GTX200 series of the highest Core & shader frequency?

[Team_China Hero]

We played Zotac 275 EXTREME in NOV,but we only have two pcs
Through the voltage MOD
One of the cards can run 1200/2800/1200MHz(Core/shader/Mem) Core Vol 1.6v Mem Vol 2.15V -125℃

Another card can run 1300/2600/1300MHz(Core/shader/Mem) Core Vol 1.63v Mem Vol 2.5V -133℃

We are very busy in Nov,so we only have two days of testing time
2 cards run 750/1750/3050MHz(Core/shader/Mem) on air(with AC 3 Fan),but memory can't run 3050MHz on Ln2 we found the memory too cold last time