GeForce GT 640 vs GeForce GTX 750 Ti

GeForce GT 640
Memory: 2048Mb DDR3DESKTOP
Release date: 5 Jun 2012
GeForce GT 640
GeForce GTX 750 Ti
Memory: 2048Mb GDDR5DESKTOP
Release date: 18 Feb 2014
GeForce GTX 750 Ti

Summary

Synthetic performance index

  • GeForce GT 640
    100%
  • GeForce GTX 750 Ti
    256%

Relative performance

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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications

Reasons to consider GeForce GTX 750 Ti

This is a much newer product, it might have better long term support.
Around 156% 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Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications

GeForce GTX 750 Ti

HWBench recommends GeForce GTX 750 Ti

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


Specifications

Core Configuration

GeForce GT 640GeForce GTX 750 Ti
GPU NameGK107 (GK107-300-A2)vsGM107 (GM107-400-A2)
Fab Process28 nmvs28 nm
Die Size118 mm²vs148 mm²
Transistors1,270 millionvs1,870 million
Shaders384vs640
Compute Units2vs5
Core clock902 MHzvs1020 MHz
ROPs16vs16
TMUs32vs40

Memory Configuration

GeForce GT 640GeForce GTX 750 Ti
Memory TypeDDR3vsGDDR5
Bus Width128 bitvs128 bit
Memory Speed891 MHz
1782 MHz effective
vs1350 MHz
5400 MHz effective
Memory Size2048 Mbvs2048 Mb

Additional details

GeForce GT 640GeForce GTX 750 Ti
TDP65 wattsvs60 watts
Release Date5 Jun 2012vs18 Feb 2014

Raw Performance comparison

Pixel Rate

  • GeForce GT 640
    7.22 GP/s
  • GeForce GTX 750 Ti
    16.32 GP/s

GigaPixels - higher is better

Texel Rate

  • GeForce GT 640
    28.90 GT/s
  • GeForce GTX 750 Ti
    40.80 GT/s

GigaTexels - higher is better

Memory bandwidth

  • GeForce GT 640
    28.50 GB/s
  • GeForce GTX 750 Ti
    86.40 GB/s

GB/s - higher is better

Single precision performance

  • GeForce GT 640
    692.70 GFLOPs
  • GeForce GTX 750 Ti
    1305.60 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • GeForce GT 640
    2190
  • GeForce GTX 750 Ti
    5610

Points (higher is better)