AMD MI300X vs P4: Specs, VRAM & Price
Short answer: choose the AMD MI300X when 192 GB of VRAM is the gating requirement. Choose the P4 when 8 GB is enough for the workload and the lower hourly rate points that way.
The AMD MI300X has 192 GB of VRAM; the P4 has 8 GB.
You can rent both by the hour, no purchase required. AMD MI300X from $2.63/GPU/hr; P4 from $0.069/GPU/hr. The P4 is 97% cheaper at the entry rate.
AMD MI300X
Good for training and serving frontier-scale LLMs
P4
Good for inference workloads on older-generation hardware
Last updated: 2026-10-10 22:01:06 UTCRefreshes hourly
Specs side by side
| Spec | AMD MI300X | P4 |
|---|---|---|
| VRAM | 192 GB | 8 GB |
| Memory bandwidth | 5.3 TB/s | – |
| Architecture | CDNA3 | Pascal |
| Compute capability | n/a | 6.1 |
| Precisions in hardware | FP32, FP16, BF16, FP8, INT4 | FP32, FP16 |
| Peak FP16/BF16 tensor TFLOPS | 1,307.4 TFLOPS | – |
| Peak FP8 tensor TFLOPS | 2,614.9 TFLOPS | – |
| NVLink / multi-GPU interconnect | Infinity Fabric | – |
| Max board power (TDP) | 750W | – |
| Form factor | – | PCIe |
| Regions | 2 | 1 |
On-demand price
| Rate | AMD MI300X | P4 |
|---|---|---|
| Lowest per GPU/hr | $2.63/GPU/hr | $0.069/GPU/hr (cheapest overall) |
Which is better for AI: AMD MI300X or P4?
Choose the AMD MI300X when 192 GB of VRAM is the gating requirement. Choose the P4 when 8 GB is enough for the workload and the lower hourly rate points that way.
AMD MI300X vs P4: common questions
Is the AMD MI300X or the P4 better for AI?
Short answer: choose the AMD MI300X when 192 GB of VRAM is the gating requirement. Choose the P4 when 8 GB is enough for the workload and the lower hourly rate points that way.
Is the AMD MI300X or the P4 cheaper to rent?
On Aquanode's live marketplace the AMD MI300X starts at $2.63/GPU/hr (median $2.63/GPU/hr) and the P4 starts at $0.069/GPU/hr (median $0.069/GPU/hr). The P4 is the cheaper of the two at the entry rate, by 97%.
What is the difference between the AMD MI300X and the P4?
The AMD MI300X has 192 GB of VRAM against the P4's 8 GB; the AMD MI300X is a CDNA3 part and the P4 is Pascal; only the AMD MI300X supports BF16, FP8, INT4 compute. On price, the AMD MI300X lists from $2.63/GPU/hr and the P4 from $0.069/GPU/hr.
How widely available are the AMD MI300X and the P4?
The AMD MI300X is listed in 2 regions and the P4 in 1 region right now.
How much does 1,000 GPU-hours cost on the AMD MI300X vs the P4?
At the lowest rates listed today, 1,000 GPU-hours costs $2,629 on the AMD MI300X and $69 on the P4, a difference of $2,560 for the same runtime. Rates are per GPU per hour and update hourly.
How much VRAM does the AMD MI300X have compared to the P4?
The AMD MI300X has 192 GB of VRAM; the P4 has 8 GB.
How this comparison is calculated
Every price is normalized to a per-GPU hourly rate using the same pipeline as every other pricing surface on Aquanode, and only the cheapest qualifying offer per provider is shown. A dash means that provider does not currently list that GPU.
Architecture, compute capability and supported precisions come from each vendor's published datasheet for that generation, not from the marketplace feed. This page regenerates at most once per hour.
Memory bandwidth, tensor TFLOPS, NVLink/interconnect and max board power are the same verified-from-datasheet figures shown on each model's own AMD MI300X page and P4 page, which link the primary vendor source for that model. A dash here means Aquanode hasn't verified that figure from a primary source yet, never a guess.
Go further
Check what fits in each card's memory with the AMD MI300X VRAM calculator and the P4 VRAM calculator, see vendor-published throughput in the GPU benchmarks and specs table, or browse every model by generation in the GPU index.
More AMD MI300X comparisons
More P4 comparisons
Related reading: AMD MI300X pricing and specs, ROCm vs CUDA, AMD vs NVIDIA GPUs for AI, AMD MI355X guide, and The best GPUs for AI, ranked.
