GeForce GT 640 OEM Rebrand vs Radeon HD 7970 GHz Edition
Summary
Reasons to consider GeForce GT 640 OEM Rebrand |
| 225 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 7970 GHz Edition . |
| Supports PhysX |
| Based on an outdated architecture (Nvidia Fermi), there are no performance optimizations for current games and applications |
Reasons to consider Radeon HD 7970 GHz Edition |
| Higher theoretical gaming performance, based on specifications. |
| Supports Direct3D 12 Async Compute |
| Supports ReLive (allows game streaming/recording with minimum performance penalty) |
| Supports Mantle |
| Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications |
HWBench recommends Radeon HD 7970 GHz Edition
Based on theoretical specifications.
Core Configuration
| GeForce GT 640 OEM Rebrand | | Radeon HD 7970 GHz Edition | |
|---|
| GPU Name | GF116 (GF116-150-A1) | vs | Tahiti (Tahiti XT2) |
| Fab Process | 40 nm | vs | 28 nm |
| Die Size | 238 mm² | vs | 352 mm² |
| Transistors | 1,170 million | vs | 4,313 million |
| Shaders | 144 | vs | 2048 |
| Compute Units | 3 | vs | 32 |
| Core clock | 720 MHz | vs | 1000 MHz |
| ROPs | 24 | vs | 32 |
| TMUs | 24 | vs | 128 |
Memory Configuration
| GeForce GT 640 OEM Rebrand | | Radeon HD 7970 GHz Edition | |
|---|
| Memory Type | DDR3 | vs | GDDR5 |
| Bus Width | 192 bit | vs | 384 bit |
| Memory Speed | 800 MHz
1600 MHz effective | vs | 1500 MHz
6000 MHz effective |
| Memory Size | 1536 Mb | vs | 3072 Mb |
Additional details
| GeForce GT 640 OEM Rebrand | | Radeon HD 7970 GHz Edition | |
|---|
| TDP | 75 watts | vs | 300 watts |
| Release Date | 24 Apr 2012 | vs | 22 Jun 2012 |
GigaPixels - higher is better
GigaTexels - higher is better
GFLOPs - higher is better