NVIDIA GeForce 8600M GT vs NVIDIA GeForce GT 640
Graphics Processor
| GPU model | G84 | GK107 |
|---|---|---|
| GPU variant | NB8P-GS | GK107-300-A2 |
| 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 | — |
|---|---|---|
| Generation | GeForce 8M (8000M) | — |
| Production | End-of-life | — |
| Interface | MXM-II | — |
| Predecessor | GeForce Go 7 | — |
| Successor | GeForce 9M | — |
Clocks
| GPU clock | 475 MHz | 902 MHz |
|---|---|---|
| Shader clock | 950 MHz | — |
| Memory clock | 700 MHz 1400 Mbps effective | 891 MHz 1782 Mbps effective |
Memory Configuration
| Memory size | 512 MB | 2 GB |
|---|---|---|
| Memory type | GDDR3 | DDR3 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 22.40 GB/s | 28.51 GB/s |
Render Configuration
| Shading units | 32 | 384 |
|---|---|---|
| TMUs | 16 | 32 |
| ROPs | 8 | 16 |
| SM count | 4 | — |
| Cache L2 | 32 KB | 256 KB |
| SMX count | — | 2 |
| Cache L1 | — | 16 KB (per SMX) |
Performance
| Pixel rate | 3.800 GPixel/s | 7.216 GPixel/s |
|---|---|---|
| Texture rate | 7.600 GTexel/s | 28.86 GTexel/s |
| FP32 (float) performance | 60.80 GFLOPS | 692.7 GFLOPS |
| FP64 (double) performance | — | 28.86 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | MXM Module | Single-slot |
|---|---|---|
| TDP | 20 W | 65 W |
| Outputs | No outputs | 1x DVI1x HDMI1x DisplayPort |
| Length | — | 145 mm 5.7 inches |
| Suggested PSU | — | 250 W |
| Power connectors | — | None |
| Board number | — | P2011 |
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 |
Other Features
Graphics Card
| Release date | — | Jun 5th, 2012 |
|---|---|---|
| Generation | — | GeForce 600 |
| Production | — | End-of-life |
| Launch price | — | 99 USD |
| Interface | — | PCIe 3.0 x16 |
| Predecessor | — | GeForce 500 |
| Successor | — | GeForce 700 |
