AMD Radeon HD 7950 Boost vs AMD Radeon R9 285
What is the difference between AMD Radeon HD 7950 Boost and AMD Radeon R9 285. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Tahiti | GPU Name | Tonga |
| Tahiti PRO2 (215-0821282) | Model number | Tonga PRO (215-0851128) |
| GCN 1.0 | Architecture | GCN 3.0 |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 28 nm |
| 4,313 million | Transistors | 5,000 million |
| 352 mm² | Die Size | 366 mm² |
Graphics Card
| Jun 22nd, 2012 | Release Date | Sep 2nd, 2014 |
| Southern Islands (HD 7900) | Family | Volcanic Islands (R9 200) |
| End-of-life | Production | End-of-life |
| 449 USD | Launch Price | 249 USD |
| Northern Islands | Predecessor | Sea Islands |
| PCIe 3.0 x16 | Bus Interface | PCIe 3.0 x16 |
Memory
| 3 GB | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 384 bit | Memory Bus | 256 bit |
| 240.0 GB/s | Bandwidth | 176.0 GB/s |
Performance
| 29.60 GPixel/s | Pixel fillrate | 29.38 GPixel/s |
| 103.6 GTexel/s | Texture fillrate | 102.8 GTexel/s |
| 3.315 TFLOPS | FP32 (float) performance | 3.290 TFLOPS |
| 828.8 GFLOPS (1:4) | FP64 (double) performance | 205.6 GFLOPS (1:16) |
Clock Speeds
| 1250 MHz 5 Gbps effective | Memory Clock | 1375 MHz 5.5 Gbps effective |
Render Config
| 1792 | Shading Units | 1792 |
| 112 | TMUs | 112 |
| 32 | ROPs | 32 |
| 28 | Compute Units | 28 |
| 16 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 768 KB | L2 Cache | 512 KB |
Board Design
| Dual-slot | Slot Width | Dual-slot |
| 275 mm 10.8 inches | Length | 221 mm 8.7 inches |
| 111 mm 4.4 inches | Width | 109 mm 4.3 inches |
| 38 mm 1.5 inches | Height | 36 mm 1.4 inches |
| 200 W | Thermal design power (TDP) | 190 W |
| 550 W | Suggested PSU | 450 W |
| 1x DVI 1x HDMI 2x mini-DisplayPort | Display Connectors | 2x DVI 1x HDMI 1x DisplayPort |
| 2x 6-pin | Power Connectors | 2x 6-pin |
| C386 | Board Number | C766 |
API support
| 12 (11_1) | DirectX | 12 (12_0) |
| 4.6 | OpenGL | 4.6 |
| 1.2 | OpenCL | 2.0 |
| 1.2 | Vulkan | 1.2 |
| 5.1 | Shader Model | 6.3 |