AMD Radeon RX 7900 XTX vs NVIDIA GeForce RTX 4090
Side-by-side comparison of specifications, performance, and efficiency.
AMD Radeon RX 7900 XTX
Architecture
RDNA 3
Year
2022
VRAM
24 GB
TDP
355 W
NVIDIA GeForce RTX 4090
Architecture
Ada Lovelace
Year
2022
VRAM
24 GB
TDP
450 W
Specifications
AMD Radeon RX 7900 XTX NVIDIA GeForce RTX 4090
Architecture
RDNA 3 Ada Lovelace
Launch Year
2022 2022
Form Factor
PCIe PCIe
VRAM
24 GB24 GB
Memory Bandwidth
960 GB/s1.0 TB/s
TDP
355 W450 W
Process Node
5nm 4nm
| Spec | AMD Radeon RX 7900 XTX | NVIDIA GeForce RTX 4090 |
|---|---|---|
| Architecture | RDNA 3 | Ada Lovelace |
| Launch Year | 2022 | 2022 |
| Form Factor | PCIe | PCIe |
| VRAM | 24 GB | 24 GB |
| Memory Bandwidth | 960 GB/s | 1.0 TB/s |
| TDP | 355 W | 450 W |
| Process Node | 5nm | 4nm |
Performance (TFLOPS)
AMD Radeon RX 7900 XTX NVIDIA GeForce RTX 4090
FP64
1.5 TFlops1.3 TFlops
FP32
61.4 TFlops82.6 TFlops
FP16
122.8 TFlops165.2 TFlops
BF16
—165.2 TFlops
FP8
—330.3 TFlops
INT8
122.8 TFlops330.3 TFlops
| Precision | AMD Radeon RX 7900 XTX | NVIDIA GeForce RTX 4090 |
|---|---|---|
| FP64 | 1.5 TFlops | 1.3 TFlops |
| FP32 | 61.4 TFlops | 82.6 TFlops |
| FP16 | 122.8 TFlops | 165.2 TFlops |
| BF16 | — | 165.2 TFlops |
| FP8 | — | 330.3 TFlops |
| INT8 | 122.8 TFlops | 330.3 TFlops |
FLOPS by Precision
Efficiency — TDP vs FP32 Performance
Analysis
Most Efficient
NVIDIA
GeForce RTX 4090
0.18 TFLOPS/W
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