HIS Radeon HD 7950 IceQ X Boost 3 GB @ techPowerUp
 

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.

http://www.techpowerup.com/reviews/H...7950_X2_Boost/