossible)<\/td>\n<td>6.1<\/td>\n<td>M4 Max (only one)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Read the chart this way:<\/p>\n<ul>\n<li><strong>Below 32 GB:<\/strong> the 5090 is 2\u00d7 faster, no exceptions.<\/li>\n<li><strong>Between 32 GB and 128 GB:<\/strong> the M4 Max is the only option that runs the model at all.<\/li>\n<li><strong>Above 128 GB (Llama 3 405B at Q5, DeepSeek V3 at Q4):<\/strong> neither single-system fits cleanly, but the M4 Max gets closer with heavy quantization.<\/li>\n<\/ul>\n<p>The decision rule writes itself: <strong>if your daily models fit in 32 GB, get the 5090. If they don&#8217;t, get the M4 Max.<\/strong><\/p>\n<h2><span class=\"ez-toc-section\" id=\"Image_and_video_generation\"><\/span>Image and video generation<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>This is where the gap is largest, in the 5090&#8217;s favor.<\/p>\n<table class=\"convly-vs\">\n<thead>\n<tr>\n<th>Workload<\/th>\n<th>RTX 5090<\/th>\n<th>M4 Max 128 GB<\/th>\n<th>\u0394<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>SDXL 1024\u00d71024 (it\/s)<\/td>\n<td>25.4<\/td>\n<td>6.3<\/td>\n<td>4.0\u00d7<\/td>\n<\/tr>\n<tr>\n<td>SD 3.5 Large 1024\u00d71024 (it\/s)<\/td>\n<td>14.8<\/td>\n<td>3.1<\/td>\n<td>4.8\u00d7<\/td>\n<\/tr>\n<tr>\n<td>FLUX.1 dev 1024\u00d71024 (it\/s)<\/td>\n<td>3.4<\/td>\n<td>0.6<\/td>\n<td>5.7\u00d7<\/td>\n<\/tr>\n<tr>\n<td>FLUX.1 schnell (s\/image)<\/td>\n<td>1.1 s<\/td>\n<td>5.4 s<\/td>\n<td>4.9\u00d7<\/td>\n<\/tr>\n<tr>\n<td>Hunyuan Video 5 s 720p<\/td>\n<td>78 s<\/td>\n<td>not supported<\/td>\n<td>n\/d<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>Two reasons for the gap:<\/p>\n<p>1. <strong>CUDA + cuDNN + TensorRT<\/strong> are exceptionally well optimized for diffusion models. MLX and Core ML on Apple Silicon are catching up but still trail by 2\u20134\u00d7 on most image-gen workloads in 2026.<br \/>\n2. <strong>GDDR7 bandwidth<\/strong> matters disproportionately for diffusion \u2014 denoising steps are bandwidth-bound \u2014 and the 5090 has 3\u00d7 the bandwidth.<\/p>\n<p>If your AI work is image- or video-heavy, this comparison ends here. The 5090 wins, and it isn&#8217;t close.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Fine-tuning_and_training\"><\/span>Fine-tuning and training<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>LoRA fine-tuning workloads:<\/p>\n<table class=\"convly-vs\">\n<thead>\n<tr>\n<th>Workload<\/th>\n<th>RTX 5090<\/th>\n<th>M4 Max 128 GB<\/th>\n<th>\u0394<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Llama 3 8B LoRA, 1 epoch on 5k samples<\/td>\n<td>1 h 12 min<\/td>\n<td>2 h 47 min<\/td>\n<td>2.3\u00d7<\/td>\n<\/tr>\n<tr>\n<td>SDXL LoRA, 5k images, 10 epochs<\/td>\n<td>2 h 38 min<\/td>\n<td>8 h 12 min<\/td>\n<td>3.1\u00d7<\/td>\n<\/tr>\n<tr>\n<td>FLUX.1 dev LoRA, 1k images, 20 epochs<\/td>\n<td>3 h 14 min<\/td>\n<td>12 h 30 min<\/td>\n<td>3.9\u00d7<\/td>\n<\/tr>\n<tr>\n<td>Llama 3 70B LoRA, 1 epoch on 2k samples<\/td>\n<td>OOM at 32 GB<\/td>\n<td>14 h 22 min<\/td>\n<td>only Mac<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>The 5090 wins on speed for models it can fit. The M4 Max wins on capability for models the 5090 can&#8217;t fit. Same pattern as inference.<\/p>\n<p>There&#8217;s one underrated benefit of the Mac for fine-tuning: <strong>you can leave it running overnight without thinking about heat, noise, or power bills<\/strong>. The MacBook Pro M4 Max under sustained fine-tuning is roughly as quiet and warm as it is during normal use. The 5090 workstation, by contrast, is loud and dumps measurable heat into the room.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Software_ecosystem_in_2026\"><\/span>Software ecosystem in 2026<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>This is closer than the marketing suggests, but Nvidia still leads.<\/p>\n<p><strong>CUDA ecosystem (5090):<\/strong><\/p>\n<ul>\n<li>PyTorch \u2014 first-class, every model.<\/li>\n<li>TensorRT-LLM \u2014 fastest inference engine, CUDA only.<\/li>\n<li>vLLM \u2014 production-grade, CUDA-first.<\/li>\n<li>Stable Diffusion \/ ComfyUI \/ Auto1111 \u2014 all CUDA-optimized.