GeForce 940MX vs GeForce GT 640
Summary
Reasons to consider GeForce 940MX |
| 42 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce GT 640 . |
| 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| Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications |
Reasons to consider GeForce GT 640 |
| 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| Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications |
No clear winner declared
We have no data to declare a winner at this time.
Core Configuration
| GeForce 940MX | | GeForce GT 640 | |
|---|
| GPU Name | GM108 (N16S-GT1R) | vs | GK107 (GK107-300-A2) |
| Fab Process | 28 nm | vs | 28 nm |
| Die Size | 0 mm² | vs | 118 mm² |
| Transistors | unknown | vs | 1,270 million |
| Shaders | 384 | vs | 384 |
| Compute Units | 3 | vs | 2 |
| Core clock | 795 MHz | vs | 902 MHz |
| ROPs | 8 | vs | 16 |
| TMUs | 24 | vs | 32 |
Memory Configuration
| GeForce 940MX | | GeForce GT 640 | |
|---|
| Memory Type | GDDR5 | vs | DDR3 |
| Bus Width | 64 bit | vs | 128 bit |
| Memory Speed | 1253 MHz
5012 MHz effective | vs | 891 MHz
1782 MHz effective |
| Memory Size | 2048 Mb | vs | 2048 Mb |
Additional details
| GeForce 940MX | | GeForce GT 640 | |
|---|
| TDP | 23 watts | vs | 65 watts |
| Release Date | 28 Jun 2016 | vs | 5 Jun 2012 |
GeForce 940MX
6.36 GP/s
GeForce GT 640
7.22 GP/s
GigaPixels - higher is better
GeForce 940MX
19.08 GT/s
GeForce GT 640
28.90 GT/s
GigaTexels - higher is better
GeForce 940MX
40.10 GB/s
GeForce GT 640
28.50 GB/s
GB/s - higher is better
GeForce 940MX
610.60 GFLOPs
GeForce GT 640
692.70 GFLOPs
GFLOPs - higher is better