AMD Radeon RX 7900 XT vs NVIDIA GeForce RTX 4080
Side-by-side comparison of specifications, performance, and efficiency.
AMD Radeon RX 7900 XT
Architecture
RDNA 3
Year
2022
VRAM
20 GB
TDP
315 W
NVIDIA GeForce RTX 4080
Architecture
Ada Lovelace
Year
2022
VRAM
16 GB
TDP
320 W
Specifications
AMD Radeon RX 7900 XT NVIDIA GeForce RTX 4080
Architecture
RDNA 3 Ada Lovelace
Launch Year
2022 2022
Form Factor
PCIe PCIe
VRAM
20 GB16 GB
Memory Bandwidth
800 GB/s717 GB/s
TDP
315 W320 W
Process Node
5nm 4nm
| Spec | AMD Radeon RX 7900 XT | NVIDIA GeForce RTX 4080 |
|---|---|---|
| Architecture | RDNA 3 | Ada Lovelace |
| Launch Year | 2022 | 2022 |
| Form Factor | PCIe | PCIe |
| VRAM | 20 GB | 16 GB |
| Memory Bandwidth | 800 GB/s | 717 GB/s |
| TDP | 315 W | 320 W |
| Process Node | 5nm | 4nm |
Performance (TFLOPS)
AMD Radeon RX 7900 XT NVIDIA GeForce RTX 4080
FP64
1.3 TFlops0.7 TFlops
FP32
51.6 TFlops48.7 TFlops
FP16
103.2 TFlops97.5 TFlops
BF16
—97.5 TFlops
FP8
—195.0 TFlops
INT8
103.2 TFlops195.0 TFlops
| Precision | AMD Radeon RX 7900 XT | NVIDIA GeForce RTX 4080 |
|---|---|---|
| FP64 | 1.3 TFlops | 0.7 TFlops |
| FP32 | 51.6 TFlops | 48.7 TFlops |
| FP16 | 103.2 TFlops | 97.5 TFlops |
| BF16 | — | 97.5 TFlops |
| FP8 | — | 195.0 TFlops |
| INT8 | 103.2 TFlops | 195.0 TFlops |
FLOPS by Precision
Efficiency — TDP vs FP32 Performance
Analysis
Most Efficient
AMD
Radeon RX 7900 XT
0.16 TFLOPS/W
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