AMD Radeon HD 8470 OEM vs ATI Radeon HD 4580
What is the difference between AMD Radeon HD 8470 OEM and ATI Radeon HD 4580. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Caicos | GPU Name | RV635 |
| Caicos XT (215-0804070) | Model number | RV635 PRO (215-0682008) |
| TeraScale 2 | Architecture | TeraScale |
| TSMC | Foundry | TSMC |
| 40 nm | Process Size | 55 nm |
| 370 million | Transistors | 378 million |
| 67 mm² | Die Size | 135 mm² |
Graphics Card
| Jan 8th, 2013 | Release Date | Nov 20th, 2011 |
| Sea Islands (HD 8400) | Family | Radeon R700 (HD 4500) |
| End-of-life | Production | End-of-life |
| Southern Islands | Predecessor | Radeon R600 |
| PCIe 2.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 1024 MB | Memory Size | 512 MB |
| GDDR5 | Memory Type | GDDR3 |
| 64 bit | Memory Bus | 128 bit |
| 25.60 GB/s | Bandwidth | 22.18 GB/s |
Performance
| 3.100 GPixel/s | Pixel fillrate | 3.184 GPixel/s |
| 6.200 GTexel/s | Texture fillrate | 6.368 GTexel/s |
| 248.0 GFLOPS | FP32 (float) performance | 191.0 GFLOPS |
Clock Speeds
| 800 MHz 3.2 Gbps effective | Memory Clock | 693 MHz 1386 Mbps effective |
| 775 MHz | GPU Clock | 796 MHz |
Render Config
| 160 | Shading Units | 120 |
| 8 | TMUs | 8 |
| 4 | ROPs | 4 |
| 2 | Compute Units | 3 |
| 128 KB | L2 Cache | 128 KB |
Board Design
| Single-slot | Slot Width | Single-slot |
| 168 mm 6.6 inches | Length | 190 mm 7.5 inches |
| 35 W | Thermal design power (TDP) | 65 W |
| 200 W | Suggested PSU | 250 W |
| 1x DVI 1x HDMI | Display Connectors | 2x DVI 1x S-Video |
| None | Power Connectors | None |
API support
| 11.2 (11_0) | DirectX | 10.1 (10_1) |
| 4.4 | OpenGL | 3.3 |
| 1.2 | OpenCL | N/A |
| N/A | Vulkan | N/A |
| 5.0 | Shader Model | 4.1 |