NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce GTX 580M
Graphics Processor
| GPU model | GF114 | GF114 |
|---|---|---|
| Architecture | Fermi 2.0 | Fermi 2.0 |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 40 nm |
| Number of transistors | 1,950 million | 1,950 million |
| Die size | 332 mm² | 332 mm² |
| GPU variant | — | N12E-GTX2-A1 |
Graphics Card
| Release date | Apr 24th, 2012 | — |
|---|---|---|
| Generation | GeForce 600 | — |
| Production | End-of-life | — |
| Interface | PCIe 2.0 x16 | — |
| Predecessor | GeForce 500 | — |
| Successor | GeForce 700 | — |
Clocks
| GPU clock | 776 MHz | 620 MHz |
|---|---|---|
| Shader clock | 1552 MHz | 1240 MHz |
| Memory clock | 957 MHz 3.8 Gbps effective | 750 MHz 3 Gbps effective |
Memory Configuration
| Memory size | 1024 MB | 2 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 192 bit | 256 bit |
| Bandwidth | 91.87 GB/s | 96.00 GB/s |
Render Configuration
| Shading units | 288 | 384 |
|---|---|---|
| TMUs | 48 | 64 |
| ROPs | 24 | 32 |
| SM count | 6 | 8 |
| Cache L1 | 64 KB (per SM) | 64 KB (per SM) |
| Cache L2 | 384 KB | 512 KB |
Performance
| Pixel rate | 9.312 GPixel/s | 9.920 GPixel/s |
|---|---|---|
| Texture rate | 37.25 GTexel/s | 39.68 GTexel/s |
| FP32 (float) performance | 894.0 GFLOPS | 952.3 GFLOPS |
| FP64 (double) performance | 74.50 GFLOPS (1:12) | 79.36 GFLOPS (1:12) |
Dimensions & Outputs
| Slot width | Dual-slot | MXM Module |
|---|---|---|
| Length | 210 mm 8.3 inches | — |
| TDP | 102 W | 100 W |
| Suggested PSU | 300 W | — |
| Outputs | 2x DVI1x mini-HDMI | No outputs |
| Power connectors | — | None |
| Board number | — | P1314 |
API Support & Features
| DirectX | 12 (11_0) | 12 (11_0) |
|---|---|---|
| OpenGL | 4.6 | 4.6 |
| OpenCL | 1.1 | 1.1 |
| Vulkan | — | — |
| CUDA | 2.1 | 2.1 |
| Shader model | 5.1 | 5.1 |
Other Features
Mobile graphics
| Release date | — | Jun 28th, 2011 |
|---|---|---|
| Generation | — | GeForce 500M |
| Production | — | End-of-life |
| Interface | — | MXM-B (3.0) |
| Reviews | — | 1 in our database |
| Predecessor | — | GeForce 400M |
| Successor | — | GeForce 600M |
