We know that the GM206 GPU has far more headroom in it than reference or board partner speeds would suggest, so we pushed to see how far we could overclock Palit's GTX 950 StormX Dual card.
Given Palit's modest out-of-the-box operating frequency, we had no problem achieving a very healthy overclocking boost. The core was increased by 170MHz and memory went up by 1200MHz effective. We recorded a maximum boost core frequency of 1474MHz during gaming.
Overclocking performance is strong, although the Palit card could not quite match the core frequency performance of Asus' STRIX Gaming GTX 950 DC2 OC card due to the latter's stronger power delivery system (and the silicon lottery). That said, Palit's card is cheaper and the frequency boost is still very healthy.