Radeon HD 6770 vs Radeon HD 6790

Radeon HD 6770
Memory: 1024Mb GDDR5DESKTOP
Release date: 21 Jan 2011
Radeon HD 6770
Radeon HD 6790
Memory: 1024Mb GDDR5DESKTOP
Release date: 4 Apr 2011
Radeon HD 6790

Summary

Synthetic performance index

  • Radeon HD 6770
    100%
  • Radeon HD 6790
    121%

Relative performance

Reasons to consider Radeon HD 6770

42 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 6790 .
Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications

Reasons to consider Radeon HD 6790

Around 21% higher average synthetic performance.
Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications

Radeon HD 6790

HWBench recommends Radeon HD 6790

The Radeon HD 6790 is the better performing card based on the synthetic benchmarks used (1 benchmarks).


Specifications

Core Configuration

Radeon HD 6770Radeon HD 6790
GPU NameJuniper (Juniper XT)vsBarts (Barts LE)
Fab Process40 nmvs40 nm
Die Size166 mm²vs255 mm²
Transistors1,040 millionvs1,700 million
Shaders800vs800
Compute Units10vs10
Core clock850 MHzvs840 MHz
ROPs16vs16
TMUs40vs40

Memory Configuration

Radeon HD 6770Radeon HD 6790
Memory TypeGDDR5vsGDDR5
Bus Width128 bitvs256 bit
Memory Speed1200 MHz
4800 MHz effective
vs1050 MHz
4200 MHz effective
Memory Size1024 Mbvs1024 Mb

Additional details

Radeon HD 6770Radeon HD 6790
TDP108 wattsvs150 watts
Release Date21 Jan 2011vs4 Apr 2011

Raw Performance comparison

Pixel Rate

  • Radeon HD 6770
    13.60 GP/s
  • Radeon HD 6790
    13.40 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon HD 6770
    34.00 GT/s
  • Radeon HD 6790
    33.60 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon HD 6770
    76.80 GB/s
  • Radeon HD 6790
    134.00 GB/s

GB/s - higher is better

Single precision performance

  • Radeon HD 6770
    1360.00 GFLOPs
  • Radeon HD 6790
    1344.00 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • Radeon HD 6770
    2550
  • Radeon HD 6790
    3090

Points (higher is better)