GeForce GT 640M vs GeForce 920MX

GeForce GT 640M
Memory: 2048Mb DDR3 MOBILE
Release date: 22 Mar 2012
GeForce GT 640M
GeForce 920MX
Memory: 2048Mb DDR3 MOBILE
Release date: 1 Mar 2016
GeForce 920MX

Summary

Synthetic performance index

  • GeForce GT 640M
    102%
  • GeForce 920MX
    100%

Relative performance

Reasons to consider GeForce GT 640M

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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications.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 920MX

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).

No clear winner declared

We have no data to declare a winner at this time.


Specifications

Core Configuration

GeForce GT 640M GeForce 920MX
GPU Name GK107 (N13P-GS) vs GM108 (N16V-GMR1-S)
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 625 MHz vs 1072 MHz
ROPs 16 vs 8
TMUs 32 vs 24

Memory Configuration

GeForce GT 640M GeForce 920MX
Memory Type DDR3 vs DDR3
Bus Width 128 bit vs 64 bit
Memory Speed 900 MHz
1800 MHz effective
vs 900 MHz
1800 MHz effective
Memory Size 2048 Mb vs 2048 Mb

Additional details

GeForce GT 640M GeForce 920MX
TDP 32 watts vs 16 watts
Release Date 22 Mar 2012 vs 1 Mar 2016

Raw Performance comparison

Pixel Rate

  • GeForce GT 640M
    5.00 GP/s
  • GeForce 920MX
    8.58 GP/s

GigaPixels - higher is better

Texel Rate

  • GeForce GT 640M
    20.00 GT/s
  • GeForce 920MX
    25.73 GT/s

GigaTexels - higher is better

Memory bandwidth

  • GeForce GT 640M
    28.80 GB/s
  • GeForce 920MX
    14.40 GB/s

GB/s - higher is better

Single precision performance

  • GeForce GT 640M
    480.00 GFLOPs
  • GeForce 920MX
    823.30 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • GeForce GT 640M
    1770
  • GeForce 920MX
    1730

Points (higher is better)

Similar comparisons