Radeon HD 4520 vs Radeon HD 7790

Radeon HD 4520
Memory: 512Mb DDR2DESKTOP
Release date: 2 Dec 2009
Radeon HD 4520
Radeon HD 7790
Memory: 1024Mb GDDR5DESKTOP
Release date: 22 Mar 2013
Radeon HD 7790

Summary

Reasons to consider Radeon HD 4520

60 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 7790 .
Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications

Reasons to consider Radeon HD 7790

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 FreeSync
Supports ReLive (allows game streaming/recording with minimum performance penalty)
Supports TrueAudio
Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications

Radeon HD 7790

HWBench recommends Radeon HD 7790

Based on theoretical specifications.


Specifications

Core Configuration

Radeon HD 4520Radeon HD 7790
GPU NameRV710 ()vsBonaire (Bonaire XT)
Fab Process55 nmvs28 nm
Die Size73 mm²vs160 mm²
Transistors242 millionvs2,080 million
Shaders80vs896
Compute Units1vs14
Core clock600 MHzvs1000 MHz
ROPs4vs16
TMUs8vs56

Memory Configuration

Radeon HD 4520Radeon HD 7790
Memory TypeDDR2vsGDDR5
Bus Width64 bitvs128 bit
Memory Speed400 MHz
800 MHz effective
vs1500 MHz
6000 MHz effective
Memory Size512 Mbvs1024 Mb

Additional details

Radeon HD 4520Radeon HD 7790
TDP25 wattsvs85 watts
Release Date2 Dec 2009vs22 Mar 2013

Raw Performance comparison

Pixel Rate

  • Radeon HD 4520
    2.40 GP/s
  • Radeon HD 7790
    16.00 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon HD 4520
    4.80 GT/s
  • Radeon HD 7790
    56.00 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon HD 4520
    6.40 GB/s
  • Radeon HD 7790
    96.00 GB/s

GB/s - higher is better

Single precision performance

  • Radeon HD 4520
    96.00 GFLOPs
  • Radeon HD 7790
    1792.00 GFLOPs

GFLOPs - higher is better