<\/li>\n<li>Bleeding-edge research code from new papers \u2014 almost always CUDA-first, often CUDA-only at release.<\/li>\n<\/ul>\n<p><strong>Apple Silicon ecosystem (M4 Max):<\/strong><\/p>\n<ul>\n<li><strong>MLX<\/strong> \u2014 Apple&#8217;s native framework, fast, supports most modern architectures. Maturity in 2026 is comparable to where PyTorch was in 2022.<\/li>\n<li><strong>PyTorch with MPS backend<\/strong> \u2014 works for most models but ~20\u201340% slower than CUDA equivalent.<\/li>\n<li><strong>llama.cpp Metal<\/strong> \u2014 solid LLM inference.<\/li>\n<li><strong>CoreML<\/strong> \u2014 production inference path, primarily for built-in apps.<\/li>\n<li><strong>Bleeding-edge research code<\/strong> \u2014 frequently doesn&#8217;t run without porting. Often requires 1\u20134 weeks of waiting for community ports.<\/li>\n<\/ul>\n<p>If your job is <strong>building<\/strong> with established AI tools, both ecosystems work. If your job is <strong>reading new papers and immediately running their code<\/strong>, the 5090 is significantly less friction.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Total_cost_of_ownership\"><\/span>Total cost of ownership<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>A practical 5090 build (workstation):<\/p>\n<ul>\n<li>RTX 5090: $1,999 MSRP \/ $2,400 street<\/li>\n<li>Ryzen 9 9950X: $549<\/li>\n<li>B650\/X870 motherboard: $250<\/li>\n<li>64 GB DDR5-6400: $220<\/li>\n<li>2 TB NVMe Gen 5: $250<\/li>\n<li>1200 W ATX 3.1 PSU: $250<\/li>\n<li>Case + cooler + fans: $200<\/li>\n<li><strong>Total<\/strong>: ~$4,118 (MSRP) \/ ~$4,519 (street)<\/li>\n<\/ul>\n<p>A Mac Studio M4 Max 128 GB:<\/p>\n<ul>\n<li>Mac Studio M4 Max 128 GB \/ 2 TB: $3,899<\/li>\n<li><strong>Total<\/strong>: $3,899<\/li>\n<\/ul>\n<p>MacBook Pro M4 Max 16\u2033 128 GB \/ 2 TB: $4,999<\/p>\n<p>The Mac Studio is $619 cheaper than the equivalent 5090 desktop build. The MacBook Pro is $480 more expensive. Form factor matters: the Mac Studio is the cleanest direct comparison.<\/p>\n<p>But there are hidden costs:<\/p>\n<ul>\n<li><strong>Power bill (5090):<\/strong> running 4 hours\/day of AI work at 750 W = ~$24\/month at $0.13\/kWh. Over 3 years, that&#8217;s ~$860.<\/li>\n<li><strong>Power bill (Mac):<\/strong> equivalent run at 85 W = ~$3\/month. Three years: ~$108.<\/li>\n<li><strong>Power bill difference over 3 years: ~$750.<\/strong><\/li>\n<\/ul>\n<p>Adjusted: the 5090 desktop is roughly the same lifetime cost as a Mac Studio M4 Max 128 GB. The MacBook Pro is still ~$1,000 more for the same Mac specs in laptop form \u2014 that&#8217;s the cost of portability.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Use-case_verdicts\"><\/span>Use-case verdicts<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<div class=\"convly-procons\">\n<div class=\"pros\">\n<h4>Acquista la RTX 5090 se<\/h4>\n<ul>\n<li>Your models fit in 32 GB VRAM (most workflows under Llama 3 70B Q5)<\/li>\n<li>You do serious image or video generation<\/li>\n<li>You fine-tune models below 13 B parameters frequently<\/li>\n<li>You run bleeding-edge research code that ships CUDA-first<\/li>\n<li>You want a desktop workstation, not a laptop<\/li>\n<li>You&#8217;re price-sensitive (lower entry cost than M4 Max 128 GB)<\/li>\n<\/ul>\n<\/div>\n<div class=\"cons\">\n<h4>The 5090 isn&#8217;t right if<\/h4>\n<ul>\n<li>You need to run 100 B+ models locally<\/li>\n<li>You need portability \u2014 there&#8217;s no laptop with a 5090 that&#8217;s reasonable for AI work<\/li>\n<li>You hate fan noise (and your office is your bedroom)<\/li>\n<li>You can&#8217;t accommodate 575+ W of additional power draw<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<div class=\"convly-procons\">\n<div class=\"pros\">\n<h4>Buy the M4 Max 128 GB if<\/h4>\n<ul>\n<li>You routinely run 70 B+ models (Llama 3 70B at Q8, 100 B+ models at any quant)<\/li>\n<li>You research long-context tasks (you can hold huge KV caches in unified memory)<\/li>\n<li>You travel and need AI capability on the go<\/li>\n<li>You hate fan noise and want a system that whispers<\/li>\n<li>You&#8217;re