Well, I did some tweaking. The HTT options have been deciphered!
Standard - 5x
For Overclocking - 3x
At 271 FSB and up, the memory command rate (configurable via Cell Menu -> DRAM COnfiguration) shifts to Auto regardless of what you had it set to (1T).
At 286 FSB (858 HTT), it won't boot. Kinda disappointing, but I might try to tweak more voltages. Anand got up to 335, so I'm confused on this.
CPU is stable up to 2.6GHz, then I went to lunch. It'll get up to 2.7 easily, but then the HTT problem will interfere. So I gotta figure that out first.
In case you're wondering, here's the specs when testing HTT:
FSB: 273
CPU Multi: 5x
HTT Link: For Overclocking (3x)
CPU Voltage: 1.4
HTT Voltage: 1.3 (not quite sure on that, but it was more than standard voltage)
Memory: SPD, 1T, 5-5-5-15
Any thoughts on fixing the HTT problem?
Edit: Oh, and the MSI is awesome for failed overclocks. It boots up a failed OC message, then you can enter the BIOS with fail-safes and retweak immediately. Since I have a USB keyboard, I gotta reboot twice, but still better than cracking open the case for the jumper.