GeForce 940MX vs GeForce GT 640

GeForce 940MX
Memory: 2048Mb GDDR5MOBILE
Release date: 28 Jun 2016
GeForce 940MX
GeForce GT 640
Memory: 2048Mb DDR3DESKTOP
Release date: 5 Jun 2012
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).

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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications.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.


Specifications

Core Configuration

GeForce 940MXGeForce GT 640
GPU NameGM108 (N16S-GT1R)vsGK107 (GK107-300-A2)
Fab Process28 nmvs28 nm
Die Size0 mm²vs118 mm²
Transistorsunknownvs1,270 million
Shaders384vs384
Compute Units3vs2
Core clock795 MHzvs902 MHz
ROPs8vs16
TMUs24vs32

Memory Configuration

GeForce 940MXGeForce GT 640
Memory TypeGDDR5vsDDR3
Bus Width64 bitvs128 bit
Memory Speed1253 MHz
5012 MHz effective
vs891 MHz
1782 MHz effective
Memory Size2048 Mbvs2048 Mb

Additional details

GeForce 940MXGeForce GT 640
TDP23 wattsvs65 watts
Release Date28 Jun 2016vs5 Jun 2012

Raw Performance comparison

Pixel Rate

  • GeForce 940MX
    6.36 GP/s
  • GeForce GT 640
    7.22 GP/s

GigaPixels - higher is better

Texel Rate

  • GeForce 940MX
    19.08 GT/s
  • GeForce GT 640
    28.90 GT/s

GigaTexels - higher is better

Memory bandwidth

  • GeForce 940MX
    40.10 GB/s
  • GeForce GT 640
    28.50 GB/s

GB/s - higher is better

Single precision performance

  • GeForce 940MX
    610.60 GFLOPs
  • GeForce GT 640
    692.70 GFLOPs

GFLOPs - higher is better