Radeon HD 6670 vs Radeon HD 7950 Boost

Radeon HD 6670
Memory: 1024Mb GDDR5DESKTOP
Release date: 19 Apr 2011
Radeon HD 6670
Radeon HD 7950 Boost
Memory: 3072Mb GDDR5DESKTOP
Release date: 22 Jun 2012
Radeon HD 7950 Boost


Synthetic performance index

  • Radeon HD 6670
  • Radeon HD 7950 Boost

Relative performance

Reasons to consider Radeon HD 6670

134 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 7950 Boost .
Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications.

Reasons to consider Radeon HD 7950 Boost

This is a much newer product, it might have better long term support.
Around 365% higher average synthetic performance.
Supports Direct3D 12 Async Compute.
Supports ReLive (allows game streaming/recording with minimum performance penalty).
Supports Mantle.

Radeon HD 7950 Boost

HWBench recommends Radeon HD 7950 Boost

The Radeon HD 7950 Boost is the better performing card based on the synthetic benchmarks used (1 benchmarks).


Core Configuration

Radeon HD 6670Radeon HD 7950 Boost
GPU NameTurks (Turks XT)vsTahiti (Tahiti PRO2)
Fab Process40 nmvs28 nm
Die Size118 mm²vs352 mm²
Transistors716 millionvs4,313 million
Compute Units6vs28
Core clock800 MHzvs850 MHz

Memory Configuration

Radeon HD 6670Radeon HD 7950 Boost
Memory TypeGDDR5vsGDDR5
Bus Width128 bitvs384 bit
Memory Speed1000 MHz
4000 MHz effective
vs1250 MHz
5000 MHz effective
Memory Size1024 Mbvs3072 Mb

Additional details

Radeon HD 6670Radeon HD 7950 Boost
TDP66 wattsvs200 watts
Release Date19 Apr 2011vs22 Jun 2012

Raw Performance comparison

Pixel Rate

  • Radeon HD 6670
    6.40 GP/s
  • Radeon HD 7950 Boost
    27.20 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon HD 6670
    19.20 GT/s
  • Radeon HD 7950 Boost
    95.20 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon HD 6670
    64.00 GB/s
  • Radeon HD 7950 Boost
    240.00 GB/s

GB/s - higher is better

Single precision performance

  • Radeon HD 6670
    768.00 GFLOPs
  • Radeon HD 7950 Boost
    3046.00 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • Radeon HD 6670
  • Radeon HD 7950 Boost

Points (higher is better)