Product Compare
NVIDIA GeForce GTX 950 vs NVIDIA GeForce GTX 660
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Aug 2015 | Sep 2012 |
| Generation | GeForce 900 | GeForce 600 |
| Type | Desktop | Desktop |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Clock Speeds | ||
| Base Clock | 1024 MHz | 980 MHz |
| Boost Clock | 1188 MHz | 1032 MHz |
| Memory Clock | 1653 MHz | 1502 MHz |
| Memory | ||
| Memory Size | 2GB | 2GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 128bit | 192bit |
| Bandwidth | 105.8GB/s | 144.2GB/s |
| Render Config | ||
| Shading Units | 768 | 960 |
| TMUs | 48 | 80 |
| ROPs | 32 | 24 |
| L1 Cache | 48 KB (per SMM) | 16 KB (per SMX) |
| L2 Cache | 1024 KB | 384 KB |
| Theoretical Performance | ||
| Pixel Rate | 38.02 GPixel/s | 20.64 GPixel/s |
| Texture Rate | 57.02 GTexel/s | 82.56 GTexel/s |
| FP32 (float) | 1.825 TFLOPS | 1.981 TFLOPS |
| FP64 (double) | 57.02 GFLOPS | 82.56 GFLOPS |
| Graphics Processor | ||
| GPU Name | GM206 | GK106 |
| GPU Variant | GM206-250-A1 | GK106-400-A1 |
| Architecture | Maxwell 2.0 | Kepler |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| Transistors | 2.94 billion | 2.54 billion |
| Die Size | 228 mm² | 221 mm² |
| Board Design | ||
| TDP | 90W | 140W |
| Suggested PSU | 250 W | 300 W |
| Outputs | 1x DVI1x HDMI 2.03x DisplayPort 1.4a | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 |
| Power Connectors | 1x 6-pin | 1x 6-pin |
| Graphics Features | ||
| DirectX | 12 (12_1) | 12 (11_0) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | 1.3 | 1.1 |
| CUDA | 5.2 | 3.0 |
| Shader Model | 6.4 | 5.1 |
| Benchmarks | ||
| 3DMark Time Spy | 1903 | 1194 |
| 3DMark Time Spy Extreme | 396 | 260 |