NVIDIA GeForce GTX 660 OEM vs NVIDIA GeForce GTX 680MX Mac Edition
Graphics Processor
| GPU model | GK104 | GK104 |
|---|---|---|
| GPU variant | GK104-200-KD-A2 | N13E-GTX2-A2 |
| Architecture | Kepler | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 3,540 million | 3,540 million |
| Die size | 294 mm² | 294 mm² |
Graphics Card
| Release date | Aug 22nd, 2012 | — |
|---|---|---|
| Generation | GeForce 600 | — |
| Production | End-of-life | — |
| Interface | PCIe 3.0 x16 | — |
| Reviews | 77 in our database | — |
| Predecessor | GeForce 500 | — |
| Successor | GeForce 700 | — |
Clocks
| Base clock | 823 MHz | — |
|---|---|---|
| Boost clock | 888 MHz | — |
| Memory clock | 1400 MHz 5.6 Gbps effective | 1250 MHz 5 Gbps effective |
| GPU clock | — | 719 MHz |
Memory Configuration
| Memory size | 1536 MB | 2 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 192 bit | 256 bit |
| Bandwidth | 134.4 GB/s | 160.0 GB/s |
Render Configuration
| Shading units | 1152 | 1536 |
|---|---|---|
| TMUs | 96 | 128 |
| ROPs | 24 | 32 |
| SMX count | 6 | 8 |
| Cache L1 | 16 KB (per SMX) | 16 KB (per SMX) |
| Cache L2 | 384 KB | 512 KB |
Performance
| Pixel rate | 21.31 GPixel/s | 23.01 GPixel/s |
|---|---|---|
| Texture rate | 85.25 GTexel/s | 92.03 GTexel/s |
| FP32 (float) performance | 2.046 TFLOPS | 2.209 TFLOPS |
| FP64 (double) performance | 85.25 GFLOPS (1:24) | 92.03 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | Dual-slot | — |
|---|---|---|
| Length | 241 mm 9.5 inches | — |
| TDP | 130 W | 122 W |
| Suggested PSU | 300 W | — |
| Outputs | 2x DVI1x HDMI1x DisplayPort | No outputs |
| Power connectors | 1x 6-pin | — |
| Board number | P2004 | — |
API Support & Features
| DirectX | 12 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 3.0 | 3.0 |
| Vulkan | 1.1 | 1.1 |
| CUDA | 3.0 | 3.0 |
| Shader model | 5.1 | 5.1 |
Other Features
Mobile graphics
| Release date | — | Oct 23rd, 2012 |
|---|---|---|
| Generation | — | GeForce 600M |
| Production | — | End-of-life |
| Interface | — | PCIe 3.0 x16 |
| Predecessor | — | GeForce 500M |
| Successor | — | GeForce 700M |
