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Mac Studio M2 Ultra 192GB vs RX 9070 16GB for Local LLMs

The Mac Studio M2 Ultra 192GB has about 25% more memory bandwidth (800 vs 640 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 25% faster on the Mac Studio M2 Ultra 192GB. The Mac Studio M2 Ultra 192GB fits more of the catalog at Q4/8K — 50 vs 25 of 61 models (192 vs 16 GB VRAM). Largest model that fits the Mac Studio M2 Ultra 192GB but not the RX 9070 16GB: Qwen3-235B-A22B (235.1B). MSRP is $6,999 for the Mac Studio M2 Ultra 192GB vs $549 for the RX 9070 16GB. MSRP is a launch list price, not live retail — Amazon prices move; click through for the current price. In the Q4/8K head-to-head below (44 shared models), the Mac Studio M2 Ultra 192GB posts the higher tok/s in 33 rows vs 11. Methodology.

Spec comparison

Mac Studio M2 Ultra 192GBRX 9070 16GB
VendorAppleAMD
VRAM192 GB16 GB
Memory typeLPDDR5GDDR6
Memory bandwidth800 GB/s640 GB/s
TDP370 W220 W
MSRP (list)$6,999$549
BuySearch Amazon (affiliate)Search Amazon (affiliate)

MSRP is the launch list price, not live retail. Buy links are Amazon affiliate links — the price after you click is the live price.

Q4 / 8K head-to-head — top 15 of 44 shared models

ModelParams (B)Mac Studio M2 Ultra 192GB tok/sMac Studio M2 Ultra 192GB fitsRX 9070 16GB tok/sRX 9070 16GB fitsWinner
Qwen3-0.6B0.8636.4 est.Yes509.1 est.YesMac Studio M2 Ultra 192GB
gemma-3-1b-it1.0509.1 est.Yes407.3 est.YesMac Studio M2 Ultra 192GB
Llama-3.2-1B-Instruct1.2424.2 est.Yes339.4 est.YesMac Studio M2 Ultra 192GB
Qwen3-30B-A3B30.5169.7 est.Yes293.9 est.NoRX 9070 16GB
Qwen3-Coder-30B-A3B-Instruct30.5169.7 est.Yes293.9 est.NoRX 9070 16GB
Qwen3-30B-A3B-Instruct-250730.5169.7 est.Yes293.9 est.NoRX 9070 16GB
GLM-4.7-Flash31.2169.7 est.Yes282.1 est.NoRX 9070 16GB
Qwen3-1.7B2.0254.5 est.Yes203.6 est.YesMac Studio M2 Ultra 192GB
Qwen3-Next-80B-A3B-Instruct81.3169.7 est.Yes46.3 est.NoMac Studio M2 Ultra 192GB
Qwen3-Coder-Next79.7169.7 est.Yes48.1 est.NoMac Studio M2 Ultra 192GB
Llama-3.2-3B-Instruct3.2159.1 est.Yes127.3 est.YesMac Studio M2 Ultra 192GB
Phi-4-mini-instruct3.8134.0 est.Yes107.2 est.YesMac Studio M2 Ultra 192GB
Phi-4-mini-reasoning3.8134.0 est.Yes107.2 est.YesMac Studio M2 Ultra 192GB
gemma-3-4b-it4.3130.5 est.Yes104.4 est.YesMac Studio M2 Ultra 192GB
Qwen3-4B-Instruct-25074.0127.3 est.Yes101.8 est.YesMac Studio M2 Ultra 192GB

est. = bandwidth-based estimate; measured = curated real benchmark that overrides the estimate. Fits = weights + KV(8K) + 1 GB overhead ≤ 95% of VRAM.

Fit coverage at Q4 / 8K

Mac Studio M2 Ultra 192GBRX 9070 16GB
Catalog models that fit50 of 6125 of 61
Largest exclusive fitQwen3-235B-A22B (235.1B)—

Mac Studio M2 Ultra 192GB details → · RX 9070 16GB details →