Overclocking Help

[caleb2001r]

Hey guys,
Perhaps one of you can help me out. My apologies if the answer to this is simple, but I just started learning to overclock so please bear with me!

I just upgraded from a P4 2.4ghz, to a Pentium D 805 2.66 ghz for the dual core and 64 bit support (overclockability too)

I was stupid and purchased a board with the old memory solution so I wouldn't have to spend so much. It supports an AGP card, with DDR (not DDR2), so I could grandfather a lot of my old hardware over. (x800 pro AGP, 2x512MB Kingston ValueRam DDR PC-3200)

Well, the board I bought is a MSI 865GM3 - V, and I think it sucks. I can't change vcore, ram voltage, and it peaks at a 165 allowable CPU bus (805 can possibly get higher that that from what I've read).

My question is this: It's not running stable past 3.0ghz or so. My memory is DDR400, which means that the board clocked the memory on a 5:4 ratio, running it at 166mhz instead of 200mhz since the chips a 533FSB and not an 800, and the bus speed on the chip starts at 133mhz with a multiplier of 20x. (hope that makes sense). The system is fully stable this way.

Theoretically, shouldn't I be able to move the chip bus speed up to 160, and run the Ram at the rated speed of 200mhz? My temps on the CPU hardly move at all (not past 55 degrees), and am in fact getting better cooling this Friday from Newegg.

I just don't understand why my system won't stay stable when overclocking.

Note: The vcore at currently 1.33. CPU allows a 1.4 max.

Any ideas?

I wish I would have just spend the money and went to DDR2 and got a board with a decent overclocking options. I'm just trying to do me over for now.

Thanks for any help in advance.

 

[caleb2001r]

Should I list more of the PC's features? Will that help?