Radeon HD 5490 vs Radeon HD 7990

Radeon HD 5490
Memory: 1024Mb GDDR3DESKTOP
Release date: 28 Oct 2012
Radeon HD 5490
Radeon HD 7990
Memory: 3072Mb GDDR5DESKTOP
Release date: 24 Apr 2013
Radeon HD 7990

Summary

Reasons to consider Radeon HD 5490

356 watts lower power draw. This might be a strong point if your current power supply is not enough to handle the Radeon HD 7990 .
Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications

Reasons to consider Radeon HD 7990

Higher theoretical gaming performance, based on specifications.
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Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications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 7990

HWBench recommends Radeon HD 7990

Based on theoretical specifications.


Specifications

Core Configuration

Radeon HD 5490Radeon HD 7990
GPU NameCedar (Cedar XTX)vsMalta ()
Fab Process40 nmvs28 nm
Die Size59 mm²vs365 mm²
Transistors292 millionvs4,313 million
Shaders80vs2048
Compute Units2vs32
Core clock650 MHzvs950 MHz
ROPs4vs32
TMUs8vs128

Memory Configuration

Radeon HD 5490Radeon HD 7990
Memory TypeGDDR3vsGDDR5
Bus Width64 bitvs384 bit x2
Memory Speed500 MHz
1000 MHz effective
vs1500 MHz
6000 MHz effective
Memory Size1024 Mbvs3072 Mb

Additional details

Radeon HD 5490Radeon HD 7990
TDP19 wattsvs375 watts
Release Date28 Oct 2012vs24 Apr 2013

Raw Performance comparison

Pixel Rate

  • Radeon HD 5490
    2.60 GP/s
  • Radeon HD 7990
    60.80 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon HD 5490
    5.20 GT/s
  • Radeon HD 7990
    244.00 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon HD 5490
    8.00 GB/s
  • Radeon HD 7990
    576.00 GB/s

GB/s - higher is better

Single precision performance

  • Radeon HD 5490
    104.00 GFLOPs
  • Radeon HD 7990
    7782.00 GFLOPs

GFLOPs - higher is better