GeForce GT 640M vs GeForce GTX 760M

GeForce GT 640M
Memory: 2048Mb DDR3MOBILE
Release date: 22 Mar 2012
GeForce GT 640M
GeForce GTX 760M
Memory: 2048Mb GDDR5MOBILE
Release date: 30 May 2013
GeForce GTX 760M

Summary

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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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 GTX 760M

This is a much newer product, it might have better long term support.
Higher theoretical gaming performance, based on specifications.
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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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 GTX 760M

HWBench recommends GeForce GTX 760M

Based on theoretical specifications.


Specifications

Core Configuration

GeForce GT 640MGeForce GTX 760M
GPU NameGK107 (N13P-GS)vsGK106 (N14E-GL-A1)
Fab Process28 nmvs28 nm
Die Size118 mm²vs221 mm²
Transistors1,270 millionvs2,540 million
Shaders384vs768
Compute Units2vs4
Core clock625 MHzvs628 MHz
ROPs16vs16
TMUs32vs64

Memory Configuration

GeForce GT 640MGeForce GTX 760M
Memory TypeDDR3vsGDDR5
Bus Width128 bitvs128 bit
Memory Speed900 MHz
1800 MHz effective
vs1002 MHz
4008 MHz effective
Memory Size2048 Mbvs2048 Mb

Additional details

GeForce GT 640MGeForce GTX 760M
TDP32 wattsvs55 watts
Release Date22 Mar 2012vs30 May 2013

Raw Performance comparison

Pixel Rate

  • GeForce GT 640M
    5.00 GP/s
  • GeForce GTX 760M
    10.05 GP/s

GigaPixels - higher is better

Texel Rate

  • GeForce GT 640M
    20.00 GT/s
  • GeForce GTX 760M
    40.20 GT/s

GigaTexels - higher is better

Memory bandwidth

  • GeForce GT 640M
    28.80 GB/s
  • GeForce GTX 760M
    64.10 GB/s

GB/s - higher is better

Single precision performance

  • GeForce GT 640M
    480.00 GFLOPs
  • GeForce GTX 760M
    964.60 GFLOPs

GFLOPs - higher is better

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