NVIDIA GeForce GTX 660M vs NVIDIA GeForce GTX 880M
Graphics Processor
| GPU model | GK107 | GK104 |
|---|---|---|
| GPU variant | N13E-GE-A2 | N15E-GX-A2 |
| Architecture | Kepler | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 1,270 million | 3,540 million |
| Die size | 118 mm² | 294 mm² |
Mobile graphics
| Release date | Mar 22nd, 2012 | Mar 12th, 2014 |
|---|---|---|
| Generation | GeForce 600M | GeForce 800M |
| Production | End-of-life | End-of-life |
| Interface | MXM-B (3.0) | MXM-B (3.0) |
| Predecessor | GeForce 500M | GeForce 700M |
| Successor | GeForce 700M | GeForce 900M |
| Reviews | — | 1 in our database |
Clocks
| Base clock | 835 MHz | 954 MHz |
|---|---|---|
| Boost clock | 950 MHz | 993 MHz |
| Memory clock | 1000 MHz 4 Gbps effective | 1250 MHz 5 Gbps effective |
Memory Configuration
| Memory size | 1024 MB | 8 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 128 bit | 256 bit |
| Bandwidth | 64.00 GB/s | 160.0 GB/s |
Render Configuration
| Shading units | 384 | 1536 |
|---|---|---|
| TMUs | 32 | 128 |
| ROPs | 16 | 32 |
| SMX count | 2 | 8 |
| Cache L1 | 16 KB (per SMX) | 16 KB (per SMX) |
| Cache L2 | 256 KB | 512 KB |
Performance
| Pixel rate | 7.600 GPixel/s | 31.78 GPixel/s |
|---|---|---|
| Texture rate | 30.40 GTexel/s | 127.1 GTexel/s |
| FP32 (float) performance | 729.6 GFLOPS | 3.050 TFLOPS |
| FP64 (double) performance | 30.40 GFLOPS (1:24) | 127.1 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | MXM Module | MXM Module |
|---|---|---|
| TDP | 50 W | 122 W |
| Outputs | No outputs | No outputs |
| Power connectors | — | None |
| Board number | — | P2053 SKU 2 |
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 |
