microsoft/Phi-3-medium-4k-instruct
14B params · est. 8.4 GB Q4
NVIDIA DGX Spark (Project DIGITS, 128GB): likely fitApple M3 Ultra (80c GPU, 512GB): likely fit
Head-to-head
NVIDIA DGX Spark (Project DIGITS, 128GB) vs Apple M3 Ultra (80c GPU, 512GB)
Compare recorded specifications and inspect source links for both devices. Speed comparisons appear only when workload, runtime version, quantization, context and batch match.
Device profile
NVIDIA DGX Spark (Project DIGITS, 128GB)
Compared here against Apple M3 Ultra (80c GPU, 512GB).
Curated Aggregate·2026-05-25128GB / $3.0k
Speed evidence
Matched rows below
VRAM
128 GB
TDP
240 W
Rating
Not scored
Device profile
Apple M3 Ultra (80c GPU, 512GB)
Compared here against NVIDIA DGX Spark (Project DIGITS, 128GB).
Curated Aggregate·2026-02-08512GB / $10.0k
Speed evidence
Matched rows below
VRAM
512 GB
TDP
100 W
Rating
Not scored
Quick verdict
Speed comparisons require matching runtime settings. A missing score means insufficient comparative evidence.
Apple M3 Ultra (80c GPU, 512GB) wins VRAM capacity.
Apple M3 Ultra (80c GPU, 512GB) has the lower published power rating.
| Metric | NVIDIA DGX Spark (Project DIGITS, 128GB) | Apple M3 Ultra (80c GPU, 512GB) |
|---|---|---|
| MyAI rating | Not scored | Not scored |
| Speed comparison | See matched rows below | See matched rows below |
| VRAM | 128 GB | 512 GB |
| TDP | 240 W | 100 W |
| MSRP | $3.0k | $10.0k |
| Workloads | 8 | 10 |
Shared benchmark rows
No batch-one rows with matching model, quantization, context, runtime and offload notes are available. We cannot calculate a comparable speed difference.
External quality layer
Best open models likely to fit this class
This shortlist cross-references the external OpenEvals snapshot with an approximate Q4-class VRAM estimate. Use it to sanity-check whether the hardware you are comparing can host strong open models, not just benchmark toy workloads.
91.0
Qwen/Qwen2-72B
73B params · est. 43.6 GB Q4
NVIDIA DGX Spark (Project DIGITS, 128GB): likely fitApple M3 Ultra (80c GPU, 512GB): likely fit
microsoft/Phi-3.5-mini-instruct
3.8B params · est. 2.3 GB Q4
NVIDIA DGX Spark (Project DIGITS, 128GB): likely fitApple M3 Ultra (80c GPU, 512GB): likely fit
internlm/internlm2_5-7b-chat
7.7B params · est. 4.6 GB Q4
NVIDIA DGX Spark (Project DIGITS, 128GB): likely fitApple M3 Ultra (80c GPU, 512GB): likely fit