The Geforce GTX 950 has a fair amount of overclocking headroom. But each sample overclocks differently and our results can serve only as guideline for what you can achieve with another GTX 950.
The reference card’s base clock frequency is 1024MHz, with a boost clock of 1188MHz. However, the ASUS GTX 950 Strix OC base clock frequency is 1165MHz, with a boost clock of 1355MHz, and we measured clocks up to 1418MHz in games. This is already 141MHz overclock for the Base GPU clock but we achieved +110MHz over the GPU factory overclock. This was achieved by using standard voltage and AUTO fan settings.
Memory overclocking was good and we raised memory clock by 350MHz (1400MHz effective GDDR5). Overall we measured up to 14 per cent performance increase after our overclocking.