Product Compare
NVIDIA GeForce GTX 980 vs NVIDIA GeForce GTX 660 Ti
| GPU | GPU | |
|---|---|---|
| Graphics Card | ||
| Release Date | Sep 2014 | Aug 2012 |
| Generation | GeForce 900 | GeForce 600 |
| Type | Desktop | Desktop |
| Bus Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Clock Speeds | ||
| Base Clock | 1127 MHz | 915 MHz |
| Boost Clock | 1216 MHz | 980 MHz |
| Memory Clock | 1753 MHz | 1502 MHz |
| Memory | ||
| Memory Size | 4GB | 2GB |
| Memory Type | GDDR5 | GDDR5 |
| Memory Bus | 256bit | 192bit |
| Bandwidth | 224.4GB/s | 144.2GB/s |
| Render Config | ||
| Shading Units | 2048 | 1344 |
| TMUs | 128 | 112 |
| ROPs | 64 | 24 |
| L1 Cache | 48 KB (per SMM) | 16 KB (per SMX) |
| L2 Cache | 2 MB | 384 KB |
| Theoretical Performance | ||
| Pixel Rate | 77.82 GPixel/s | 27.44 GPixel/s |
| Texture Rate | 155.6 GTexel/s | 109.8 GTexel/s |
| FP32 (float) | 4.981 TFLOPS | 2.634 TFLOPS |
| FP64 (double) | 155.6 GFLOPS | 109.8 GFLOPS |
| Graphics Processor | ||
| GPU Name | GM204 | GK104 |
| GPU Variant | GM204-400-A1 | GK104-300-KD-A2 |
| Architecture | Maxwell 2.0 | Kepler |
| Foundry | TSMC | TSMC |
| Process Size | 28 nm | 28 nm |
| Transistors | 5.2 billion | 3.54 billion |
| Die Size | 398 mm² | 294 mm² |
| Board Design | ||
| TDP | 165W | 150W |
| Suggested PSU | 450 W | 450 W |
| Outputs | 1x DVI1x HDMI 2.03x DisplayPort 1.4a | 2x DVI1x HDMI 1.4a1x DisplayPort 1.2 |
| Power Connectors | 2x 6-pin | 2x 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 |