ATI Radeon HD 4870 vs ATI Radeon HD 4870 Mac Edition
What is the difference between ATI Radeon HD 4870 and ATI Radeon HD 4870 Mac Edition. Find out which graphics card has better performance.
Graphics Processor (GPU)
| RV770 | GPU Name | RV770 |
| RV770 XT (215-0669049) | Model number | RV770 XT Mac (215-0669080) |
| TeraScale | Architecture | TeraScale |
| TSMC | Foundry | TSMC |
| 55 nm | Process Size | 55 nm |
| 956 million | Transistors | 956 million |
| 256 mm² | Die Size | 256 mm² |
Graphics Card
| Jun 25th, 2008 | Release Date | Jan 6th, 2009 |
| Radeon R700 (HD 4800) | Family | Radeon R700 (HD 4800) |
| End-of-life | Production | End-of-life |
| Radeon R600 | Predecessor | Radeon R600 |
| PCIe 2.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 512 MB | Memory Size | 512 MB |
| GDDR5 | Memory Type | GDDR5 |
| 256 bit | Memory Bus | 256 bit |
| 115.2 GB/s | Bandwidth | 108.8 GB/s |
Performance
| 12.00 GPixel/s | Pixel fillrate | 12.00 GPixel/s |
| 30.00 GTexel/s | Texture fillrate | 30.00 GTexel/s |
| 1,200 GFLOPS | FP32 (float) performance | 1,200 GFLOPS |
| 240.0 GFLOPS (1:5) | FP64 (double) performance | 240.0 GFLOPS (1:5) |
Clock Speeds
| 900 MHz 3.6 Gbps effective | Memory Clock | 850 MHz 3.4 Gbps effective |
| 750 MHz | GPU Clock | 750 MHz |
Render Config
| 800 | Shading Units | 800 |
| 40 | TMUs | 40 |
| 16 | ROPs | 16 |
| 10 | Compute Units | 10 |
| 16 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 256 KB | L2 Cache | 256 KB |
Board Design
| Dual-slot | Slot Width | Dual-slot |
| 241 mm 9.5 inches | Length | 250 mm 9.8 inches |
| 150 W | Thermal design power (TDP) | 150 W |
| 450 W | Suggested PSU | 450 W |
| 2x DVI 1x S-Video | Display Connectors | 1x DVI 1x mini-DisplayPort |
| 2x 6-pin | Power Connectors | 2x 6-pin |
| B507-31 | Board Number | B771 |
API support
| 10.1 (10_1) | DirectX | 10.1 (10_1) |
| 3.3 | OpenGL | 3.3 |
| 1.1 | OpenCL | 1.1 |
| N/A | Vulkan | N/A |
| 4.1 | Shader Model | 4.1 |