GeForce GT 640 vs GeForce GTX 960

GeForce GT 640
Memory: 2048Mb DDR3DESKTOP
Release date: 5 Jun 2012
GeForce GT 640
GeForce GTX 960
Memory: 2048Mb GDDR5DESKTOP
Release date: 22 Jan 2015
GeForce GTX 960

Summary

Synthetic performance index

  • GeForce GT 640
    100%
  • GeForce GTX 960
    473%

Relative performance

Reasons to consider GeForce GT 640

55 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce GTX 960 .
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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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 960

This is a much newer product, it might have better long term support.
Around 373% 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Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications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 960

HWBench recommends GeForce GTX 960

The GeForce GTX 960 is the better performing card based on the synthetic benchmarks used (1 benchmarks).


Specifications

Core Configuration

GeForce GT 640GeForce GTX 960
GPU NameGK107 (GK107-300-A2)vsGM206 (GM206-300-A1)
Fab Process28 nmvs28 nm
Die Size118 mm²vs228 mm²
Transistors1,270 millionvs2,940 million
Shaders384vs1024
Compute Units2vs8
Core clock902 MHzvs1127 MHz
ROPs16vs32
TMUs32vs64

Memory Configuration

GeForce GT 640GeForce GTX 960
Memory TypeDDR3vsGDDR5
Bus Width128 bitvs128 bit
Memory Speed891 MHz
1782 MHz effective
vs1753 MHz
7012 MHz effective
Memory Size2048 Mbvs2048 Mb

Additional details

GeForce GT 640GeForce GTX 960
TDP65 wattsvs120 watts
Release Date5 Jun 2012vs22 Jan 2015

Raw Performance comparison

Pixel Rate

  • GeForce GT 640
    7.22 GP/s
  • GeForce GTX 960
    36.10 GP/s

GigaPixels - higher is better

Texel Rate

  • GeForce GT 640
    28.90 GT/s
  • GeForce GTX 960
    72.10 GT/s

GigaTexels - higher is better

Memory bandwidth

  • GeForce GT 640
    28.50 GB/s
  • GeForce GTX 960
    112.20 GB/s

GB/s - higher is better

Single precision performance

  • GeForce GT 640
    692.70 GFLOPs
  • GeForce GTX 960
    2308.10 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • GeForce GT 640
    2190
  • GeForce GTX 960
    10380

Points (higher is better)