AMD Radeon HD 8870 OEM vs AMD Radeon RX 560X Mobile
What is the difference between AMD Radeon HD 8870 OEM and AMD Radeon RX 560X Mobile. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Pitcairn | GPU Name | Polaris 21 |
| Pitcairn XT (215-0828047) | Model number | Polaris 21M XT |
| GCN 1.0 | Architecture | GCN 4.0 |
| TSMC | Foundry | GlobalFoundries |
| 28 nm | Process Size | 14 nm |
| 2,800 million | Transistors | 3,000 million |
| 212 mm² | Die Size | 123 mm² |
Graphics Card
| Jan 8th, 2013 | Release Date | Apr 11th, 2018 |
| Sea Islands (HD 8800) | Family | Mobility Radeon (RX M500X) |
| End-of-life | Production | Active |
| Southern Islands | Predecessor | Crystal System |
| PCIe 3.0 x16 | Bus Interface | MXM-B (3.0) |
Memory
| 2 GB | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 256 bit | Memory Bus | 128 bit |
| 153.6 GB/s | Bandwidth | 96.00 GB/s |
Performance
| 32.00 GPixel/s | Pixel fillrate | 19.23 GPixel/s |
| 80.00 GTexel/s | Texture fillrate | 76.93 GTexel/s |
| 2.560 TFLOPS | FP32 (float) performance | 2.462 TFLOPS |
| 160.0 GFLOPS (1:16) | FP64 (double) performance | 153.9 GFLOPS (1:16) |
Clock Speeds
| 1200 MHz 4.8 Gbps effective | Memory Clock | 1500 MHz 6 Gbps effective |
Render Config
| 1280 | Shading Units | 1024 |
| 80 | TMUs | 64 |
| 32 | ROPs | 16 |
| 20 | Compute Units | 16 |
| 16 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 512 KB | L2 Cache | 1024 KB |
Board Design
| Dual-slot | Slot Width | MXM Module |
| 175 W | Thermal design power (TDP) | 65 W |
| 1x DVI 1x HDMI 2x mini-DisplayPort | Display Connectors | No outputs |
| 2x 6-pin | Power Connectors | None |
API support
| 12 (11_1) | DirectX | 12 (12_0) |
| 4.6 | OpenGL | 4.6 |
| 1.2 | OpenCL | 2.1 |
| 1.2 | Vulkan | 1.2 |
| 5.1 | Shader Model | 6.4 |