Product Compare
AMD Radeon HD 7970 vs AMD Radeon HD 7790
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Jan 2012 | Mar 2013 |
| Generation | Southern Islands | Southern Islands |
| Type | Desktop | Desktop |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Clock Speeds | ||
| Memory Clock | 1375 MHz | 1500 MHz |
| Memory | ||
| Memory Size | 3GB | 1024MB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 384bit | 128bit |
| Bandwidth | 264.0GB/s | 96.00GB/s |
| Render Config | ||
| Compute Units | 32 | 14 |
| Shading Units | 2048 | 896 |
| TMUs | 128 | 56 |
| ROPs | 32 | 16 |
| L1 Cache | 16 KB (per CU) | 16 KB (per CU) |
| L2 Cache | 768 KB | 256 KB |
| Theoretical Performance | ||
| Pixel Rate | 29.60 GPixel/s | 16.00 GPixel/s |
| Texture Rate | 118.4 GTexel/s | 56.00 GTexel/s |
| FP32 (float) | 3.789 TFLOPS | 1.792 TFLOPS |
| FP64 (double) | 947.2 GFLOPS | 112.0 GFLOPS |
| Graphics Processor | ||
| GPU Name | Tahiti | Bonaire |
| GPU Variant | Tahiti XT(215-0821060) | Bonaire XT(215-0839039) |
| Architecture | GCN 1.0 | GCN 2.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| Transistors | 4.313 billion | 2.08 billion |
| Die Size | 352 mm² | 160 mm² |
| Board Design | ||
| TDP | 250W | 85W |
| Suggested PSU | 600 W | 250 W |
| Outputs | 1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 | 1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 |
| Power Connectors | 1x 6-pin + 1x 8-pin | 1x 6-pin |
| Graphics Features | ||
| DirectX | 12 (11_1) | 12 (12_0) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 2.1 (1.2) | 2.0 |
| Vulkan | 1.2.170 | 1.2 |
| Shader Model | 6.5 (5.1) | 6.3 |
| Benchmarks | ||
| 3DMark Time Spy | 2310 | 1307 |
| 3DMark Time Spy Extreme | 1209 | 409 |