[techbuyersguru] Mixed Crossfire and AMD's Catalyst 13.8

[Final8ty]

Many gamers upgrade their systems over time, and one of the most cost-effective ways to add performance to an existing rig is to add a second video card. AMD's Crossfire technology allows users not only to add a second identical card, but to add any card within the same series.

But what type of performance increase can one expect from such a mixed Crossfire, or "FrankenFire" arrangement? And what are the effects of AMD's new frame-pacing driver on such mixed Crossfire setups? We aim to find out!
http://techbuyersguru.com/Frankenfire.php


Unfortunately they used the beta 2 version of 13.8 with the PCI-E bug and as they didn't disable ULPS one of the lanes would have been running at PCI-E x1 for the entire test of 13.8.
http://forums.overclockers.co.uk/showthread.php?p=24911144#post24911144

[Dainas]

Thank god that 13.10 finally released. Most dedicated crossfire users were already in the habit of disabling ULPs as it has never been worth the bother, but for reviews it was a disaster.

[SKYMTL]

By ULPS, I assume you are talking about the Ultra Low Power State?