AMD Instinct MI355X vs NVIDIA RTX A4000 — GPU Comparison (Jul 2026)
AMD Instinct MI355X (288GB HBM3e, 1,800 TFLOPS FP16, CDNA 4) vs NVIDIA RTX A4000 (16GB GDDR6, 19.2 TFLOPS FP16, Ampere). Cloud pricing: AMD Instinct MI355X from $2.59/hr. Compare specs, VRAM, performance, and pricing across 1 cloud providers to find the best GPU for your AI workload.
Bottom Line: AMD Instinct MI355X vs NVIDIA RTX A4000
AMD Instinct MI355X comes out ahead overall, leading in 5 of 6 compared categories.
Where AMD Instinct MI355X leads
- FP16 (1,800 TFLOPS vs 19.2 TFLOPS)
- VRAM (288 GB vs 16 GB)
- Memory Bandwidth (8,000 GB/s vs 448 GB/s)
- FP32 (72 TFLOPS vs 16 TFLOPS)
- Release Year (2025 vs 2021)
Where NVIDIA RTX A4000 leads
- TDP (140W vs 1400W)
Choose AMD Instinct MI355X for Frontier AI training, highest-end AMD workloads. Choose NVIDIA RTX A4000 for Entry workstation, rendering.
Frequently Asked Questions
Is AMD Instinct MI355X or NVIDIA RTX A4000 better?
AMD Instinct MI355X leads in 5 of 6 compared categories. The right choice still depends on the factors that matter most to you.
Which has a better FP16, AMD Instinct MI355X or NVIDIA RTX A4000?
AMD Instinct MI355X (1,800 TFLOPS vs 19.2 TFLOPS).
Which has a better VRAM, AMD Instinct MI355X or NVIDIA RTX A4000?
AMD Instinct MI355X (288 GB vs 16 GB).
|
AMD Instinct MI355X
288GB HBM3e · CDNA 4
|
NVIDIA RTX A4000
16GB GDDR6 · Ampere
|
||
|---|---|---|---|
| Specifications | |||
| Manufacturer | AMD | NVIDIA | |
| Architecture | CDNA 4 | Ampere | |
| VRAM | 288 GB HBM3e | 16 GB GDDR6 | |
| Memory Bandwidth | 8,000 GB/s | 448 GB/s | |
| FP16 (Tensor) | 1800.0 TFLOPS | 19.2 TFLOPS | |
| FP32 | 72.0 TFLOPS | 16.0 TFLOPS | |
| TDP | 1400W | 140W | |
| Release Year | 2025 | 2021 | |
| Segment | Data center | Professional | |
| Best For | Frontier AI training highest-end AMD workloads | Entry workstation rendering | |
| Cloud Pricing | |||
| Cheapest On-Demand | $2.59/hr | — | |
| Cheapest Spot | — | — | |
| Providers | 1 | 0 | |
| Provider Pricing (On-Demand) | |||
|
$2.59/hr | N/A | |
AMD Instinct MI355X
NVIDIA RTX A4000