AMD Radeon Sky 700 vs AMD Radeon R9 285
What is the difference between AMD Radeon Sky 700 and AMD Radeon R9 285. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Tahiti | GPU Name | Tonga |
| Tahiti PRO GL | 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
| Mar 27th, 2013 | Release Date | Sep 2nd, 2014 |
| Radeon Sky (x00) | Family | Volcanic Islands (R9 200) |
| End-of-life | Production | End-of-life |
| PCIe 3.0 x16 | Bus Interface | PCIe 3.0 x16 |
Memory
| 6 GB | Memory Size | 2 GB |
| GDDR5 | Memory Type | GDDR5 |
| 384 bit | Memory Bus | 256 bit |
| 264.0 GB/s | Bandwidth | 176.0 GB/s |
Performance
| 28.80 GPixel/s | Pixel fillrate | 29.38 GPixel/s |
| 100.8 GTexel/s | Texture fillrate | 102.8 GTexel/s |
| 3.226 TFLOPS | FP32 (float) performance | 3.290 TFLOPS |
| 806.4 GFLOPS (1:4) | FP64 (double) performance | 205.6 GFLOPS (1:16) |
Clock Speeds
| 1375 MHz 5.5 Gbps effective | Memory Clock | 1375 MHz 5.5 Gbps effective |
| 900 MHz | GPU Clock | 918 MHz |
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 |
| 267 mm 10.5 inches | Length | 221 mm 8.7 inches |
| 111 mm 4.4 inches | Width | 109 mm 4.3 inches |
| 225 W | Thermal design power (TDP) | 190 W |
| 550 W | Suggested PSU | 450 W |
| 1x DisplayPort | Display Connectors | 2x DVI 1x HDMI 1x DisplayPort |
| 1x 8-pin | Power Connectors | 2x 6-pin |
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 |