GeForce GT 640 OEM Rebrand vs GeForce GTX 750 Ti

GeForce GT 640 OEM Rebrand
Memory: 1536Mb DDR3DESKTOP
Release date: 24 Apr 2012
GeForce GT 640 OEM Rebrand
GeForce GTX 750 Ti
Memory: 2048Mb GDDR5DESKTOP
Release date: 18 Feb 2014
GeForce GTX 750 Ti
You are comparing OEM or variant versions of at least one VGA. Did you mean GeForce GT 640 vs GeForce GTX 750 Ti instead?

Summary

Reasons to consider GeForce GT 640 OEM Rebrand

Supports PhysX
Based on an outdated architecture (Nvidia Fermi), there are no performance optimizations for current games and applications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.
Higher theoretical gaming performance, based on specifications.
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Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications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

Based on theoretical specifications.


Specifications

Core Configuration

GeForce GT 640 OEM RebrandGeForce GTX 750 Ti
GPU NameGF116 (GF116-150-A1)vsGM107 (GM107-400-A2)
Fab Process40 nmvs28 nm
Die Size238 mm²vs148 mm²
Transistors1,170 millionvs1,870 million
Shaders144vs640
Compute Units3vs5
Core clock720 MHzvs1020 MHz
ROPs24vs16
TMUs24vs40

Memory Configuration

GeForce GT 640 OEM RebrandGeForce GTX 750 Ti
Memory TypeDDR3vsGDDR5
Bus Width192 bitvs128 bit
Memory Speed800 MHz
1600 MHz effective
vs1350 MHz
5400 MHz effective
Memory Size1536 Mbvs2048 Mb

Additional details

GeForce GT 640 OEM RebrandGeForce GTX 750 Ti
TDP75 wattsvs60 watts
Release Date24 Apr 2012vs18 Feb 2014

Raw Performance comparison

Pixel Rate

  • GeForce GT 640 OEM Rebrand
    4.32 GP/s
  • GeForce GTX 750 Ti
    16.32 GP/s

GigaPixels - higher is better

Texel Rate

  • GeForce GT 640 OEM Rebrand
    17.30 GT/s
  • GeForce GTX 750 Ti
    40.80 GT/s

GigaTexels - higher is better

Memory bandwidth

  • GeForce GT 640 OEM Rebrand
    38.40 GB/s
  • GeForce GTX 750 Ti
    86.40 GB/s

GB/s - higher is better

Single precision performance

  • GeForce GT 640 OEM Rebrand
    414.70 GFLOPs
  • GeForce GTX 750 Ti
    1305.60 GFLOPs

GFLOPs - higher is better