Key Differences
In short — Radeon HD 7990 outperforms GeForce GT 640M on the selected game parameters. We do not have the prices of both CPUs to compare value. The better performing Radeon HD 7990 is 398 days newer than GeForce GT 640M.
Advantages of NVIDIA GeForce GT 640M
- Consumes up to 91% less energy than AMD Radeon HD 7990 - 32 vs 375 Watts
Advantages of AMD Radeon HD 7990
- Performs up to 20% better in Sea of Thieves than GeForce GT 640M - 101 vs 84 FPS
- Up to 50% more VRAM memory than NVIDIA GeForce GT 640M - 3 vs 2 GB
Sea of Thieves
Resolution
1920 x 1080
Game Graphics
Mythical
TOP 5 Games
Resolution
1920 x 1080
Game Graphics
Mythical
GeForce GT 640M
Mobile • Mar 22nd, 2012
Radeon HD 7990
Desktop • Apr 24th, 2013
Theoretical Performance
NVIDIA GeForce GT 640M | vs | AMD Radeon HD 7990 |
|---|---|---|
| Mar 22nd, 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 |
| 625 MHz | Base Clock Speed | 950 MHz |
| Not Available | Boost Clock Speed | 1000 MHz |
| 900 MHz | Memory Clock Speed | 1500 MHz |
