Product Compare
AMD Radeon HD 6990 vs AMD Radeon HD 6990M
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Mar 2011 | Jul 2011 |
| Generation | Northern Islands | Vancouver |
| Type | Desktop | Mobile |
| Bus Interface | PCIe 2.0 x16 | MXM-B (3.0) |
| Clock Speeds | ||
| Memory Clock | 1250 MHz | 900 MHz |
| Memory | ||
| Memory Size | 2GB | 2GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256bit | 256bit |
| Bandwidth | 160.0GB/s | 115.2GB/s |
| Render Config | ||
| Compute Units | 24 | 14 |
| Shading Units | 1536 | 1120 |
| TMUs | 96 | 56 |
| ROPs | 32 | 32 |
| L1 Cache | 8 KB (per CU) | 8 KB (per CU) |
| L2 Cache | 512 KB | 512 KB |
| Theoretical Performance | ||
| Pixel Rate | 26.56 GPixel/s | 22.88 GPixel/s |
| Texture Rate | 79.68 GTexel/s | 40.04 GTexel/s |
| FP32 (float) | 2.550 TFLOPS | 1.602 TFLOPS |
| FP64 (double) | 637.4 GFLOPS | |
| Graphics Processor | ||
| GPU Name | Antilles | Blackcomb |
| GPU Variant | Antilles XT(215-0807027) | Blackcomb XTX(216-0811030) |
| Architecture | TeraScale 3 | TeraScale 2 |
| Foundry | TSMC | TSMC |
| Process Size | 40 nm | 40 nm |
| Transistors | 2.64 billion | 1.7 billion |
| Die Size | 389 mm² | 212 mm² |
| Board Design | ||
| TDP | 375W | 100W |
| Suggested PSU | 750 W | |
| Outputs | 1x DVI4x mini-DisplayPort 1.2 | No outputs |
| Power Connectors | 2x 8-pin | None |
| Graphics Features | ||
| DirectX | 11.2 (11_0) | 11.2 (11_0) |
| OpenGL | 4.4 | 4.4 |
| OpenCL | 1.2 | 1.2 |
| Vulkan | N/A | N/A |
| Shader Model | 5.0 | 5.0 |