GeForce G100 OEM vs GeForce GT 640 OEM Rebrand

GeForce G100 OEM
Memory: 256Mb DDR2DESKTOP
Release date: 10 Mar 2009
GeForce G100 OEM
GeForce GT 640 OEM Rebrand
Memory: 1536Mb DDR3DESKTOP
Release date: 24 Apr 2012
GeForce GT 640 OEM Rebrand
You are comparing OEM or variant versions of at least one VGA. Did you mean GeForce G100 OEM vs GeForce GT 640 instead?

Summary

Reasons to consider GeForce G100 OEM

40 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce GT 640 OEM Rebrand .
Based on an outdated architecture (Nvidia Tesla), there are no performance optimizations for current games and applications
PhysX support, however PhysX performance on newest games may be poor

Reasons to consider GeForce GT 640 OEM Rebrand

This is a much newer product, it might have better long term support.
Higher theoretical gaming performance, based on specifications.
Supports PhysX
Based on an outdated architecture (Nvidia Fermi), there are no performance optimizations for current games and applications

GeForce GT 640 OEM Rebrand

HWBench recommends GeForce GT 640 OEM Rebrand

Based on theoretical specifications.


Specifications

Core Configuration

GeForce G100 OEMGeForce GT 640 OEM Rebrand
GPU NameG98 (G98-700-U2)vsGF116 (GF116-150-A1)
Fab Process65 nmvs40 nm
Die Size86 mm²vs238 mm²
Transistors210 millionvs1,170 million
Shaders8vs144
Compute Units1vs3
Core clock540 MHzvs720 MHz
ROPs4vs24
TMUs8vs24

Memory Configuration

GeForce G100 OEMGeForce GT 640 OEM Rebrand
Memory TypeDDR2vsDDR3
Bus Width64 bitvs192 bit
Memory Speed400 MHz
800 MHz effective
vs800 MHz
1600 MHz effective
Memory Size256 Mbvs1536 Mb

Additional details

GeForce G100 OEMGeForce GT 640 OEM Rebrand
TDP35 wattsvs75 watts
Release Date10 Mar 2009vs24 Apr 2012

Raw Performance comparison

Pixel Rate

  • GeForce G100 OEM
    2.16 GP/s
  • GeForce GT 640 OEM Rebrand
    4.32 GP/s

GigaPixels - higher is better

Texel Rate

  • GeForce G100 OEM
    4.32 GT/s
  • GeForce GT 640 OEM Rebrand
    17.30 GT/s

GigaTexels - higher is better

Memory bandwidth

  • GeForce G100 OEM
    6.40 GB/s
  • GeForce GT 640 OEM Rebrand
    38.40 GB/s

GB/s - higher is better

Single precision performance

  • GeForce G100 OEM
    20.80 GFLOPs
  • GeForce GT 640 OEM Rebrand
    414.70 GFLOPs

GFLOPs - higher is better