NVIDIA GeForce GT 640M Mac Edition vs NVIDIA GeForce GT 650M Mac Edition
Graphics Processor
| GPU model | GK107 | GK107 |
|---|---|---|
| GPU variant | N13P-GS | N13P-GT-W-A2 |
| Architecture | Kepler | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 28 nm | 28 nm |
| Number of transistors | 1,270 million | 1,270 million |
| Die size | 118 mm² | 118 mm² |
Mobile graphics
| Release date | Feb 3rd, 2013 | Jul 12th, 2012 |
|---|---|---|
| Generation | GeForce 600M | GeForce 600M |
| Production | End-of-life | End-of-life |
| Interface | PCIe 3.0 x16 | PCIe 3.0 x16 |
| Reviews | 2 in our database | — |
| Predecessor | GeForce 500M | GeForce 500M |
| Successor | GeForce 700M | GeForce 700M |
Clocks
| GPU clock | 745 MHz | 900 MHz |
|---|---|---|
| Memory clock | 1250 MHz 5 Gbps effective | 1254 MHz 5 Gbps effective |
Memory Configuration
| Memory size | 512 MB | 512 MB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 64 bit | 128 bit |
| Bandwidth | 40.00 GB/s | 80.26 GB/s |
Render Configuration
| Shading units | 384 | 384 |
|---|---|---|
| TMUs | 32 | 32 |
| ROPs | 8 | 16 |
| SMX count | 2 | 2 |
| Cache L1 | 16 KB (per SMX) | 16 KB (per SMX) |
| Cache L2 | 128 KB | 256 KB |
Performance
| Pixel rate | 5.960 GPixel/s | 7.200 GPixel/s |
|---|---|---|
| Texture rate | 23.84 GTexel/s | 28.80 GTexel/s |
| FP32 (float) performance | 572.2 GFLOPS | 691.2 GFLOPS |
| FP64 (double) performance | 23.84 GFLOPS (1:24) | 28.80 GFLOPS (1:24) |
Dimensions & Outputs
| TDP | 32 W | 45 W |
|---|---|---|
| Outputs | No outputs | No outputs |
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 |
