Product Compare
AMD Radeon HD 6930 vs NVIDIA GeForce GTX 660
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Dec 2011 | Sep 2012 |
| Generation | Northern Islands | GeForce 600 |
| Type | Desktop | Desktop |
| Bus Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Clock Speeds | ||
| Memory Clock | 1200 MHz | 1502 MHz |
| Base Clock | 980 MHz | |
| Boost Clock | 1032 MHz | |
| Memory | ||
| Memory Size | 1024MB | 2GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256bit | 192bit |
| Bandwidth | 153.6GB/s | 144.2GB/s |
| Render Config | ||
| Compute Units | 20 | |
| Shading Units | 1280 | 960 |
| TMUs | 80 | 80 |
| ROPs | 32 | 24 |
| L1 Cache | 8 KB (per CU) | 16 KB (per SMX) |
| L2 Cache | 512 KB | 384 KB |
| Theoretical Performance | ||
| Pixel Rate | 24.00 GPixel/s | 20.64 GPixel/s |
| Texture Rate | 60.00 GTexel/s | 82.56 GTexel/s |
| FP32 (float) | 1.920 TFLOPS | 1.981 TFLOPS |
| FP64 (double) | 480.0 GFLOPS | 82.56 GFLOPS |
| Graphics Processor | ||
| GPU Name | Cayman | GK106 |
| GPU Variant | Cayman CE(215-0807105) | GK106-400-A1 |
| Architecture | TeraScale 3 | Kepler |
| Foundry | TSMC | TSMC |
| Process Size | 40 nm | 28 nm |
| Transistors | 2.64 billion | 2.54 billion |
| Die Size | 389 mm² | 221 mm² |
| Board Design | ||
| TDP | 186W | 140W |
| Suggested PSU | 450 W | 300 W |
| Outputs | 2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 |
| Power Connectors | 2x 6-pin | 1x 6-pin |
| Graphics Features | ||
| DirectX | 11.2 (11_0) | 12 (11_0) |
| OpenGL | 4.4 | 4.6 |
| OpenCL | 1.2 | 3.0 |
| Vulkan | N/A | 1.1 |
| Shader Model | 5.0 | 5.1 |
| CUDA | 3.0 | |