NVIDIA GeForce 8800 GTS 640 vs NVIDIA GeForce GT 720A
Graphics Processor
| GPU model | G80 | GF117 |
|---|---|---|
| GPU variant | G80-100-K0-A2 | N14M-GE |
| Architecture | Tesla | Fermi 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 90 nm | 28 nm |
| Number of transistors | 681 million | 585 million |
| Die size | 484 mm² | 116 mm² |
Graphics Card
| Release date | Nov 8th, 2006 | — |
|---|---|---|
| Generation | GeForce 8 | — |
| Production | End-of-life | — |
| Launch price | 449 USD | — |
| Interface | PCIe 1.0 x16 | — |
| Reviews | 403 in our database | — |
| Predecessor | GeForce 7 PCIe | — |
| Successor | GeForce 9 | — |
Clocks
| GPU clock | 513 MHz | 775 MHz |
|---|---|---|
| Shader clock | 1188 MHz | 1550 MHz |
| Memory clock | 792 MHz 1584 Mbps effective | 1001 MHz 2 Gbps effective |
Memory Configuration
| Memory size | 640 MB | 1024 MB |
|---|---|---|
| Memory type | GDDR3 | DDR3 |
| Memory bus width | 320 bit | 64 bit |
| Bandwidth | 63.36 GB/s | 16.02 GB/s |
Render Configuration
| Shading units | 96 | 96 |
|---|---|---|
| TMUs | 24 | 16 |
| ROPs | 20 | 8 |
| SM count | 12 | 2 |
| Cache L2 | 80 KB | 128 KB |
| Cache L1 | — | 64 KB (per SM) |
Performance
| Pixel rate | 10.26 GPixel/s | 3.100 GPixel/s |
|---|---|---|
| Texture rate | 24.62 GTexel/s | 12.40 GTexel/s |
| FP32 (float) performance | 228.1 GFLOPS | 297.6 GFLOPS |
| FP64 (double) performance | — | 24.80 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | Dual-slot | MXM Module |
|---|---|---|
| Length | 267 mm 10.5 inches | — |
| TDP | 143 W | 33 W |
| Suggested PSU | 300 W | — |
| Outputs | 2x DVI1x S-Video | No outputs |
| Power connectors | 1x 6-pin | — |
| Board number | P356 | — |
API Support & Features
| DirectX | 11.1 (10_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 3.3 | 4.6 |
| OpenCL | 1.1 (1.0) | 1.1 |
| Vulkan | — | — |
| CUDA | 1.0 | 2.1 |
| Shader model | 4.0 | 5.1 |
Other Features
Mobile graphics
| Release date | — | Jul 1st, 2014 |
|---|---|---|
| Generation | — | GeForce 700A |
| Production | — | End-of-life |
| Interface | — | PCIe 2.0 x16 |
| Predecessor | — | GeForce 600A |
| Successor | — | GeForce 800A |
