Hardware guide

Pick by your computer

Find your memory size. See which models fit. Then, if you must, go shopping. No tech skills needed.

Step one: find your memory

On a Mac

Open the Apple menu and pick About This Mac. Look for Memory. Macs with Apple chips share this memory with the graphics, which works well for AI.

On Windows

Open Settings, then System, then About. Look for Installed RAM. If you have a graphics card, check its VRAM in Task Manager under Performance, then GPU.

LM Studio says 16 GB of RAM is a good start. See their system needs.

Step two: pick your size

Each model needs room for its file plus some working space. We add it up with a simple formula. It is a rough guide, so leave some spare room. See the formula.

8 GB of memory

20 models fit. Here are the biggest ones that fit, since bigger usually means better answers.

16 GB of memory

28 models fit. Here are the biggest ones that fit, since bigger usually means better answers.

32 GB of memory

40 models fit. Here are the biggest ones that fit, since bigger usually means better answers.

64 GB of memory

41 models fit. Here are the biggest ones that fit, since bigger usually means better answers.

128 GB of memory

44 models fit. Here are the biggest ones that fit, since bigger usually means better answers.

Buying guide

Want a computer for local AI? Here are four rough price tiers. Prices are the maker's own starting price, about, as of Oct 2026. Upgrades cost extra, so check the final price before you buy. The model picks use our RAM estimates.

About $600 to $1,000

The starter

A base Mac mini with 16 GB, or an older PC with a new 16 GB graphics card added.

  • Mac mini (M5): 16 GB unified memory to start, up to 64 GB. From about $899, as of Oct 2026. Maker page, checked Oct 14, 2026.
  • GeForce RTX 5060 Ti: 16 GB or 8 GB of VRAM. From about $379 for the card, as of Oct 2026. Maker page, checked Oct 14, 2026.
  • GeForce RTX 5070: 12 GB of VRAM. From about $549 for the card, as of Oct 2026. Maker page, checked Oct 14, 2026.

Runs well: Mistral Nemo 12B, Gemma 3 12B, Gemma 4 12B, Qwen3.5 9B, Nemotron Nano 9B v2.

Runs the small and mid models well. Your first nerd party, but you get to leave early.

About $1,000 to $2,000

The laptop or gaming PC

A MacBook Air with 24 or 32 GB, or a gaming PC with a 16 GB NVIDIA card.

  • MacBook Air (M5): 16 GB unified memory to start, up to 32 GB. From about $1,299, as of Oct 2026. Maker page, checked Oct 14, 2026.
  • GeForce RTX 5070 Ti: 16 GB of VRAM. From about $749 for the card, as of Oct 2026. Maker page, checked Oct 14, 2026.
  • GeForce RTX 5080: 16 GB of VRAM. From about $999 for the card, as of Oct 2026. Maker page, checked Oct 14, 2026.

Runs well: Qwen3 14B, DeepSeek R1 Distill 14B, Phi-4, Mistral Nemo 12B, Gemma 3 12B.

The gaming PC was for homework. Sure it was.

About $2,000 to $3,000

The serious desk

A MacBook Pro or Mac Studio with 32 GB or more, or a PC with a 32 GB RTX 5090.

  • MacBook Pro (M5, M5 Pro, M5 Max): Up to 128 GB unified memory with M5 Max. From about $1,999, as of Oct 2026. Maker page, checked Oct 14, 2026.
  • Mac Studio (M5 Max, M5 Ultra): 36 GB unified memory to start, up to 512 GB with M5 Ultra. From about $2,499, as of Oct 2026. Maker page, checked Oct 14, 2026.
  • GeForce RTX 5090: 32 GB of VRAM. From about $1,999 for the card, as of Oct 2026. Maker page, checked Oct 14, 2026.

Runs well: Qwen3 32B, Olmo 3.1 32B, OLMo 2 32B, Granite 4.0 H Small, Qwen3 30B-A3B 2507.

This is where the 27B to 32B models stop being slow and start being fun.

Over about $2,500 (exact prices not yet checked)

The big boxes

A mini PC with AMD Ryzen AI Max+ and 128 GB, NVIDIA DGX Spark with 128 GB, or a Mac Studio set up with 128 GB or more.

  • Mini PCs with AMD Ryzen AI Max+ 395: Up to 128 GB of memory, shared with the Radeon 8060S graphics. Price not yet checked. Maker page, checked Oct 14, 2026.
  • NVIDIA DGX Spark: 128 GB of unified memory (a 64 GB option is also listed). Price not yet checked. Maker page, checked Oct 14, 2026.
  • Mac Studio (M5 Max, M5 Ultra): 36 GB unified memory to start, up to 512 GB with M5 Ultra. From about $2,499, as of Oct 2026. Maker page, checked Oct 14, 2026.

Runs well: GPT-OSS 120B, GLM-4.5 Air, Llama 4 Scout, Llama 3.3 70B, Qwen3 32B.

Big enough for the 120B models. The nerd club will want to borrow it.

Graphics card prices are for the card only, not a whole PC. On a PC, the model needs to fit in the card's VRAM to run fast. On a Mac or a Ryzen AI Max mini PC, the memory is shared, so the full memory number counts.

Can my kid's gaming PC do this?

Maybe! Here is a two-minute check. No nerd club card needed.

  1. On Windows, right-click the taskbar and open Task Manager.
  2. Click Performance, then GPU. The name at the top is the graphics card.
  3. Look for Dedicated GPU memory. That is the VRAM.
  4. 8 GB of VRAM runs small models. 12 to 16 GB runs the good everyday ones. 24 GB or more runs the strong ones.

On a Mac, open the Apple menu and pick About This Mac. The Memory line is your number.

Common questions

How much RAM do I need to run local AI?

About 8 GB runs small models. 16 GB runs good everyday models. 32 GB or more runs strong ones.

Is a Mac good for local AI?

Yes. Macs with Apple chips share memory with the graphics, so a 32 GB Mac can run models a 32 GB PC without a big graphics card would find slow.