NVIDIA GeForce 8600 GTS vs NVIDIA GeForce GT 640
Graphics Processor
| GPU model | G84 | GK107 |
|---|---|---|
| GPU variant | G84-400-A2 | 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 |
Graphics Card
| Release date | Apr 17th, 2007 | Jun 5th, 2012 |
|---|---|---|
| Generation | GeForce 8 | GeForce 600 |
| Production | End-of-life | End-of-life |
| Launch price | 199 USD | 99 USD |
| Interface | PCIe 1.0 x16 | PCIe 3.0 x16 |
| Reviews | 183 in our database | — |
| Predecessor | GeForce 7 PCIe | GeForce 500 |
| Successor | GeForce 9 | GeForce 700 |
Clocks
| GPU clock | 675 MHz | 902 MHz |
|---|---|---|
| Shader clock | 1450 MHz | — |
| Memory clock | 1000 MHz 2 Gbps effective | 891 MHz 1782 Mbps effective |
Memory Configuration
| Memory size | 256 MB | 2 GB |
|---|---|---|
| Memory type | GDDR3 | DDR3 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 32.00 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 | 5.400 GPixel/s | 7.216 GPixel/s |
|---|---|---|
| Texture rate | 10.80 GTexel/s | 28.86 GTexel/s |
| FP32 (float) performance | 92.80 GFLOPS | 692.7 GFLOPS |
| FP64 (double) performance | — | 28.86 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| Length | 198 mm 7.8 inches | 145 mm 5.7 inches |
| TDP | 60 W | 65 W |
| Suggested PSU | 250 W | 250 W |
| Outputs | 2x DVI1x S-Video | 1x DVI1x HDMI1x DisplayPort |
| Power connectors | 1x 6-pin | None |
| Board number | P401 | 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 |
