GeForce GTX 660 vs Radeon R9 290X2

GeForce GTX 660
Memory: 2048Mb GDDR5DESKTOP
Release date: 6 Sep 2012
GeForce GTX 660
Radeon R9 290X2
Memory: 4096Mb GDDR5DESKTOP
Release date: 24 Jun 2014
Radeon R9 290X2
You are comparing OEM or variant versions of at least one VGA. Did you mean GeForce GTX 660 vs Radeon R9 295X2 instead?

Summary

Reasons to consider GeForce GTX 660

440 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon R9 290X2 .
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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications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 Radeon R9 290X2

This is a much newer product, it might have better long term support.
Higher theoretical gaming performance, based on specifications.
Supports Direct3D 12 Async Compute
Supports FreeSync
Supports ReLive (allows game streaming/recording with minimum performance penalty)
Supports TrueAudio
Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications

Radeon R9 290X2

HWBench recommends Radeon R9 290X2

Based on theoretical specifications.


Specifications

Core Configuration

GeForce GTX 660Radeon R9 290X2
GPU NameGK106 (GK106-400-A1)vsHawaii (Hawaii XT)
Fab Process28 nmvs28 nm
Die Size221 mm²vs438 mm²
Transistors2,540 millionvs6,200 million
Shaders960vs2816
Compute Units5vs44
Core clock980 MHzvs1000 MHz
ROPs24vs64
TMUs80vs176

Memory Configuration

GeForce GTX 660Radeon R9 290X2
Memory TypeGDDR5vsGDDR5
Bus Width192 bitvs512 bit x2
Memory Speed1502 MHz
6008 MHz effective
vs1350 MHz
5400 MHz effective
Memory Size2048 Mbvs4096 Mb

Additional details

GeForce GTX 660Radeon R9 290X2
TDP140 wattsvs580 watts
Release Date6 Sep 2012vs24 Jun 2014

Raw Performance comparison

Pixel Rate

  • GeForce GTX 660
    19.60 GP/s
  • Radeon R9 290X2
    128.00 GP/s

GigaPixels - higher is better

Texel Rate

  • GeForce GTX 660
    78.40 GT/s
  • Radeon R9 290X2
    352.00 GT/s

GigaTexels - higher is better

Memory bandwidth

  • GeForce GTX 660
    144.00 GB/s
  • Radeon R9 290X2
    692.00 GB/s

GB/s - higher is better

Single precision performance

  • GeForce GTX 660
    1882.00 GFLOPs
  • Radeon R9 290X2
    11264.00 GFLOPs

GFLOPs - higher is better