Key Differences
In short — Radeon HD 7990 outperforms GeForce GTX 660M 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 GTX 660M.
Advantages of NVIDIA GeForce GTX 660M
- Consumes up to 87% less energy than AMD Radeon HD 7990 - 50 vs 375 Watts
Advantages of AMD Radeon HD 7990
- Performs up to 23% better in World of Tanks than GeForce GTX 660M - 128 vs 104 FPS
- Up to 200% more VRAM memory than NVIDIA GeForce GTX 660M - 3 vs 1 GB
World of Tanks
Resolution
1920 x 1080
Game Graphics
Ultra
TOP 5 Games
Resolution
1920 x 1080
Game Graphics
Ultra
GeForce GTX 660M
Mobile • Mar 22nd, 2012
Radeon HD 7990
Desktop • Apr 24th, 2013
Theoretical Performance
GeForce GTX 660M
Mobile • Mar 22nd, 2012
Pixel Fillrate
7.6 GPixel/s
23.75%
Texel Fillrate
30.4 GTexel/s
23.75%
NVIDIA GeForce GTX 660M | 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 |
| 1 GB | Memory | 3 GB |
| GDDR5 | Type | GDDR5 |
| 128-bit | Bus | 384-bit |
| 64 GB/s | Bandwidth | 288 GB/s |
| 835 MHz | Base Clock Speed | 950 MHz |
| 950 MHz | Boost Clock Speed | 1000 MHz |
| 1000 MHz | Memory Clock Speed | 1500 MHz |
