Key Differences
In short — Radeon HD 7790 outperforms GeForce GT 645M on the selected game parameters. We do not have the prices of both CPUs to compare value. The better performing Radeon HD 7790 is 172 days newer than GeForce GT 645M.
Advantages of NVIDIA GeForce GT 645M
- Consumes up to 62% less energy than AMD Radeon HD 7790 - 32 vs 85 Watts
- Up to 100% more VRAM memory than AMD Radeon HD 7790 - 2 vs 1 GB
Advantages of AMD Radeon HD 7790
- Performs up to 9% better in Grand Theft Auto V than GeForce GT 645M - 76 vs 70 FPS
Grand Theft Auto V
Resolution
1920 x 1080
Game Graphics
Ultra
TOP 5 Games
Resolution
1920 x 1080
Game Graphics
Ultra
GeForce GT 645M
Mobile • Oct 1st, 2012
Radeon HD 7790
Desktop • Mar 22nd, 2013
Theoretical Performance
GeForce GT 645M
Mobile • Oct 1st, 2012
Pixel Fillrate
5.672 GPixel/s
35%
Texel Fillrate
22.69 GTexel/s
40%
NVIDIA GeForce GT 645M | vs | AMD Radeon HD 7790 |
|---|---|---|
| Oct 1st, 2012 | Release Date | Mar 22nd, 2013 |
| GeForce 600M | Generation | Southern Islands |
| Not Available | MSRP | $149 |
| None | Outputs | 1x DVI, 1x HDMI, 2x mini-DisplayPort |
| None | Power Connectors | 1x 6-pin |
Mobile | Segment | Desktop |
2 GB | Memory | 1 GB |
| DDR3 | Type | GDDR5 |
| 128-bit | Bus | 128-bit |
| 28.8 GB/s | Bandwidth | 96 GB/s |
| 709 MHz | Base Clock Speed | 1000 MHz |
| Not Available | Boost Clock Speed | Not Available |
| 900 MHz | Memory Clock Speed | 1500 MHz |
