DGX Spark, GB10 Grace Blackwell, 128GB vs Mac Studio, M5 Max, 128GB
Neither box holds Llama-3.3-70B at BF16. The largest quant that fits is Q8_0, on DGX Spark, GB10 Grace Blackwell, 128GB.
- Fit
- Won't fit
- Won't fit
- Headroom
- −24GB
- −24GB
- Est. speed
- —
- —
- Cheapest today
- $4,699 at NVIDIA
- $5,099 at Apple
- Per GB of memory
- $37
- $40
- Memory
- 128GB unified LPDDR5X memory
- 128GB unified memory
- Usable for a model
- 120GB
- 120GB
- Memory bandwidth
- 273GB/s
- 614GB/s
- Storage
- 4TB
- 512GB
- Lowest recorded
- $4,699 in 2d
- $5,099 in 2d
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-3.3-70BWon't fitWon't fit
- gpt-oss-120bWon't fitWon't fit
- Mistral-Large-2411Won't fitWon't fit
- Llama-4-Scout-17B-16EWon't fitWon't fit
- Qwen3-32BFitsFits
- Gemma-3-27BFitsFits
- gpt-oss-20bFitsFits
- Llama-4-Maverick-17B-128EWon't fitWon't fit
- Llama-4-BehemothWon't fitWon't fit
Every model we track at BF16. The rows where the two boxes agree are dimmed, because they are not what you are choosing between.