CPU Type: 2x Intel pentium III Xeon
CPU name: Intel(R) Core(TM)2 Quad Q8200 @ 2.33GHz
CPU Clock: 2339.74 MHz (original: 2333 MHz)
CPU Multiplier: 2.5x
CPU FSB 935.91 MHz (original: 100 MHz, overclock: 836%)
Check this is accurate. For me it is not.
This CPU information is very very strange. Usually overclock lowers life of the chip. Speaking of it's life if it is 15 years if you lower it to let's say 8 years it is not so big deal anyway. You will change system for that time.
Overclock is not easy to do and have to be done carefully. You can damage the chip and if you do it you void warranty. So if you do not know what you do better do not do it. Some products come clocked by manifacturer.
Overclock comes with more heat because you usually try to make CPU to run on bigger frequencies. This result more performance, but more heat too.
Sometimes the battery that keeps bios memory powered stops to work. If that happens you can see some instability sometimes, because bios can forget his settings and get some default one which may be not so good. So this can be added into check list too.