NVIDIA GeForce GT 645 OEM vs NVIDIA GeForce GTX 765M
Graphics Processor
| GPU model | GF114 | GK106 |
|---|---|---|
| Architecture | Fermi 2.0 | Kepler |
| Foundry | TSMC | TSMC |
| Manufacturing process | 40 nm | 28 nm |
| Number of transistors | 1,950 million | 2,540 million |
| Die size | 332 mm² | 221 mm² |
| GPU variant | — | N14E-GE-B-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 | — |
|---|---|---|
| Shader clock | 1552 MHz | — |
| Memory clock | 957 MHz 3.8 Gbps effective | 1002 MHz 4 Gbps effective |
| Base clock | — | 797 MHz |
| Boost clock | — | 863 MHz |
Memory Configuration
| Memory size | 1024 MB | 2 GB |
|---|---|---|
| Memory type | GDDR5 | GDDR5 |
| Memory bus width | 192 bit | 128 bit |
| Bandwidth | 91.87 GB/s | 64.13 GB/s |
Render Configuration
| Shading units | 288 | 768 |
|---|---|---|
| TMUs | 48 | 64 |
| ROPs | 24 | 16 |
| SM count | 6 | — |
| Cache L1 | 64 KB (per SM) | 16 KB (per SMX) |
| Cache L2 | 384 KB | 256 KB |
| SMX count | — | 4 |
Performance
| Pixel rate | 9.312 GPixel/s | 13.81 GPixel/s |
|---|---|---|
| Texture rate | 37.25 GTexel/s | 55.23 GTexel/s |
| FP32 (float) performance | 894.0 GFLOPS | 1,326 GFLOPS |
| FP64 (double) performance | 74.50 GFLOPS (1:12) | 55.23 GFLOPS (1:24) |
Dimensions & Outputs
| Slot width | Dual-slot | MXM Module |
|---|---|---|
| Length | 210 mm 8.3 inches | — |
| TDP | 102 W | 75 W |
| Suggested PSU | 300 W | — |
| Outputs | 2x DVI1x mini-HDMI | No outputs |
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 |
Other Features
Mobile graphics
| Release date | — | May 30th, 2013 |
|---|---|---|
| Generation | — | GeForce 700M |
| Production | — | End-of-life |
| Interface | — | MXM-B (3.0) |
| Predecessor | — | GeForce 600M |
| Successor | — | GeForce 800M |
