NVIDIA GeForce GTX 1080 vs NVIDIA GeForce GTX 660
Graphics Processor
| GPU model | GP104 | GK106 |
|---|---|---|
| GPU variant | GP104-400-A1 | GK106-400-A1 |
| Architecture | Pascal | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 16 nm | 28 nm |
| Number of transistors | 7,200 million | 2,540 million |
| Die size | 314 mm² | 221 mm² |
Graphics Card
| Release date | May 27th, 2016 | Sep 6th, 2012 |
|---|---|---|
| Generation | GeForce 10 | GeForce 600 |
| Predecessor | GeForce 900 | GeForce 500 |
| Successor | GeForce 20 | GeForce 700 |
| Production | End-of-life | End-of-life |
| Launch price | 599 USD | 229 USD |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Reviews | 183 in our database | 77 in our database |
Clocks
| Base clock | 1607 MHz | 980 MHz |
|---|---|---|
| Boost clock | 1733 MHz | 1032 MHz |
| Memory clock | 1251 MHz 10 Gbps effective | 1502 MHz 6 Gbps effective |
Memory Configuration
| Memory size | 8 GB | 2 GB |
|---|---|---|
| Memory type | GDDR5X | GDDR5 |
| Memory bus width | 256 bit | 192 bit |
| Bandwidth | 320.3 GB/s | 144.2 GB/s |
Render Configuration
| Shading units | 2560 | 960 |
|---|---|---|
| TMUs | 160 | 80 |
| ROPs | 64 | 24 |
| SM count | 20 | — |
| Cache L1 | 48 KB (per SM) | 16 KB (per SMX) |
| Cache L2 | 2 MB | 384 KB |
| SMX count | — | 5 |
Performance
| Pixel rate | 110.9 GPixel/s | 20.64 GPixel/s |
|---|---|---|
| Texture rate | 277.3 GTexel/s | 82.56 GTexel/s |
| FP16 (half) performance | 138.6 GFLOPS (1:64) | — |
| FP32 (float) performance | 8.873 TFLOPS | 1.981 TFLOPS |
| FP64 (double) performance | 277.3 GFLOPS (1:32) | 82.56 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | Dual-slot | Dual-slot |
|---|---|---|
| Length | 267 mm 10.5 inches | 241 mm 9.5 inches |
| Width | 112 mm 4.4 inches | — |
| Height | 40 mm 1.6 inches | — |
| TDP | 180 W | 140 W |
| Suggested PSU | 450 W | 300 W |
| Outputs | 1x DVI1x HDMI3x DisplayPort | 2x DVI1x HDMI1x DisplayPort |
| Power connectors | 1x 8-pin | 1x 6-pin |
| Board number | PG413 SKU 0 | P2030 |
API Support & Features
| DirectX | 12 (12_1) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | 1.2 | 1.1 |
| CUDA | 6.1 | 3.0 |
| Shader model | 6.4 | 5.1 |
