Radeon HD 4870 vs Radeon HD 5770

Radeon HD 4870
Memory: 512Mb GDDR5DESKTOP
Release date: 25 Jun 2008
Radeon HD 4870
Radeon HD 5770
Memory: 1024Mb GDDR5DESKTOP
Release date: 13 Oct 2009
Radeon HD 5770

Summary

Synthetic performance index

  • Radeon HD 4870
    100%
  • Radeon HD 5770
    115%

Relative performance

Reasons to consider Radeon HD 4870

Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications

Reasons to consider Radeon HD 5770

42 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 4870 .
This is a much newer product, it might have better long term support.
Around 15% higher average synthetic performance.
Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications

Radeon HD 5770

HWBench recommends Radeon HD 5770

The Radeon HD 5770 is the better performing card based on the synthetic benchmarks used (1 benchmarks).


Specifications

Core Configuration

Radeon HD 4870Radeon HD 5770
GPU NameRV770 (RV770 PRO)vsJuniper (Juniper XT)
Fab Process55 nmvs40 nm
Die Size256 mm²vs166 mm²
Transistors956 millionvs1,040 million
Shaders800vs800
Compute Units10vs10
Core clock750 MHzvs850 MHz
ROPs16vs16
TMUs40vs40

Memory Configuration

Radeon HD 4870Radeon HD 5770
Memory TypeGDDR5vsGDDR5
Bus Width256 bitvs128 bit
Memory Speed900 MHz
3600 MHz effective
vs1200 MHz
4800 MHz effective
Memory Size512 Mbvs1024 Mb

Additional details

Radeon HD 4870Radeon HD 5770
TDP150 wattsvs108 watts
Release Date25 Jun 2008vs13 Oct 2009

Raw Performance comparison

Pixel Rate

  • Radeon HD 4870
    12.00 GP/s
  • Radeon HD 5770
    13.60 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon HD 4870
    30.00 GT/s
  • Radeon HD 5770
    34.00 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon HD 4870
    115.00 GB/s
  • Radeon HD 5770
    76.80 GB/s

GB/s - higher is better

Single precision performance

  • Radeon HD 4870
    1200.00 GFLOPs
  • Radeon HD 5770
    1360.00 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • Radeon HD 4870
    2400
  • Radeon HD 5770
    2780

Points (higher is better)