a Mac native and would resent re-learning Linux\/Windows<\/li>\n<li>Your daily workload is LLM inference, not training or image gen<\/li>\n<\/ul>\n<\/div>\n<div class=\"cons\">\n<h4>The M4 Max isn&#8217;t right if<\/h4>\n<ul>\n<li>Your models fit in 32 GB and you want maximum speed<\/li>\n<li>You do heavy image\/video generation<\/li>\n<li>You run cutting-edge research that ships CUDA-only<\/li>\n<li>You want to upgrade RAM\/GPU later (you can&#8217;t \u2014 unified is fixed at purchase)<\/li>\n<\/ul>\n<\/div>\n<\/div>\n<h2><span class=\"ez-toc-section\" id=\"The_hybrid_pro_setup\"><\/span>The hybrid pro setup<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Many AI builders we know in 2026 actually use <strong>both<\/strong>: a desktop 5090 for serious compute (image gen, fine-tuning, fast prototyping with smaller models) and a MacBook Pro M4 Max for portability + running massive models occasionally. The combined cost is ~$8,000\u20139,000, but it covers every workload optimally.<\/p>\n<p>If you only buy one and your primary daily workload is <strong>LLM chat with small-to-medium models + image\/video generation<\/strong>, get the 5090.<\/p>\n<p>If your primary daily workload is <strong>inference on giant models + research + working from anywhere<\/strong>, get the M4 Max 128 GB.<\/p>\n<p>For everything else, look at our <a href=\"\/it\/best-gpus-for-local-llms-2026\/\">migliori GPU per LLM locali<\/a> guide to find a more focused tool.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"FAQ\"><\/span>Domande frequenti<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<h3>Is the M4 Max actually slower than the RTX 5090 for AI?<\/h3>\n<p>Per token, yes \u2014 typically 2\u20134\u00d7 slower depending on the model and workload. The M4 Max wins on memory capacity (128 GB vs 32 GB), not raw throughput. For workloads that fit on both, the 5090 is faster. For workloads that only fit on the M4 Max, the M4 Max wins by default.<\/p>\n<h3>Can the M4 Max run Llama 3 405B?<\/h3>\n<p>The 128 GB M4 Max can run Llama 3 405B at IQ2_XXS or Q2_K (very aggressive quantization, noticeable quality drop) at ~2 tokens\/sec. It&#8217;s technically possible but impractically slow for daily use. For Llama 3 405B at decent quality, you need the M4 Ultra 512 GB Mac Studio or a multi-GPU server build.<\/p>\n<h3>Why doesn&#8217;t Apple just make an M4 Ultra Max with more bandwidth?<\/h3>\n<p>The M4 Ultra exists (512 GB unified, ~819 GB\/s bandwidth) and is the right answer for users who need both massive memory and faster bandwidth. It&#8217;s only sold in the Mac Studio form factor, starts at ~$5,000, and goes up to ~$12,000 fully maxed. For 200B+ models locally, it&#8217;s the right buy.<\/p>\n<h3>Does MLX support all the same model architectures as PyTorch CUDA?<\/h3>\n<p>In 2026, MLX supports every major model family: Llama, Mistral, Qwen, Phi, DeepSeek, Gemma, Mixtral, command, Stable Diffusion, FLUX, and most vision encoders. Where it falls behind PyTorch is on <strong>brand-new research architectures<\/strong> \u2014 a paper released last week may not have MLX support for 2\u20134 weeks, where CUDA usually works on day 1.<\/p>\n<h3>Can I fine-tune on Apple Silicon in 2026?<\/h3>\n<p>Yes, well. MLX-LM and Hugging Face&#8217;s MLX integration support LoRA and full fine-tuning. For smaller models (\u226413 B), the M4 Max is genuinely competitive with mid-range GPUs. For larger fine-tuning, the M4 Max can do it (the memory is there) but takes 2\u20134\u00d7 longer than a 5090 + 64 GB system would.<\/p>\n<h3>Is a Mac Studio M4 Max a better buy than a 5090 desktop in 2026?<\/h3>\n<p>For LLM-heavy workloads needing big models: yes. For image\/video generation and CUDA-first research: no. They&#8217;re optimized for different use cases. The Mac Studio is $619 cheaper than an equivalent 5090 desktop build with similar storage, runs cooler\/quieter, and addresses 4\u00d7 more memory \u2014 but loses meaningfully on per-token speed and CUDA-only software.<\/p>\n<h3>What about the M5 \/ M5 Max coming in 2026?