GeForce GT 640M vs GeForce GT 750M

GeForce GT 640M
Memory: 2048Mb DDR3MOBILE
Release date: 22 Mar 2012
GeForce GT 640M
GeForce GT 750M
Memory: 2048Mb GDDR5MOBILE
Release date: 9 Jan 2013
GeForce GT 750M

Summary

Synthetic performance index

  • GeForce GT 640M
    100%
  • GeForce GT 750M
    139%

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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications.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 GT 750M

This is a much newer product, it might have better long term support.
Around 39% 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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications.

GeForce GT 750M

HWBench recommends GeForce GT 750M

The GeForce GT 750M is the better performing card based on the synthetic benchmarks used (1 benchmarks).


Specifications

Core Configuration

GeForce GT 640MGeForce GT 750M
GPU NameGK107 (N13P-GS)vsGK107 (N14P-GT)
Fab Process28 nmvs28 nm
Die Size118 mm²vs118 mm²
Transistors1,270 millionvs1,270 million
Shaders384vs384
Compute Units2vs2
Core clock625 MHzvs941 MHz
ROPs16vs16
TMUs32vs32

Memory Configuration

GeForce GT 640MGeForce GT 750M
Memory TypeDDR3vsGDDR5
Bus Width128 bitvs128 bit
Memory Speed900 MHz
1800 MHz effective
vs1000 MHz
4000 MHz effective
Memory Size2048 Mbvs2048 Mb

Additional details

GeForce GT 640MGeForce GT 750M
TDP32 wattsvs50 watts
Release Date22 Mar 2012vs9 Jan 2013

Raw Performance comparison

Pixel Rate

  • GeForce GT 640M
    5.00 GP/s
  • GeForce GT 750M
    7.53 GP/s

GigaPixels - higher is better

Texel Rate

  • GeForce GT 640M
    20.00 GT/s
  • GeForce GT 750M
    30.11 GT/s

GigaTexels - higher is better

Memory bandwidth

  • GeForce GT 640M
    28.80 GB/s
  • GeForce GT 750M
    64.00 GB/s

GB/s - higher is better

Single precision performance

  • GeForce GT 640M
    480.00 GFLOPs
  • GeForce GT 750M
    722.70 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • GeForce GT 640M
    1770
  • GeForce GT 750M
    2470

Points (higher is better)

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