GeForce GTS 450 vs GeForce GT 640

GeForce GTS 450
Memory: 1024Mb GDDR5DESKTOP
Release date: 13 Sep 2010
GeForce GTS 450
GeForce GT 640
Memory: 2048Mb DDR3DESKTOP
Release date: 5 Jun 2012
GeForce GT 640

Summary

Synthetic performance index

  • GeForce GTS 450
    100%
  • GeForce GT 640
    103%

Relative performance

Reasons to consider GeForce GTS 450

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Based on an outdated architecture (Nvidia Fermi), there are no performance optimizations for current games and applications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

41 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce GTS 450 .
This is a much newer product, it might have better long term support.
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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications

No clear winner declared

We have no data to declare a winner at this time.


Specifications

Core Configuration

GeForce GTS 450GeForce GT 640
GPU NameGF106 (GF106-250-KA-A1)vsGK107 (GK107-300-A2)
Fab Process40 nmvs28 nm
Die Size238 mm²vs118 mm²
Transistors1,170 millionvs1,270 million
Shaders192vs384
Compute Units4vs2
Core clock783 MHzvs902 MHz
ROPs16vs16
TMUs32vs32

Memory Configuration

GeForce GTS 450GeForce GT 640
Memory TypeGDDR5vsDDR3
Bus Width128 bitvs128 bit
Memory Speed902 MHz
3608 MHz effective
vs891 MHz
1782 MHz effective
Memory Size1024 Mbvs2048 Mb

Additional details

GeForce GTS 450GeForce GT 640
TDP106 wattsvs65 watts
Release Date13 Sep 2010vs5 Jun 2012

Raw Performance comparison

Pixel Rate

  • GeForce GTS 450
    6.26 GP/s
  • GeForce GT 640
    7.22 GP/s

GigaPixels - higher is better

Texel Rate

  • GeForce GTS 450
    25.10 GT/s
  • GeForce GT 640
    28.90 GT/s

GigaTexels - higher is better

Memory bandwidth

  • GeForce GTS 450
    57.70 GB/s
  • GeForce GT 640
    28.50 GB/s

GB/s - higher is better

Single precision performance

  • GeForce GTS 450
    601.30 GFLOPs
  • GeForce GT 640
    692.70 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • GeForce GTS 450
    2120
  • GeForce GT 640
    2190

Points (higher is better)