AMD FireStream 9270 vs ATI Radeon HD 4870 Mac Edition
What is the difference between AMD FireStream 9270 and ATI Radeon HD 4870 Mac Edition. Find out which graphics card has better performance.
Graphics Processor (GPU)
| RV770 | GPU Name | RV770 |
| RV770 XT | 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
| Nov 13th, 2008 | Release Date | Jan 6th, 2009 |
| FireStream | Family | Radeon R700 (HD 4800) |
| End-of-life | Production | End-of-life |
| PCIe 2.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 2 GB | 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 |
| 160 W | Thermal design power (TDP) | 150 W |
| 450 W | Suggested PSU | 450 W |
| 1x DVI | Display Connectors | 1x DVI 1x mini-DisplayPort |
| 2x 6-pin | Power Connectors | 2x 6-pin |
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 |