Most of Geforce 9800 GX2 cards won't be overclocked at launch. The second batch will include a few courageous partners that will overclock their cards.

We learned that MSI will increase its clocks all the way to 660MHz, which is 10 percent more than the 600MHz reference clock.

We are sure that MSI won’t be the only partner to do it, but this is the only clock we've learned about so far. We can bet that EVGA, BFG and probably Gainward will come up with some faster clocked cards.

After all, EVGA did show the water-cooled solution, which means that such a card has a chance for even higher clocks than 660MHz.