AMD Radeon HD 6990M vs AMD Radeon R9 M375
What is the difference between AMD Radeon HD 6990M and AMD Radeon R9 M375. Find out which graphics card has better performance.
Graphics Processor (GPU)
| Blackcomb | GPU Name | Tropo |
| Blackcomb XTX (216-0811030) | Model number | Tropo XT2 |
| TeraScale 2 | Architecture | GCN 1.0 |
| TSMC | Foundry | TSMC |
| 40 nm | Process Size | 28 nm |
| 1,700 million | Transistors | 1,500 million |
| 212 mm² | Die Size | 123 mm² |
Graphics Card
| Jul 12th, 2011 | Release Date | May 5th, 2015 |
| Vancouver (HD 6900M) | Family | Crystal System (R9 M300) |
| End-of-life | Production | Active |
| Manhattan | Predecessor | Solar System |
| MXM-B (3.0) | Bus Interface | PCIe 3.0 x16 |
Memory
| 2 GB | Memory Size | 2 GB |
| GDDR5 | Memory Type | DDR3 |
| 256 bit | Memory Bus | 128 bit |
| 115.2 GB/s | Bandwidth | 28.80 GB/s |
Performance
| 22.88 GPixel/s | Pixel fillrate | 16.24 GPixel/s |
| 40.04 GTexel/s | Texture fillrate | 40.60 GTexel/s |
| 1.602 TFLOPS | FP32 (float) performance | 1,299 GFLOPS |
Clock Speeds
| 900 MHz 3.6 Gbps effective | Memory Clock | 900 MHz 1800 Mbps effective |
Render Config
| 1120 | Shading Units | 640 |
| 56 | TMUs | 40 |
| 32 | ROPs | 16 |
| 14 | Compute Units | 10 |
| 8 KB (per CU) | L1 Cache | 16 KB (per CU) |
| 512 KB | L2 Cache | 256 KB |
Board Design
| 100 W | Thermal design power (TDP) | unknown |
| No outputs | Display Connectors | No outputs |
API support
| 11.2 (11_0) | DirectX | 12 (11_1) |
| 4.4 | OpenGL | 4.6 |
| 1.2 | OpenCL | 1.2 |
| N/A | Vulkan | 1.2 |
| 5.0 | Shader Model | 5.1 |