The HIS Radeon HD 7950 IceQ X? Boost comes with a large overclock, which increases its out of the box performance to GTX 670 levels. Thanks to a large dual fan cooler we also see great temperature and massive overclocking potential: +20% real life performance from overclocking."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips