Radeon HD 7970 vs Radeon HD 7870 XT

Radeon HD 7970
Memory: 3072Mb GDDR5DESKTOP
Release date: 22 Dec 2011
Radeon HD 7970
Radeon HD 7870 XT
Memory: 2048Mb GDDR5DESKTOP
Release date: 19 Nov 2012
Radeon HD 7870 XT

Summary

Synthetic performance index

  • Radeon HD 7970
    125%
  • Radeon HD 7870 XT
    100%

Relative performance

Gaming performance index

  • Radeon HD 7970
    127%
  • Radeon HD 7870 XT
    100%

Relative performance

Reasons to consider Radeon HD 7970

27% higher gaming performance.
Supports Direct3D 12 Async Compute
Supports ReLive (allows game streaming/recording with minimum performance penalty)
Supports Mantle
Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications

Reasons to consider Radeon HD 7870 XT

65 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 7970 .
This is a much newer product, it might have better long term support.
Supports Direct3D 12 Async Compute
Supports ReLive (allows game streaming/recording with minimum performance penalty)
Supports Mantle
Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications

Radeon HD 7970

HWBench recommends Radeon HD 7970

The Radeon HD 7970 is the better performing card based on the game benchmark suite used (2 combinations of games and resolutions).


Specifications

Core Configuration

Radeon HD 7970Radeon HD 7870 XT
GPU NameTahiti (Tahiti XT)vsTahiti (Tahiti LE)
Fab Process28 nmvs28 nm
Die Size352 mm²vs352 mm²
Transistors4,313 millionvs4,313 million
Shaders2048vs1536
Compute Units32vs24
Core clock925 MHzvs925 MHz
ROPs32vs32
TMUs128vs96

Memory Configuration

Radeon HD 7970Radeon HD 7870 XT
Memory TypeGDDR5vsGDDR5
Bus Width384 bitvs256 bit
Memory Speed1375 MHz
5500 MHz effective
vs1500 MHz
6000 MHz effective
Memory Size3072 Mbvs2048 Mb

Additional details

Radeon HD 7970Radeon HD 7870 XT
TDP250 wattsvs185 watts
Release Date22 Dec 2011vs19 Nov 2012

Raw Performance comparison

Pixel Rate

  • Radeon HD 7970
    29.60 GP/s
  • Radeon HD 7870 XT
    29.60 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon HD 7970
    118.00 GT/s
  • Radeon HD 7870 XT
    88.80 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon HD 7970
    264.00 GB/s
  • Radeon HD 7870 XT
    192.00 GB/s

GB/s - higher is better

Single precision performance

  • Radeon HD 7970
    3789.00 GFLOPs
  • Radeon HD 7870 XT
    2842.00 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • Radeon HD 7970
    10760
  • Radeon HD 7870 XT
    8590

Points (higher is better)

Game benchmarks

Bioshock Infinite

DX11, Ultra Quality,DDOD, FX AA

  • Radeon HD 7970
    62
  • Radeon HD 7870 XT
    49

FPS (higher is better)

Crysis 3

DX11,Very High Quality, FXAA

  • Radeon HD 7970
    40
  • Radeon HD 7870 XT
    31

FPS (higher is better)