GeForce 840M vs GeForce GTX 970

GeForce 840M
Memory: 1024Mb DDR3MOBILE
Release date: 12 Mar 2014
GeForce 840M
GeForce GTX 970
Memory: 4096Mb GDDR5DESKTOP
Release date: 19 Sep 2014
GeForce GTX 970

Summary

Synthetic performance index

  • GeForce 840M
    100%
  • GeForce GTX 970
    648%

Relative performance

Reasons to consider GeForce 840M

115 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the GeForce GTX 970 .
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Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications

Reasons to consider GeForce GTX 970

Around 548% 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Based on an outdated architecture (Nvidia Maxwell), there may be no performance optimizations for current games and applications

GeForce GTX 970

HWBench recommends GeForce GTX 970

The GeForce GTX 970 is the better performing card based on the synthetic benchmarks used (1 benchmarks).


Specifications

Core Configuration

GeForce 840MGeForce GTX 970
GPU NameGM108 (N15S-GT)vsGM204 (GM204-200-A1)
Fab Process28 nmvs28 nm
Die Size0 mm²vs398 mm²
Transistorsunknownvs5,200 million
Shaders384vs1664
Compute Units3vs13
Core clock1029 MHzvs1050 MHz
ROPs8vs56
TMUs16vs104

Memory Configuration

GeForce 840MGeForce GTX 970
Memory TypeDDR3vsGDDR5
Bus Width64 bitvs256 bit
Memory Speed1001 MHz
2002 MHz effective
vs1753 MHz
7012 MHz effective
Memory Size1024 Mbvs4096 Mb

Additional details

GeForce 840MGeForce GTX 970
TDP33 wattsvs148 watts
Release Date12 Mar 2014vs19 Sep 2014

Raw Performance comparison

Pixel Rate

  • GeForce 840M
    8.23 GP/s
  • GeForce GTX 970
    58.80 GP/s

GigaPixels - higher is better

Texel Rate

  • GeForce 840M
    16.46 GT/s
  • GeForce GTX 970
    109.20 GT/s

GigaTexels - higher is better

Memory bandwidth

  • GeForce 840M
    16.02 GB/s
  • GeForce GTX 970
    224.40 GB/s

GB/s - higher is better

Single precision performance

  • GeForce 840M
    790.30 GFLOPs
  • GeForce GTX 970
    3494.00 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • GeForce 840M
    2430
  • GeForce GTX 970
    15750

Points (higher is better)