Old Intel Board

Hi, today I got an old Intel motherboard D915PCY. I want to overclock it, but there aren't any overclocking utilities in Bios. The only thing I am able to do is to change Memory timings. I installed newest Bios, but it didn't help. I also tried some software (SysTool, ClockGen), but both of them didn't specify that motherboard. What's the problem? I don't think that this motherboard can't be overclocked.

The only board Intel put any overclocking stuff on is the D975XBX (version 1 and 2)...

Clockgen might work if you play around with the different PLL settings, but there is no guaranty there either...

Intel board are not known for there OC ability .....they are pretty stable boards though...