Mac Studio, M5 Max, 128GB vs Ascent GX10, GB10 Grace Blackwell, 128GB
Neither box holds Qwen3-235B-A22B at Q5_K_M. The largest quant that fits is Q3_K_M, on Mac Studio, M5 Max, 128GB.
- Fit
- Won't fit
- Won't fit
- Headroom
- −49GB
- −49GB
- Est. speed
- —
- —
- Cheapest today
- $5,099 at Apple
- $3,999.99 at Best Buy
- Per GB of memory
- $40
- $31
- Memory
- 128GB unified memory
- 128GB unified LPDDR5X memory
- Usable for a model
- 120GB
- 120GB
- Memory bandwidth
- 614GB/s
- 273GB/s
- Storage
- 512GB
- 1TB
- Lowest recorded
- $5,099 in 33d
- $3,999.99 in 33d
Fit, headroom and speed are computed from each vendor’s published bandwidth and the model’s own size at 8K context. Prices are the cheapest listing we could read on each seller’s page. The arithmetic is here.
Where they actually differ
- Qwen3-235B-A22BWon't fitWon't fit
- DeepSeek-V3Won't fitWon't fit
- Llama-3.3-70BFitsFits
- gpt-oss-120bFitsFits
- Mistral-Large-2411FitsFits
- Llama-4-Scout-17B-16EFitsFits
- Qwen3-32BFitsFits
- Gemma-3-27BFitsFits
- gpt-oss-20bFitsFits
- Llama-4-Maverick-17B-128EWon't fitWon't fit
- Llama-4-BehemothWon't fitWon't fit
- Qwen3-Coder-480B-A35B-InstructWon't fitWon't fit
- Kimi-K2-InstructWon't fitWon't fit
- GLM-4.6Won't fitWon't fit
- DeepSeek-R1Won't fitWon't fit
- MiniMax-M2Won't fitWon't fit
- Qwen3-30B-A3BFitsFits
- Qwen3-4BFitsFits
- Devstral-Small-2507FitsFits
- Phi-4FitsFits
- Gemma-3n-E4BFitsFits
- Qwen3-VL-8B-InstructFitsFits
Every model we track at Q5_K_M. The rows where the two boxes agree are dimmed, because they are not what you are choosing between.