GeForce GT 640 GDDR5 vs GeForce GTX 650
Summary
GeForce GT 640 GDDR5
100%
GeForce GTX 650
126%
Relative performance
Reasons to consider GeForce GT 640 GDDR5 |
| 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| Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications |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 GeForce GTX 650 |
| Around 26% higher average synthetic performance. |
| 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| Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications |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 GeForce GTX 650
The GeForce GTX 650 is the better performing card based on the synthetic benchmarks used (1 benchmarks).
Core Configuration
| GeForce GT 640 GDDR5 | | GeForce GTX 650 | |
|---|
| GPU Name | GK208 (GK208-400-A1) | vs | GK106 () |
| Fab Process | 28 nm | vs | 28 nm |
| Die Size | 87 mm² | vs | 221 mm² |
| Transistors | unknown | vs | 2,540 million |
| Shaders | 384 | vs | 384 |
| Compute Units | 2 | vs | 2 |
| Core clock | 1046 MHz | vs | 1058 MHz |
| ROPs | 8 | vs | 16 |
| TMUs | 16 | vs | 32 |
Memory Configuration
| GeForce GT 640 GDDR5 | | GeForce GTX 650 | |
|---|
| Memory Type | GDDR5 | vs | GDDR5 |
| Bus Width | 64 bit | vs | 128 bit |
| Memory Speed | 1252 MHz
5008 MHz effective | vs | 1250 MHz
5000 MHz effective |
| Memory Size | 1024 Mb | vs | 1024 Mb |
Additional details
| GeForce GT 640 GDDR5 | | GeForce GTX 650 | |
|---|
| TDP | 49 watts | vs | 65 watts |
| Release Date | 29 May 2013 | vs | 27 Nov 2013 |
GeForce GT 640 GDDR5
8.37 GP/s
GeForce GTX 650
8.46 GP/s
GigaPixels - higher is better
GeForce GT 640 GDDR5
16.70 GT/s
GeForce GTX 650
33.90 GT/s
GigaTexels - higher is better
GeForce GT 640 GDDR5
40.10 GB/s
GeForce GTX 650
80.00 GB/s
GB/s - higher is better
GeForce GT 640 GDDR5
803.30 GFLOPs
GeForce GTX 650
812.50 GFLOPs
GFLOPs - higher is better
GeForce GT 640 GDDR5
2280
GeForce GTX 650
2880
Points (higher is better)