i can't talk comfortably about the P5Q-E since i am not that familiar with the board.
the Tpower board is easy to get high overclocks once you take the memory out of SPD and start setting them independently...you don't have to change much; two or three settings...i will give you them later...not feeling very good at the moment....of course, i only used PC6400 memory...if you got some PC9600 (DDR 1200 Mhz) that will open it to very high FSB's.
my max FSB with the highest useable multi is 8.5x and 515 FSB on my E8500...that gave me 4382 Mhz.
the board is engineered well, IMO...the TPower software that changes voltages and FSB in windows desktop works good...the only thing, do NOT do "multiple" clicks on the "Plus" or "Minus" signs, just click ONCE if you want to make a change...there is about a 5 second lag for resultant increase or decrease to show up...once you see it show up and you want more or less, click it but only once each time and then wait (that's my recommendation)...i did it a few times in a row for vcore and the next thing i knew, it shutdown...just a warning to the wise.
the other thing i like about it for the TPower model is the extra 70 mm cooling fan plus a vertical heatsink that comes with it to add (screw it on) additional cooling capacity for the PWM area...the fan appears to be a delta fan because of the whine at full speed...it is a little noisy when it is running at 4.5K rpm but you have a fan header that is controllable from the bios to set a range of temps for hi/lo which in turn reduce or increase the rpm as temperature changes...i have mine setup at about 2.8K for idle.
another thing: the bios has the capability to save as many 10 different CMOS settings, so, you can try various overclocks and if it fails, the board will reset itself...in that condition, you have to re-enter the bios and recall a good overclock setting and start over again making your changes.
the only draw back that i see at the moment is for the monster 9800 GTX cards which overlaps the backside of the board...my 9800 goes right over the middle of the Sata Ports so you would need to hook the Sata cables in first before inserting the VC...be aware that the ports are configured at 90 degress so the plug-in openings will be facing to the rear of the case....i am sure other people will find other little nagging annoyances about placement of certain ports, but not evey board is perfect unless you pay $400 for it!;)
