Radeon HD 5870 vs Radeon HD 6870

Radeon HD 5870
Memory: 1024Mb GDDR5DESKTOP
Release date: 23 Sep 2009
Radeon HD 5870
Radeon HD 6870
Memory: 1024Mb GDDR5DESKTOP
Release date: 21 Oct 2010
Radeon HD 6870

Summary

Synthetic performance index

  • Radeon HD 5870
    100%
  • Radeon HD 6870
    105%

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Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications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 Radeon HD 6870

This is a much newer product, it might have better long term support.
Around 5% higher average synthetic performance.
Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications

Radeon HD 6870

HWBench recommends Radeon HD 6870

The Radeon HD 6870 is the better performing card based on the synthetic benchmarks used (1 benchmarks).


Specifications

Core Configuration

Radeon HD 5870Radeon HD 6870
GPU NameCypress (Cypress XT)vsBarts (Barts XT)
Fab Process40 nmvs40 nm
Die Size334 mm²vs255 mm²
Transistors2,154 millionvs1,700 million
Shaders1600vs1120
Compute Units20vs14
Core clock850 MHzvs900 MHz
ROPs32vs32
TMUs80vs56

Memory Configuration

Radeon HD 5870Radeon HD 6870
Memory TypeGDDR5vsGDDR5
Bus Width256 bitvs256 bit
Memory Speed1200 MHz
4800 MHz effective
vs1050 MHz
4200 MHz effective
Memory Size1024 Mbvs1024 Mb

Additional details

Radeon HD 5870Radeon HD 6870
TDP188 wattsvs151 watts
Release Date23 Sep 2009vs21 Oct 2010

Raw Performance comparison

Pixel Rate

  • Radeon HD 5870
    27.20 GP/s
  • Radeon HD 6870
    28.80 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon HD 5870
    68.00 GT/s
  • Radeon HD 6870
    50.40 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon HD 5870
    154.00 GB/s
  • Radeon HD 6870
    134.00 GB/s

GB/s - higher is better

Single precision performance

  • Radeon HD 5870
    2720.00 GFLOPs
  • Radeon HD 6870
    2016.00 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • Radeon HD 5870
    4290
  • Radeon HD 6870
    4540

Points (higher is better)