AMD Radeon HD 8770 OEM vs AMD Radeon R9 270 1024SP
What is the difference between AMD Radeon HD 8770 OEM and AMD Radeon R9 270 1024SP. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Bonaire | GPU Name | Pitcairn |
| Bonaire XT (215-0839039) | Model number | Pitcairn PRO (215-0828062) |
| GCN 2.0 | Architecture | GCN 1.0 |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 28 nm |
| 2,080 million | Transistors | 2,800 million |
| 160 mm² | Die Size | 212 mm² |
Graphics Card
| Sep 2nd, 2013 | Release Date | Mar 13th, 2015 |
| Sea Islands (HD 8700) | Family | Volcanic Islands (R9 200) |
| End-of-life | Production | Active |
| Southern Islands | Predecessor | Sea Islands |
| PCIe 3.0 x16 | Bus Interface | PCIe 3.0 x16 |
Memory
| 1024 MB | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 256 bit |
| 96.00 GB/s | Bandwidth | 153.6 GB/s |
Performance
| 16.80 GPixel/s | Pixel fillrate | 29.60 GPixel/s |
| 58.80 GTexel/s | Texture fillrate | 59.20 GTexel/s |
| 1.882 TFLOPS | FP32 (float) performance | 1.894 TFLOPS |
| 117.6 GFLOPS (1:16) | FP64 (double) performance | 118.4 GFLOPS (1:16) |
Clock Speeds
| 1500 MHz 6 Gbps effective | Memory Clock | 1200 MHz 4.8 Gbps effective |
Render Config
| 896 | Shading Units | 1024 |
| 56 | TMUs | 64 |
| 16 | ROPs | 32 |
| 14 | Compute Units | 16 |
| 16 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 256 KB | L2 Cache | 512 KB |
Board Design
| Dual-slot | Slot Width | Dual-slot |
| 85 W | Thermal design power (TDP) | 150 W |
| 250 W | Suggested PSU | 450 W |
| 1x DVI 1x HDMI 2x mini-DisplayPort | Display Connectors | 2x DVI 1x HDMI 1x DisplayPort |
| 1x 6-pin | Power Connectors | 1x 6-pin |
API support
| 12 (12_0) | DirectX | 12 (11_1) |
| 4.6 | OpenGL | 4.6 |
| 2.0 | OpenCL | 1.2 |
| 1.2 | Vulkan | 1.2 |
| 6.3 | Shader Model | 5.1 |