AH, ok. The skipping frames part had me confused. Not all of the 2B's will go that high but there is a better chance they can OC. The other PCB models just won't go past around 70hz without (not just skipping frames) but breaking. With the Overlord monitors they test them out ahead of time and sell them as OC models or not. Also, the Catleap 2B PCB's have a connector for a 2nd output that isn't used.