GeForce GT 640 vs Radeon HD 6490
Summary
Reasons to consider GeForce GT 640 |
| This is a much newer product, it might have better long term support. |
| Higher theoretical gaming performance, based on specifications. |
| 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| Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications |
Reasons to consider Radeon HD 6490 |
| Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications |
HWBench recommends GeForce GT 640
Based on theoretical specifications.
Core Configuration
| GeForce GT 640 | | Radeon HD 6490 | |
|---|
| GPU Name | GK107 (GK107-300-A2) | vs | Redwood (Redwood LE) |
| Fab Process | 28 nm | vs | 40 nm |
| Die Size | 118 mm² | vs | 104 mm² |
| Transistors | 1,270 million | vs | 627 million |
| Shaders | 384 | vs | 320 |
| Compute Units | 2 | vs | 4 |
| Core clock | 902 MHz | vs | 550 MHz |
| ROPs | 16 | vs | 8 |
| TMUs | 32 | vs | 16 |
Memory Configuration
| GeForce GT 640 | | Radeon HD 6490 | |
|---|
| Memory Type | DDR3 | vs | DDR2 |
| Bus Width | 128 bit | vs | 128 bit |
| Memory Speed | 891 MHz
1782 MHz effective | vs | 500 MHz
1000 MHz effective |
| Memory Size | 2048 Mb | vs | 1024 Mb |
Additional details
| GeForce GT 640 | | Radeon HD 6490 | |
|---|
| TDP | 65 watts | vs | 39 watts |
| Release Date | 5 Jun 2012 | vs | 4 Jul 2011 |
GeForce GT 640
7.22 GP/s
Radeon HD 6490
4.40 GP/s
GigaPixels - higher is better
GeForce GT 640
28.90 GT/s
Radeon HD 6490
8.80 GT/s
GigaTexels - higher is better
GeForce GT 640
28.50 GB/s
Radeon HD 6490
16.00 GB/s
GB/s - higher is better
GeForce GT 640
692.70 GFLOPs
Radeon HD 6490
352.00 GFLOPs
GFLOPs - higher is better