AMD Radeon HD 6830M vs AMD Radeon R5 M255
What is the difference between AMD Radeon HD 6830M and AMD Radeon R5 M255. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Granville | GPU Name | Topaz |
| Granville LP | Model number | Topaz PRO (216-0864032) |
| TeraScale 2 | Architecture | GCN 3.0 |
| TSMC | Foundry | TSMC |
| 40 nm | Process Size | 28 nm |
| 1,040 million | Transistors | 1,550 million |
| 166 mm² | Die Size | 125 mm² |
Graphics Card
| Jan 4th, 2011 | Release Date | Oct 12th, 2014 |
| Vancouver (HD 6800M) | Family | Crystal System (R5 M200) |
| End-of-life | Production | End-of-life |
| Manhattan | Predecessor | Solar System |
| PCIe 2.0 x16 | Bus Interface | PCIe 3.0 x8 |
Memory
| 1024 MB | Memory Size | 1024 MB |
| DDR3 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 128 bit |
| 25.60 GB/s | Bandwidth | 64.00 GB/s |
Performance
| 9.200 GPixel/s | Pixel fillrate | 7.520 GPixel/s |
| 23.00 GTexel/s | Texture fillrate | 22.56 GTexel/s |
| 920.0 GFLOPS | FP32 (float) performance | 721.9 GFLOPS |
Clock Speeds
| 800 MHz 1600 Mbps effective | Memory Clock | 1000 MHz 4 Gbps effective |
Render Config
| 800 | Shading Units | 384 |
| 40 | TMUs | 24 |
| 16 | ROPs | 8 |
| 10 | Compute Units | 6 |
| 8 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 256 KB | L2 Cache | 256 KB |
Board Design
| 39 W | Thermal design power (TDP) | unknown |
| No outputs | Display Connectors | No outputs |
API support
| 11.2 (11_0) | DirectX | 12 (12_0) |
| 4.4 | OpenGL | 4.6 |
| 1.2 | OpenCL | 2.0 |
| N/A | Vulkan | 1.2 |
| 5.0 | Shader Model | 6.3 |