Product Compare
NVIDIA GeForce GTX 660 Rev. 2 vs AMD Radeon R9 M385
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Sep 2014 | May 2015 |
| Generation | GeForce 600 | Gem System |
| Type | Desktop | Mobile |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Clock Speeds | ||
| Base Clock | 980 MHz | 900 MHz |
| Boost Clock | 1032 MHz | 1000 MHz |
| Memory Clock | 1502 MHz | 1200 MHz |
| Memory | ||
| Memory Size | 2GB | 4GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 192bit | 128bit |
| Bandwidth | 144.2GB/s | 76.80GB/s |
| Render Config | ||
| Shading Units | 960 | 896 |
| TMUs | 80 | 56 |
| ROPs | 24 | 16 |
| L1 Cache | 16 KB (per SMX) | 16 KB (per CU) |
| L2 Cache | 384 KB | 256 KB |
| Compute Units | 14 | |
| Theoretical Performance | ||
| Pixel Rate | 20.64 GPixel/s | 16.00 GPixel/s |
| Texture Rate | 82.56 GTexel/s | 56.00 GTexel/s |
| FP32 (float) | 1.981 TFLOPS | 1.792 TFLOPS |
| FP64 (double) | 82.56 GFLOPS | 112.0 GFLOPS |
| Graphics Processor | ||
| GPU Name | GK104 | Strato |
| Architecture | Kepler | GCN 2.0 |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| Transistors | 3.54 billion | 2.08 billion |
| Die Size | 294 mm² | 160 mm² |
| GPU Variant | Strato XT | |
| Board Design | ||
| TDP | 140W | Unknown |
| Suggested PSU | 300 W | |
| Outputs | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 | Portable Device Dependent |
| Power Connectors | 1x 6-pin | |
| Graphics Features | ||
| DirectX | 12 (11_0) | 12 (12_0) |
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 2.1 |
| Vulkan | 1.1 | 1.2.170 |
| CUDA | 3.0 | |
| Shader Model | 5.1 | 6.5 |