NVIDIA GeForce GT 645M vs ATI Radeon HD 4750
What is the difference between NVIDIA GeForce GT 645M and ATI Radeon HD 4750. Find out which graphics card has better performance.
Graphics Processor (GPU)
| GK107 | GPU Name | RV740 |
| N13P-GS | Model number | RV740 PRO |
| Kepler | Architecture | TeraScale |
| TSMC | Foundry | TSMC |
| 28 nm | Process Size | 40 nm |
| 1,270 million | Transistors | 826 million |
| 118 mm² | Die Size | 137 mm² |
Graphics Card
| Oct 1st, 2012 | Release Date | Sep 9th, 2009 |
| GeForce 600M | Family | Radeon R700 (HD 4700) |
| End-of-life | Production | End-of-life |
| GeForce 500M | Predecessor | Radeon R600 |
| PCIe 3.0 x16 | Bus Interface | PCIe 2.0 x16 |
Memory
| 2 GB | Memory Size | 512 MB |
| DDR3 | Memory Type | GDDR5 |
| 128 bit | Memory Bus | 128 bit |
| 28.80 GB/s | Bandwidth | 51.20 GB/s |
Performance
| 5.672 GPixel/s | Pixel fillrate | 11.68 GPixel/s |
| 22.69 GTexel/s | Texture fillrate | 23.36 GTexel/s |
| 544.5 GFLOPS | FP32 (float) performance | 934.4 GFLOPS |
| 22.69 GFLOPS (1:24) | FP64 (double) performance | 186.9 GFLOPS (1:5) |
Clock Speeds
| 900 MHz 1800 Mbps effective | Memory Clock | 800 MHz 3.2 Gbps effective |
| 709 MHz | GPU Clock | 730 MHz |
Render Config
| 384 | Shading Units | 640 |
| 32 | TMUs | 32 |
| 16 | ROPs | 16 |
| 16 KB (per SMX) | L1 Cache | 16 KB (per CU) |
| 256 KB | L2 Cache | 128 KB |
Board Design
| 32 W | Thermal design power (TDP) | 100 W |
| No outputs | Display Connectors | 2x DVI 1x S-Video |
API support
| 12 (11_0) | DirectX | 10.1 (10_1) |
| 4.6 | OpenGL | 3.3 |
| 3.0 | OpenCL | 1.1 |
| 1.1 | Vulkan | N/A |
| 5.1 | Shader Model | 4.1 |