GeForce GT 630 vs GeForce GT 640

GeForce GT 630
Memory: 1024Mb DDR3DESKTOP
Release date: 15 May 2012
GeForce GT 630
GeForce GT 640
Memory: 2048Mb DDR3DESKTOP
Release date: 5 Jun 2012
GeForce GT 640

Summary

Synthetic performance index

  • GeForce GT 630
    100%
  • GeForce GT 640
    195%

Relative performance

Reasons to consider GeForce GT 630

Supports PhysX
Based on an outdated architecture (Nvidia Fermi), there are no performance optimizations for current games and applications

Reasons to consider GeForce GT 640

Around 95% 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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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 640

HWBench recommends GeForce GT 640

The GeForce GT 640 is the better performing card based on the synthetic benchmarks used (1 benchmarks).


Specifications

Core Configuration

GeForce GT 630GeForce GT 640
GPU NameGF108 (GF108-400-A1)vsGK107 (GK107-300-A2)
Fab Process40 nmvs28 nm
Die Size116 mm²vs118 mm²
Transistors585 millionvs1,270 million
Shaders96vs384
Compute Units2vs2
Core clock810 MHzvs902 MHz
ROPs4vs16
TMUs16vs32

Memory Configuration

GeForce GT 630GeForce GT 640
Memory TypeDDR3vsDDR3
Bus Width128 bitvs128 bit
Memory Speed900 MHz
1800 MHz effective
vs891 MHz
1782 MHz effective
Memory Size1024 Mbvs2048 Mb

Additional details

GeForce GT 630GeForce GT 640
TDP65 wattsvs65 watts
Release Date15 May 2012vs5 Jun 2012

Raw Performance comparison

Pixel Rate

  • GeForce GT 630
    3.24 GP/s
  • GeForce GT 640
    7.22 GP/s

GigaPixels - higher is better

Texel Rate

  • GeForce GT 630
    13.00 GT/s
  • GeForce GT 640
    28.90 GT/s

GigaTexels - higher is better

Memory bandwidth

  • GeForce GT 630
    28.80 GB/s
  • GeForce GT 640
    28.50 GB/s

GB/s - higher is better

Single precision performance

  • GeForce GT 630
    311.00 GFLOPs
  • GeForce GT 640
    692.70 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • GeForce GT 630
    1120
  • GeForce GT 640
    2190

Points (higher is better)