Radeon HD 6990M vs Radeon R7 250

Radeon HD 6990M
Memory: 2048Mb GDDR5MOBILE
Release date: 12 Jul 2011
Radeon HD 6990M
Radeon R7 250
Memory: 1024Mb GDDR5DESKTOP
Release date: 8 Oct 2013
Radeon R7 250

Summary

Synthetic performance index

  • Radeon HD 6990M
    116%
  • Radeon R7 250
    100%

Relative performance

Reasons to consider Radeon HD 6990M

Around 16% 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Based on an outdated architecture (ATI TeraScale), there are no performance optimizations for current games and applications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 R7 250

This is a much newer product, it might have better long term support.
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Based on an outdated architecture (AMD GCN), there may be no performance optimizations for current games and applications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 6990M

HWBench recommends Radeon HD 6990M

The Radeon HD 6990M is the better performing card based on the synthetic benchmarks used (1 benchmarks).


Specifications

Core Configuration

Radeon HD 6990MRadeon R7 250
GPU NameBlackcomb (Blackcomb XTX)vsOland (Oland XT)
Fab Process40 nmvs28 nm
Die Size212 mm²vs90 mm²
Transistors1,700 millionvs1,040 million
Shaders1120vs384
Compute Units14vs6
Core clock715 MHzvs1000 MHz
ROPs32vs8
TMUs56vs24

Memory Configuration

Radeon HD 6990MRadeon R7 250
Memory TypeGDDR5vsGDDR5
Bus Width256 bitvs128 bit
Memory Speed900 MHz
3600 MHz effective
vs1150 MHz
4600 MHz effective
Memory Size2048 Mbvs1024 Mb

Additional details

Radeon HD 6990MRadeon R7 250
TDP100 wattsvs65 watts
Release Date12 Jul 2011vs8 Oct 2013

Raw Performance comparison

Pixel Rate

  • Radeon HD 6990M
    22.88 GP/s
  • Radeon R7 250
    8.00 GP/s

GigaPixels - higher is better

Texel Rate

  • Radeon HD 6990M
    40.00 GT/s
  • Radeon R7 250
    24.00 GT/s

GigaTexels - higher is better

Memory bandwidth

  • Radeon HD 6990M
    115.20 GB/s
  • Radeon R7 250
    73.60 GB/s

GB/s - higher is better

Single precision performance

  • Radeon HD 6990M
    1601.60 GFLOPs
  • Radeon R7 250
    768.00 GFLOPs

GFLOPs - higher is better

Synthetic benchmarks

3DMark 11

  • Radeon HD 6990M
    3190
  • Radeon R7 250
    2740

Points (higher is better)