Side-by-side GPU comparison: specs, memory, compute performance, and live cloud pricing.
Verdict
M4 (24 GB) has 2 GB more VRAM, making it better suited for large models and long context windows. For compute-bound workloads like training, RTX A4000 delivers 4.6× higher FP16 throughput. M4 (24 GB) supports a broader range of models (510 vs 502 from this catalog), giving more flexibility.
Specifications
| M4 (24 GB) | RTX A4000 | |
|---|---|---|
| VRAM | 18 GB | 16 GB |
| VRAM Type | LPDDR5X | GDDR6 |
| Memory Bandwidth | 0.1 TB/s | 0.4 TB/s |
| FP16 Performance | 8 TFLOPS | 39 TFLOPS |
| Manufacturer | Apple | NVIDIA |
| FP8 Support | No | No |
| FP4 Support | No | No |
Price / Performance
Based on cheapest single-GPU on-demand pricing. Lower $/TFLOP = better compute value; lower $/GB = better memory value.
| M4 (24 GB) | RTX A4000 | |
|---|---|---|
| $/hr (cheapest) | — | $0.25 |
| $/TFLOP (compute value) | — | $0.0065 |
| $/GB VRAM (memory value) | — | $0.0156 |
Cloud Pricing
Cheapest on-demand price per provider (single GPU).
Model Compatibility
Models from the catalog that fit on each GPU, grouped by required precision.
M4 (24 GB) (510 models)
RTX A4000 (502 models)
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Pricing data refreshed hourly · Last updated April 11, 2026 · Browse all comparisons