My Compac runs @ 312.5MHz with 1 HW error maybe every 2 days. Decent USB charging hub that is supposed to provide up to 2.5A per-port groups, 7 ports for total of 60W. It's also feeds 2x of Sidehack's (Gekko) 2PAC sticks

Yes, even with a fan blowing on them they are quite warm but then again, seems mining ASICS love high temps.
Yeah, I noticed there seems to be a warmup period and that over the first couple of hours they continue to slowly creep up in hashrate (my (4) currently hashing at combined 61+ average). I was going to just keep them all at the current voltage (been too lazy to apply my voltmeter as the setup is under my worktable and a PITA to work on) and find my ceiling, but if these temps continue, I seem to have more headroom than I thought. 300+ would be sweet!