Product Compare
AMD Radeon HD 7870 XT vs AMD Radeon HD 7970M
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Nov 2012 | Apr 2012 |
| Generation | Southern Islands | London |
| Type | Desktop | Mobile |
| Bus Interface | PCIe 3.0 x16 | MXM-B (3.0) |
| Clock Speeds | ||
| Base Clock | 925 MHz | |
| Boost Clock | 975 MHz | |
| Memory Clock | 1500 MHz | 1200 MHz |
| Memory | ||
| Memory Size | 2GB | 2GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256bit | 256bit |
| Bandwidth | 192.0GB/s | 153.6GB/s |
| Render Config | ||
| Compute Units | 24 | 20 |
| Shading Units | 1536 | 1280 |
| TMUs | 96 | 80 |
| ROPs | 32 | 32 |
| L1 Cache | 16 KB (per CU) | 16 KB (per CU) |
| L2 Cache | 512 KB | 512 KB |
| Theoretical Performance | ||
| Pixel Rate | 31.20 GPixel/s | 27.20 GPixel/s |
| Texture Rate | 93.60 GTexel/s | 68.00 GTexel/s |
| FP32 (float) | 2.995 TFLOPS | 2.176 TFLOPS |
| FP64 (double) | 748.8 GFLOPS | 136.0 GFLOPS |
| Graphics Processor | ||
| GPU Name | Tahiti | Wimbledon |
| GPU Variant | Tahiti LE(215-0821122) | Wimbledon XT(216-0836036) |
| Architecture | GCN 1.0 | GCN 1.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| Transistors | 4.313 billion | 2.8 billion |
| Die Size | 352 mm² | 212 mm² |
| Board Design | ||
| TDP | 185W | 100W |
| Suggested PSU | 450 W | |
| Outputs | 1x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 | No outputs |
| Power Connectors | 2x 6-pin | None |
| Graphics Features | ||
| DirectX | 12 (11_1) | 12 (11_1) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | 1.2 | 1.2 |
| Shader Model | 5.1 | 5.1 |