Radeon HD 3870 X2 vs GeForce GT 640
Summary
Radeon HD 3870 X2
112%
GeForce GT 640
100%
Relative performance
Reasons to consider Radeon HD 3870 X2 |
| Around 12% higher average synthetic performance. |
| Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications |
Reasons to consider GeForce GT 640 |
| 100 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 3870 X2 . |
| This is a much newer product, it might have better long term support. |
| Supports PhysX |
| Supports G-Sync |
| Supports ShadowPlay (allows game streaming/recording with minimum performance penalty) |
| Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications |
HWBench recommends Radeon HD 3870 X2
The Radeon HD 3870 X2 is the better performing card based on the synthetic benchmarks used (1 benchmarks).
Core Configuration
| Radeon HD 3870 X2 | | GeForce GT 640 | |
|---|
| GPU Name | R680 () | vs | GK107 (GK107-300-A2) |
| Fab Process | 55 nm | vs | 28 nm |
| Die Size | 192 mm² | vs | 118 mm² |
| Transistors | 666 million | vs | 1,270 million |
| Shaders | 320 | vs | 384 |
| Compute Units | 4 | vs | 2 |
| Core clock | 825 MHz | vs | 902 MHz |
| ROPs | 16 | vs | 16 |
| TMUs | 16 | vs | 32 |
Memory Configuration
| Radeon HD 3870 X2 | | GeForce GT 640 | |
|---|
| Memory Type | GDDR3 | vs | DDR3 |
| Bus Width | 256 bit x2 | vs | 128 bit |
| Memory Speed | 901 MHz
1802 MHz effective | vs | 891 MHz
1782 MHz effective |
| Memory Size | 512 Mb | vs | 2048 Mb |
Additional details
| Radeon HD 3870 X2 | | GeForce GT 640 | |
|---|
| TDP | 165 watts | vs | 65 watts |
| Release Date | 26 Jan 2008 | vs | 5 Jun 2012 |
Radeon HD 3870 X2
26.40 GP/s
GeForce GT 640
7.22 GP/s
GigaPixels - higher is better
Radeon HD 3870 X2
26.40 GT/s
GeForce GT 640
28.90 GT/s
GigaTexels - higher is better
Radeon HD 3870 X2
115.40 GB/s
GeForce GT 640
28.50 GB/s
GB/s - higher is better
Radeon HD 3870 X2
1056.00 GFLOPs
GeForce GT 640
692.70 GFLOPs
GFLOPs - higher is better
Radeon HD 3870 X2
2470
GeForce GT 640
2190
Points (higher is better)