AMD Radeon HD 7990 VS AMD Radeon RX 7900 XT
amd
Brand3GB GDDR5
Memory2048
Cores288 GB/s
BandwidthRadeon HD 7990
amd
Brand20GB GDDR6
Memory5376
Cores800 GB/s
BandwidthRadeon RX 7900 XT
AMD Radeon HD 7990
Radeon HD 7990
$999 • Apr 2013
Radeon RX 7900 XT
$899 • Nov 2022
AMD Radeon RX 7900 XT
Specs Comparison
| Specification | AMD Radeon HD 7990 | AMD Radeon RX 7900 XT |
|---|---|---|
| Memory Size | 3 GB | 20 GB |
| Memory Type | GDDR5 | GDDR6 |
| TDP | 375 W | 300 W |
| Core Clock | N/A | N/A |
| Boost Clock | 1000 MHz | 2394 MHz |
| Memory Bandwidth | 288 GB/s | 800 GB/s |
| Process Size | 28nm | 5nm |
| Architecture | GCN 1.0 | RDNA 3.0 |
| Shading Units | 2048 | 5376 |
| RT Cores | N/A | 84 |
| TMUs | 128 | 336 |
| ROPs | 32 | 192 |
| Memory Bus | 384-bit | 320-bit |
| Memory Clock | 1500 MHz | 2500 MHz |
| Pixel Rate | 32 GPixel/s | 459.6 GPixel/s |
| Texture Rate | 288 GTexel/s | 800 GTexel/s |
| FP32 Performance | 4.096 GFLOPS | 51.48 GFLOPS |
| L2 Cache | 0.75 MB | 6.00 MB |
| Die Size | 365 mm² | 529 mm² |
| Transistors | 4313 Million | 57700 Million |
| Required PSU | 750 W | 700 W |
| Power Connectors | 2x 8-pin | 2x 8-pin |
| Bus Interface | PCIe 3.0 x16 | PCIe 4.0 x16 |
| DirectX | 11.1 | 12.2 |
| Vulkan | N/A | 1.3 |
| OpenGL | 4.6 | 4.6 |
| Foundry | TSMC | TSMC |
Comparison in Synthetic Benchmarks
3DMark Time Spy
Synthetic DirectX 12 benchmark that measures GPU performance in gaming workloads
Graphics Score
AMD Radeon HD 7990
AMD Radeon RX 7900 XT
Geekbench 6
Cross-platform benchmark that measures GPU compute performance using OpenCL and Metal APIs
OpenCL Score
AMD Radeon HD 7990
AMD Radeon RX 7900 XT
GFXBench 5.0
Cross-platform 3D graphics benchmark suite that measures GPU performance across different APIs
Aztec Ruins High (FPS)
AMD Radeon HD 7990
AMD Radeon RX 7900 XT
PassMark G2D
Comprehensive 2D graphics benchmark that measures GPU performance in various graphics operations
G2D Mark
AMD Radeon HD 7990
AMD Radeon RX 7900 XT
Game Benchmarks Comparison
No game benchmarks available for this combination of GPUs yet.
We're working on collecting performance data for this combination of GPUs. Please check back later.
AMD Radeon RX 7900 XT Wins!
Based on 4 synthetic benchmarks
AMD Radeon HD 7990
AMD • 3GB GDDR5
AMD Radeon RX 7900 XT
AMD • 20GB GDDR6
Where to Buy
Compare with Similar GPUs
Comments & Discussion
Share your thoughts and experiences