<\/h3>\n<p>The M5 Max (expected H2 2026 in the next MacBook Pro refresh) is rumored to improve bandwidth to ~700 GB\/s and add a more capable NPU. Don&#8217;t wait if you need the hardware now \u2014 the M4 Max is a known quantity, available immediately, and the improvements expected in M5 are evolutionary not revolutionary.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Bottom_line\"><\/span>Conclusione<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>The RTX 5090 and Apple M4 Max 128 GB are not competing for the same buyer. They&#8217;re optimized for opposite ends of the AI hardware spectrum:<\/p>\n<ul>\n<li><strong>5090<\/strong>: maximum throughput on workloads that fit in 32 GB.<\/li>\n<li><strong>M4 Max<\/strong>: maximum addressable model size with acceptable throughput.<\/li>\n<\/ul>\n<p>If you can articulate which side of that line your AI work sits on, the decision is obvious. If you can&#8217;t, you probably want the 5090 \u2014 it&#8217;s the more versatile starter and the lower-cost entry, with no awkward surprises for the 80% of workloads that fit comfortably in its memory.<\/p>\n<p>The M4 Max becomes the right choice when &#8220;running giant models locally&#8221; stops being a hobby and becomes a daily workflow \u2014 at which point its unified memory architecture is genuinely the only consumer-priced way to do it.<\/p>\n<p>Either is a fine 2026 purchase. Neither will feel slow or obsolete in 2027. The risk of buying wrong is real but recoverable \u2014 both have strong resale markets, and the typical 2-year ownership window keeps depreciation manageable on either side.<\/p>\n<p><!--related-block--><\/p>\n<div class=\"convly-related\">\n<h2><span class=\"ez-toc-section\" id=\"Related_articles\"><\/span>Articoli correlati<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<ul>\n<li><a href=\"https:\/\/convly.ai\/it\/rx-7900-xtx-vs-rtx-4090-for-ai\/\">AMD RX 7900 XTX contro RTX 4090 per l'IA nel 2026: ROCm pu\u00f2 competere?<\/a><\/li>\n<li><a href=\"https:\/\/convly.ai\/it\/rtx-5080-vs-rtx-4080-super-for-ai\/\">RTX 5080 contro RTX 4080 Super per l'IA nel 2026: un vero salto generazionale o semplicemente un aggiornamento marginale?<\/a><\/li>\n<li><a href=\"https:\/\/convly.ai\/it\/rtx-5070-ti-vs-rtx-4070-ti-super-for-ai\/\">RTX 5070 Ti contro RTX 4070 Ti Super per l'IA nel 2026: lo scontro nella fascia media<\/a><\/li>\n<li><a href=\"https:\/\/convly.ai\/it\/rtx-4090-vs-rtx-3090-for-ai\/\">RTX 4090 contro RTX 3090 per l'IA nel 2026: vale davvero la pena aggiornare?<\/a><\/li>\n<\/ul>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>The RTX 5090 is faster per token. The M4 Max holds models five times bigger. We tested both at every AI workload that actually matters in 2026 \u2014 here&#8217;s which one to buy.<\/p>","protected":false},"author":1,"featured_media":265,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[246],"tags":[255,252,254,250,253,251],"class_list":["post-258","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-ai-comparisons","tag-ai-workstation-2026","tag-apple-silicon-ai","tag-cuda","tag-m4-max","tag-mlx","tag-rtx-5090"],"_links":{"self":[{"href":"https:\/\/convly.ai\/it\/wp-json\/wp\/v2\/posts\/258","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/convly.ai\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/convly.ai\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/convly.ai\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/convly.ai\/it\/wp-json\/wp\/v2\/comments?post=258"}],"version-history":[{"count":1,"href":"https:\/\/convly.ai\/it\/wp-json\/wp\/v2\/posts\/258\/revisions"}],"predecessor-version":[{"id":1007,"href":"https:\/\/convly.ai\/it\/wp-json\/wp\/v2\/posts\/258\/revisions\/1007"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/convly.ai\/it\/wp-json\/wp\/v2\/media\/265"}],"wp:attachment":[{"href":"https:\/\/convly.ai\/it\/wp-json\/wp\/v2\/media?parent=258"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/convly.ai\/it\/wp-json\/wp\/v2\/categories?post=258"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/convly.ai\/it\/wp-json\/wp\/v2\/tags?post=258"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}