Radeon HD 4870 vs Radeon HD 4850

Radeon HD 4870
Memory: 512Mb GDDR5DESKTOP
Release date: 25 Jun 2008
Radeon HD 4870
Radeon HD 4850
Memory: 512Mb GDDR3DESKTOP
Release date: 25 Jun 2008
Radeon HD 4850

Summary

Synthetic performance index

  • Radeon HD 4870
    126%
  • Radeon HD 4850
    100%

Relative performance

Reasons to consider Radeon HD 4870

Around 26% higher average synthetic performance.
Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications

Reasons to consider Radeon HD 4850

40 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 4870 .
Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications

Radeon HD 4870

HWBench recommends Radeon HD 4870

The Radeon HD 4870 is the better performing card based on the synthetic benchmarks used (1 benchmarks).


Specifications

Core Configuration

Radeon HD 4870Radeon HD 4850
GPU NameRV770 (RV770 PRO)vsRV770 (RV770 PRO)
Fab Process55 nmvs55 nm
Die Size256 mm²vs256 mm²
Transistors956 millionvs956 million
Shaders800vs800
Compute Units10vs10
Core clock750 MHzvs625 MHz
ROPs16vs16
TMUs40vs40

Memory Configuration

Radeon HD 4870Radeon HD 4850
Memory TypeGDDR5vsGDDR3
Bus Width256 bitvs256 bit
Memory Speed900 MHz
3600 MHz effective
vs993 MHz
1986 MHz effective
Memory Size512 Mbvs512 Mb

Additional details

Radeon HD 4870Radeon HD 4850
TDP150 wattsvs110 watts
Release Date25 Jun 2008vs25 Jun 2008

Raw Performance comparison

Pixel Rate

  • Radeon HD 4870
    12.00 GP/s
  • Radeon HD 4850
    10.00 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon HD 4870
    30.00 GT/s
  • Radeon HD 4850
    25.00 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon HD 4870
    115.00 GB/s
  • Radeon HD 4850
    63.60 GB/s

GB/s - higher is better

Single precision performance

  • Radeon HD 4870
    1200.00 GFLOPs
  • Radeon HD 4850
    1000.00 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • Radeon HD 4870
    2400
  • Radeon HD 4850
    1890

Points (higher is better)