AMD Radeon RX 455 OEM vs AMD Radeon HD 6870
What is the difference between AMD Radeon RX 455 OEM and AMD Radeon HD 6870. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Tobago | GPU Name | Barts |
| Tobago PRO (215-0875010) | Model number | Barts XT (215-0798000) |
| GCN 2.0 | Architecture | TeraScale 2 |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 40 nm |
| 2,080 million | Transistors | 1,700 million |
| 160 mm² | Die Size | 255 mm² |
Graphics Card
| Jun 30th, 2016 | Release Date | Oct 21st, 2010 |
| Arctic Islands (RX 400) | Family | Northern Islands (HD 6800) |
| Active | Production | End-of-life |
| Pirate Islands | Predecessor | Evergreen |
| PCIe 3.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 2 GB | Memory Size | 1024 MB |
| GDDR5 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 256 bit |
| 104.0 GB/s | Bandwidth | 134.4 GB/s |
Performance
| 16.80 GPixel/s | Pixel fillrate | 28.80 GPixel/s |
| 50.40 GTexel/s | Texture fillrate | 50.40 GTexel/s |
| 1.613 TFLOPS | FP32 (float) performance | 2.016 TFLOPS |
Clock Speeds
| 1625 MHz 6.5 Gbps effective | Memory Clock | 1050 MHz 4.2 Gbps effective |
| 1050 MHz | GPU Clock | 900 MHz |
Render Config
| 768 | Shading Units | 1120 |
| 48 | TMUs | 56 |
| 16 | ROPs | 32 |
| 12 | Compute Units | 14 |
| 16 KB (per CU) | L1 Cache | 8 KB (per CU) |
| 256 KB | L2 Cache | 512 KB |
Board Design
| Single-slot | Slot Width | Dual-slot |
| 165 mm 6.5 inches | Length | 247 mm 9.7 inches |
| 100 W | Thermal design power (TDP) | 151 W |
| 300 W | Suggested PSU | 450 W |
| 1x DVI 1x HDMI 1x DisplayPort | Display Connectors | 2x DVI 1x HDMI 2x mini-DisplayPort |
| 1x 6-pin | Power Connectors | 2x 6-pin |
| C582, C936 | Board Number | C222 |
API support
| 12 (12_0) | DirectX | 11.2 (11_0) |
| 4.6 | OpenGL | 4.4 |
| 2.0 | OpenCL | 1.2 |
| 1.2 | Vulkan | N/A |
| 6.3 | Shader Model | 5.0 |