NVIDIA GeForce 8600M GT vs NVIDIA GeForce GT 640M Mac Edition
Graphics Processor
| GPU model | G84 | GK107 |
|---|---|---|
| GPU variant | NB8P-GS | N13P-GS |
| Architecture | Tesla | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 80 nm | 28 nm |
| Number of transistors | 289 million | 1,270 million |
| Die size | 169 mm² | 118 mm² |
Mobile graphics
| Release date | May 1st, 2007 | Feb 3rd, 2013 |
|---|---|---|
| Generation | GeForce 8M (8000M) | GeForce 600M |
| Production | End-of-life | End-of-life |
| Interface | MXM-II | PCIe 3.0 x16 |
| Predecessor | GeForce Go 7 | GeForce 500M |
| Successor | GeForce 9M | GeForce 700M |
| Reviews | — | 2 in our database |
Clocks
| GPU clock | 475 MHz | 745 MHz |
|---|---|---|
| Shader clock | 950 MHz | — |
| Memory clock | 700 MHz 1400 Mbps effective | 1250 MHz 5 Gbps effective |
Memory Configuration
| Memory size | 512 MB | 512 MB |
|---|---|---|
| Memory type | GDDR3 | GDDR5 |
| Memory bus width | 128 bit | 64 bit |
| Bandwidth | 22.40 GB/s | 40.00 GB/s |
Render Configuration
| Shading units | 32 | 384 |
|---|---|---|
| TMUs | 16 | 32 |
| ROPs | 8 | 8 |
| SM count | 4 | — |
| Cache L2 | 32 KB | 128 KB |
| SMX count | — | 2 |
| Cache L1 | — | 16 KB (per SMX) |
Performance
| Pixel rate | 3.800 GPixel/s | 5.960 GPixel/s |
|---|---|---|
| Texture rate | 7.600 GTexel/s | 23.84 GTexel/s |
| FP32 (float) performance | 60.80 GFLOPS | 572.2 GFLOPS |
| FP64 (double) performance | — | 23.84 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | MXM Module | — |
|---|---|---|
| TDP | 20 W | 32 W |
| Outputs | No outputs | No outputs |
API Support & Features
| DirectX | 11.1 (10_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 | 3.0 |
| Vulkan | — | 1.1 |
| CUDA | 1.1 | 3.0 |
| Shader model | 4.0 | 5.1 |
