Radeon HD 5870 vs GeForce GTX 660

Radeon HD 5870
Memory: 1024Mb GDDR5DESKTOP
Release date: 23 Sep 2009
Radeon HD 5870
GeForce GTX 660
Memory: 2048Mb GDDR5DESKTOP
Release date: 6 Sep 2012
GeForce GTX 660


Synthetic performance index

  • Radeon HD 5870
  • GeForce GTX 660

Relative performance

Reasons to consider Radeon HD 5870

Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications.

Reasons to consider GeForce GTX 660

48 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 5870 .
This is a much newer product, it might have better long term support.
Around 58% 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Based on an outdated architecture (Nvidia Kepler), there are less performance optimizations for current games and applications.

GeForce GTX 660

HWBench recommends GeForce GTX 660

The GeForce GTX 660 is the better performing card based on the synthetic benchmarks used (1 benchmarks).


Core Configuration

Radeon HD 5870GeForce GTX 660
GPU NameCypress (Cypress XT)vsGK106 (GK106-400-A1)
Fab Process40 nmvs28 nm
Die Size334 mm²vs221 mm²
Transistors2,154 millionvs2,540 million
Compute Units20vs5
Core clock850 MHzvs980 MHz

Memory Configuration

Radeon HD 5870GeForce GTX 660
Memory TypeGDDR5vsGDDR5
Bus Width256 bitvs192 bit
Memory Speed1200 MHz
4800 MHz effective
vs1502 MHz
6008 MHz effective
Memory Size1024 Mbvs2048 Mb

Additional details

Radeon HD 5870GeForce GTX 660
TDP188 wattsvs140 watts
Release Date23 Sep 2009vs6 Sep 2012

Raw Performance comparison

Pixel Rate

  • Radeon HD 5870
    27.20 GP/s
  • GeForce GTX 660
    19.60 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon HD 5870
    68.00 GT/s
  • GeForce GTX 660
    78.40 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon HD 5870
    154.00 GB/s
  • GeForce GTX 660
    144.00 GB/s

GB/s - higher is better

Single precision performance

  • Radeon HD 5870
    2720.00 GFLOPs
  • GeForce GTX 660
    1882.00 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • Radeon HD 5870
  • GeForce GTX 660

Points (higher is better)