HWBench.com

    GeForce GT 640 GDDR5 vs GeForce GT 635 OEM

    GeForce GT 640 GDDR5
    Memory: 1024Mb GDDR5DESKTOP
    Release date: 29 May 2013
    GeForce GT 640 GDDR5
    GeForce GT 635 OEM
    Memory: 1024Mb DDR3DESKTOP
    Release date: 1 Oct 2013
    GeForce GT 635 OEM
    You are comparing OEM or variant versions of at least one VGA. Did you mean GeForce GT 640 vs GeForce GT 630 instead?

    Summary

    Synthetic performance index

    • GeForce GT 640 GDDR5
      161%
    • GeForce GT 635 OEM
      100%

    Relative performance

    Reasons to consider GeForce GT 640 GDDR5

    Around 61% 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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications

    Reasons to consider GeForce GT 635 OEM

    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    Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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 GDDR5

    HWBench recommends GeForce GT 640 GDDR5

    The GeForce GT 640 GDDR5 is the better performing card based on the synthetic benchmarks used (1 benchmarks).

    Specifications

    Core Configuration

    GeForce GT 640 GDDR5GeForce GT 635 OEM
    GPU NameGK208 (GK208-400-A1)vsGK208 (GK208-301-A1)
    Fab Process28 nmvs28 nm
    Die Size87 mm²vs87 mm²
    Transistorsunknownvsunknown
    Shaders384vs384
    Compute Units2vs2
    Core clock1046 MHzvs967 MHz
    ROPs8vs8
    TMUs16vs16

    Memory Configuration

    GeForce GT 640 GDDR5GeForce GT 635 OEM
    Memory TypeGDDR5vsDDR3
    Bus Width64 bitvs64 bit
    Memory Speed1252 MHz
    5008 MHz effective    		vs900 MHz
    1800 MHz effective
    Memory Size1024 Mbvs1024 Mb

    Additional details

    GeForce GT 640 GDDR5GeForce GT 635 OEM
    TDP49 wattsvs35 watts
    Release Date29 May 2013vs1 Oct 2013

    Raw Performance comparison

    Pixel Rate

    • GeForce GT 640 GDDR5
      8.37 GP/s
    • GeForce GT 635 OEM
      7.74 GP/s

    GigaPixels - higher is better

    Texel Rate

    • GeForce GT 640 GDDR5
      16.70 GT/s
    • GeForce GT 635 OEM
      15.50 GT/s

    GigaTexels - higher is better

    Memory bandwidth

    • GeForce GT 640 GDDR5
      40.10 GB/s
    • GeForce GT 635 OEM
      14.40 GB/s

    GB/s - higher is better

    Single precision performance

    • GeForce GT 640 GDDR5
      803.30 GFLOPs
    • GeForce GT 635 OEM
      742.70 GFLOPs

    GFLOPs - higher is better

    Synthetic benchmarks

    3DMark 11

    • GeForce GT 640 GDDR5
      2280
    • GeForce GT 635 OEM
      1410

    Points (higher is better)

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