Product Compare
NVIDIA GeForce GTX 660 OEM vs AMD Radeon HD 6930
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Aug 2012 | Dec 2011 |
| Generation | GeForce 600 | Northern Islands |
| Type | Desktop | Desktop |
| Bus Interface | PCIe 3.0 x16 | PCIe 2.0 x16 |
| Clock Speeds | ||
| Base Clock | 823 MHz | |
| Boost Clock | 888 MHz | |
| Memory Clock | 1400 MHz | 1200 MHz |
| Memory | ||
| Memory Size | 1536MB | 1024MB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 192bit | 256bit |
| Bandwidth | 134.4GB/s | 153.6GB/s |
| Render Config | ||
| Shading Units | 1152 | 1280 |
| TMUs | 96 | 80 |
| ROPs | 24 | 32 |
| L1 Cache | 16 KB (per SMX) | 8 KB (per CU) |
| L2 Cache | 384 KB | 512 KB |
| Compute Units | 20 | |
| Theoretical Performance | ||
| Pixel Rate | 21.31 GPixel/s | 24.00 GPixel/s |
| Texture Rate | 85.25 GTexel/s | 60.00 GTexel/s |
| FP32 (float) | 2.046 TFLOPS | 1.920 TFLOPS |
| FP64 (double) | 85.25 GFLOPS | 480.0 GFLOPS |
| Graphics Processor | ||
| GPU Name | GK104 | Cayman |
| GPU Variant | GK104-200-KD-A2 | Cayman CE(215-0807105) |
| Architecture | Kepler | TeraScale 3 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 40 nm |
| Transistors | 3.54 billion | 2.64 billion |
| Die Size | 294 mm² | 389 mm² |
| Board Design | ||
| TDP | 130W | 186W |
| Suggested PSU | 300 W | 450 W |
| Outputs | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 | 2x DVI1x HDMI 1.4a2x mini-DisplayPort 1.2 |
| Power Connectors | 1x 6-pin | 2x 6-pin |
| Graphics Features | ||
| DirectX | 12 (11_0) | 11.2 (11_0) |
| OpenGL | 4.6 | 4.4 |
| OpenCL | 3.0 | 1.2 |
| Vulkan | 1.1 | N/A |
| CUDA | 3.0 | |
| Shader Model | 5.1 | 5.0 |