NVIDIA GeForce GT 630 vs NVIDIA GeForce GT 640
Graphics Processor
| GPU model | GF108 | GK107 |
|---|---|---|
| GPU variant | GF108-400-A1 | GK107-300-A2 |
| Architecture | Fermi | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 28 nm |
| Number of transistors | 585 million | 1,270 million |
| Die size | 116 mm² | 118 mm² |
Graphics Card
| Release date | May 15th, 2012 | Jun 5th, 2012 |
|---|---|---|
| Generation | GeForce 600 | GeForce 600 |
| Production | End-of-life | End-of-life |
| Interface | PCIe 2.0 x16 | PCIe 3.0 x16 |
| Predecessor | GeForce 500 | GeForce 500 |
| Successor | GeForce 700 | GeForce 700 |
| Launch price | — | 99 USD |
Clocks
| GPU clock | 810 MHz | 902 MHz |
|---|---|---|
| Shader clock | 1620 MHz | — |
| Memory clock | 900 MHz 1800 Mbps effective | 891 MHz 1782 Mbps effective |
Memory Configuration
| Memory size | 1024 MB | 2 GB |
|---|---|---|
| Memory type | DDR3 | DDR3 |
| Memory bus width | 128 bit | 128 bit |
| Bandwidth | 28.80 GB/s | 28.51 GB/s |
Render Configuration
| Shading units | 96 | 384 |
|---|---|---|
| TMUs | 16 | 32 |
| ROPs | 4 | 16 |
| SM count | 2 | — |
| Cache L1 | 64 KB (per SM) | 16 KB (per SMX) |
| Cache L2 | 256 KB | 256 KB |
| SMX count | — | 2 |
Performance
| Pixel rate | 3.240 GPixel/s | 7.216 GPixel/s |
|---|---|---|
| Texture rate | 12.96 GTexel/s | 28.86 GTexel/s |
| FP32 (float) performance | 311.0 GFLOPS | 692.7 GFLOPS |
| FP64 (double) performance | 25.92 GFLOPS (1:12) | 28.86 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | Single-slot | Single-slot |
|---|---|---|
| Length | 145 mm 5.7 inches | 145 mm 5.7 inches |
| TDP | 65 W | 65 W |
| Suggested PSU | 250 W | 250 W |
| Outputs | 1x DVI1x HDMI1x VGA | 1x DVI1x HDMI1x DisplayPort |
| Power connectors | None | None |
| Board number | P1071 | P2011 |
API Support & Features
| DirectX | 12 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.1 | 3.0 |
| Vulkan | — | 1.1 |
| CUDA | 2.1 | 3.0 |
| Shader model | 5.1 | 5.1 |
