Radeon HD 4890 vs Radeon HD 7770 GHz Edition

Radeon HD 4890
Memory: 1024Mb GDDR5DESKTOP
Release date: 2 Apr 2009
Radeon HD 4890
Radeon HD 7770 GHz Edition
Memory: 1024Mb GDDR5DESKTOP
Release date: 15 Feb 2012
Radeon HD 7770 GHz Edition

Summary

Reasons to consider Radeon HD 4890

Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications.

Reasons to consider Radeon HD 7770 GHz Edition

110 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 4890 .
This is a much newer product, it might have better long term support.
Higher theoretical gaming performance, based on specifications.
Supports Direct3D 12 Async Compute.
Supports ReLive (allows game streaming/recording with minimum performance penalty).
Supports Mantle.

Radeon HD 7770 GHz Edition

HWBench recommends Radeon HD 7770 GHz Edition

Based on theoretical specifications.



Specifications

Core Configuration

Radeon HD 4890Radeon HD 7770 GHz Edition
GPU NameRV790 (RV790 XT)vsCape Verde (Cape Verde XT)
Fab Process55 nmvs28 nm
Die Size282 mm²vs123 mm²
Transistors959 millionvs1,500 million
Shaders800vs640
Compute Units10vs10
Core clock850 MHzvs1000 MHz
ROPs16vs16
TMUs40vs40

Memory Configuration

Radeon HD 4890Radeon HD 7770 GHz Edition
Memory TypeGDDR5vsGDDR5
Bus Width256 bitvs128 bit
Memory Speed975 MHz
3900 MHz effective
vs1125 MHz
4500 MHz effective
Memory Size1024 Mbvs1024 Mb

Additional details

Radeon HD 4890Radeon HD 7770 GHz Edition
TDP190 wattsvs80 watts
Release Date2 Apr 2009vs15 Feb 2012

Raw Performance comparison

Pixel Rate

  • Radeon HD 4890
    13.60 GP/s
  • Radeon HD 7770 GHz Edition
    16.00 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon HD 4890
    34.00 GT/s
  • Radeon HD 7770 GHz Edition
    40.00 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon HD 4890
    125.00 GB/s
  • Radeon HD 7770 GHz Edition
    72.00 GB/s

GB/s - higher is better

Single precision performance

  • Radeon HD 4890
    1360.00 GFLOPs
  • Radeon HD 7770 GHz Edition
    1280.00 GFLOPs

GFLOPs - higher is better