Product Compare
ATI Radeon HD 5870 Mac Edition vs AMD Radeon HD 6870 X2
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Jun 2010 | Jul 2011 |
| Generation | Evergreen | Northern Islands |
| Type | Desktop | Desktop |
| Bus Interface | PCIe 2.0 x16 | PCIe 2.0 x16 |
| Clock Speeds | ||
| Memory Clock | 1195 MHz | 1050 MHz |
| Memory | ||
| Memory Size | 1024MB | 1024MB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256bit | 256bit |
| Bandwidth | 153.0GB/s | 134.4GB/s |
| Render Config | ||
| Compute Units | 20 | 14 |
| Shading Units | 1600 | 1120 |
| TMUs | 80 | 56 |
| ROPs | 32 | 32 |
| L1 Cache | 8 KB (per CU) | 8 KB (per CU) |
| L2 Cache | 512 KB | 512 KB |
| Theoretical Performance | ||
| Pixel Rate | 27.20 GPixel/s | 28.80 GPixel/s |
| Texture Rate | 68.00 GTexel/s | 50.40 GTexel/s |
| FP32 (float) | 2.720 TFLOPS | 2.016 TFLOPS |
| FP64 (double) | 544.0 GFLOPS | |
| Graphics Processor | ||
| GPU Name | Cypress | Barts |
| GPU Variant | Cypress XT(215-0735033) | Barts XT(215-0798000) |
| Architecture | TeraScale 2 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process Size | 40 nm | 40 nm |
| Transistors | 2.154 billion | 1.7 billion |
| Die Size | 334 mm² | 255 mm² |
| Board Design | ||
| TDP | 228W | 300W |
| Suggested PSU | 550 W | 700 W |
| Outputs | 1x DVI2x mini-DisplayPort 1.1 | 2x DVI1x HDMI 1.3a2x mini-DisplayPort 1.1 |
| Power Connectors | 2x 6-pin | |
| Graphics Features | ||
| DirectX | 11.2 (11_0) | 11.2 (11_0) |
| OpenGL | 4.4 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | N/A | N/A |
| Shader Model | 5.0 | 5.0 |