Key Differences
In short — Radeon HD 7990 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 7990 is 205 days newer than GeForce GT 645M.
Advantages of NVIDIA GeForce GT 645M
- Consumes up to 91% less energy than AMD Radeon HD 7990 - 32 vs 375 Watts
Advantages of AMD Radeon HD 7990
- Performs up to 8% better in Far Cry 5 than GeForce GT 645M - 104 vs 96 FPS
- Up to 50% more VRAM memory than NVIDIA GeForce GT 645M - 3 vs 2 GB
Far Cry 5
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 7990
Desktop • Apr 24th, 2013
Theoretical Performance
GeForce GT 645M
Mobile • Oct 1st, 2012
Pixel Fillrate
5.672 GPixel/s
17%
Texel Fillrate
22.69 GTexel/s
17%
NVIDIA GeForce GT 645M | vs | AMD Radeon HD 7990 |
|---|---|---|
| Oct 1st, 2012 | Release Date | Apr 24th, 2013 |
| GeForce 600M | Generation | Southern Islands |
| Not Available | MSRP | $999 |
| None | Outputs | 1x DVI, 4x mini-DisplayPort |
| None | Power Connectors | 2x 8-pin |
Mobile | Segment | Desktop |
| 2 GB | Memory | 3 GB |
| DDR3 | Type | GDDR5 |
| 128-bit | Bus | 384-bit |
| 28.8 GB/s | Bandwidth | 288 GB/s |
| 709 MHz | Base Clock Speed | 950 MHz |
| Not Available | Boost Clock Speed | 1000 MHz |
| 900 MHz | Memory Clock Speed | 1500 MHz |
