Quote
my 2500+ is set on 1833 default
Probably due to the Barton core.
Quote
question 1: what is the green and red light on the mobo for?
Probably the diagnostic LEDs, just have a look at your manual.
Quote
also, I noticed that when I change the fsb speed, the memory frequency goes up aswell
Yes that's the default behaviour. Normally on the overclocking section of the BIOS, you also have an option to lock the bus of the rest of the system and raise the CPU *alone*. Peek into your manual. And, yes I've heard that the Abit-NF7s is pretty friendly to overclockers.
Quote
seems to work fine on fsb settings of 140
I've run my 2400+ up from its native frequency of 2GHz to 2340 MHz (153 MHz FSB), and it runs stable.
Did it on my MSI nF2 based board. I used just the standard fan that comes with the processor in the retail box pack (though I had my system cabinet kept open just in case it overheated) and it ran at 2.34 GHz at just 45C temperature.
Didn't use any special RAM modules, just the common PC2100. The MoBo takes care of the necessary voltage on mine. And didn't unlock the CPU multiplier, I just let it be as it is.
Keep in mind that even the AthlonXP 3200+ is clocked at just 2.25 GHz (but the difference being that it has 512KB L2 cache, FSB200, barton core).