Legion Hardware - (6-way GeForce GTX 960 Shootout)
 

The default Nvidia specification for the GTX 960 calls for a base clock of 1127MHz, but not one of the cards we tested operates anywhere near this frequency. That said the included SuperSC, G1 Gaming, WindForce X2, Gaming 2G, Phantom and AMP Edition models see just a 5% variation in base clock speed between the highest and lowest clocked models.

http://www.legionhardware.com/articl...hootout,1.html