GeForce GTX 660M vs GeForce 840M
Summary
GeForce GTX 660M
105%
GeForce 840M
100%
Relative performance
Reasons to consider GeForce GTX 660M |
Around 5% 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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications |
Reasons to consider GeForce 840M |
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Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications |
HWBench recommends GeForce GTX 660M
The GeForce GTX 660M is the better performing card based on the synthetic benchmarks used (1 benchmarks).
Core Configuration
| GeForce GTX 660M | | GeForce 840M | |
---|
GPU Name | GK107 (N13E-GE-A2) | vs | GM108 (N15S-GT) |
Fab Process | 28 nm | vs | 28 nm |
Die Size | 118 mm² | vs | 0 mm² |
Transistors | 1,270 million | vs | unknown |
Shaders | 384 | vs | 384 |
Compute Units | 2 | vs | 3 |
Core clock | 835 MHz | vs | 1029 MHz |
ROPs | 16 | vs | 8 |
TMUs | 32 | vs | 16 |
Memory Configuration
| GeForce GTX 660M | | GeForce 840M | |
---|
Memory Type | GDDR5 | vs | DDR3 |
Bus Width | 128 bit | vs | 64 bit |
Memory Speed | 1000 MHz
4000 MHz effective | vs | 1001 MHz
2002 MHz effective |
Memory Size | 1024 Mb | vs | 1024 Mb |
Additional details
| GeForce GTX 660M | | GeForce 840M | |
---|
TDP | 50 watts | vs | 33 watts |
Release Date | 22 Mar 2012 | vs | 12 Mar 2014 |
GeForce GTX 660M
6.68 GP/s
GeForce 840M
8.23 GP/s
GigaPixels - higher is better
GeForce GTX 660M
26.72 GT/s
GeForce 840M
16.46 GT/s
GigaTexels - higher is better
GeForce GTX 660M
64.00 GB/s
GeForce 840M
16.02 GB/s
GB/s - higher is better
GeForce GTX 660M
641.30 GFLOPs
GeForce 840M
790.30 GFLOPs
GFLOPs - higher is better
GeForce GTX 660M
2570
GeForce 840M
2430
Points (higher is better)