Key Differences
In short — Radeon HD 7870 XT 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 7870 XT is 49 days newer than GeForce GT 645M.
Advantages of NVIDIA GeForce GT 645M
- Consumes up to 83% less energy than AMD Radeon HD 7870 XT - 32 vs 185 Watts
Advantages of AMD Radeon HD 7870 XT
- Performs up to 13% better in DOOM Eternal than GeForce GT 645M - 147 vs 130 FPS
DOOM Eternal
Resolution
1920 x 1080
Game Graphics
Nightmare
TOP 5 Games
Resolution
1920 x 1080
Game Graphics
Nightmare
GeForce GT 645M
Mobile • Oct 1st, 2012
Radeon HD 7870 XT
Desktop • Nov 19th, 2012
Theoretical Performance
GeForce GT 645M
Mobile • Oct 1st, 2012
Pixel Fillrate
5.672 GPixel/s
18%
Texel Fillrate
22.69 GTexel/s
24%
Radeon HD 7870 XT
Desktop • Nov 19th, 2012
Pixel Fillrate
31.2 GPixel/s
100%
Texel Fillrate
93.6 GTexel/s
100%
NVIDIA GeForce GT 645M | vs | AMD Radeon HD 7870 XT |
|---|---|---|
| Oct 1st, 2012 | Release Date | Nov 19th, 2012 |
| GeForce 600M | Generation | Southern Islands |
| Not Available | MSRP | $270 |
| None | Outputs | 1x DVI, 1x HDMI, 2x mini-DisplayPort |
| None | Power Connectors | 2x 6-pin |
Mobile | Segment | Desktop |
| 2 GB | Memory | 2 GB |
| DDR3 | Type | GDDR5 |
| 128-bit | Bus | 256-bit |
| 28.8 GB/s | Bandwidth | 192 GB/s |
| 709 MHz | Base Clock Speed | 925 MHz |
| Not Available | Boost Clock Speed | 975 MHz |
| 900 MHz | Memory Clock Speed | 1500 MHz |
