I think we are on the verge of a new era of partnership with government - Steve 'Understatement' Ballmer
Again, we used EVGA Nforce 680i motherboard and even Corsair recommends this motherboard for its memory. The interesting part was that we got to this 1300MHz milestone at 2.4 V memory. We managed to run PI and some other tests and will provide more, later. We managed to boot and enter Windows at both 1320MHz and 1333MHz but at press time we cannot yet run stable at those speeds.
Corsair Dominator 10000C5 works at 1300MHz with 5-5-5-18 timings, 2.4 Voltage and this is the fastest memory that we've tested so far. We had to overclock the CPU at 330 MHz - 11x300 MHz FSB but our Core 2 Extreme can easily take it even at default voltage.
Here's the proof. µ
Dominator 10000C5 at 13000 MHz and 5-5-5-18
It finishes Pi 8Mb for 3 minutes and 11 seconds