Motherboard and Ram compatibility question

I recently built a new computer, 1st timer here....

I may have made the mistake of getting incompatible RAM with the motherboard, but... it sort of works.

this is what i have for the motherboard: http://www.newegg.com/Product/Prod [...] 6813130180

this is what i have for RAM: http://www.newegg.com/Product/Prod [...] 6820231145

After often crashing the first couple days, I took out one of the sticks of RAM, and it has been stabilized a bit better, although I get wicked freezing every now and then that makes my computer reboot on its own....

I recently realized, today, that my motherboard supports DDR2 800, and my current RAM is DDR2 1000.

Is this a big problem and possibly the reason why my computer has been rebooting and freezing?

If not, what should I do??

If so, should I get this (DDR2 800): http://www.newegg.com/Product/Prod [...] 6820231122



Sorry if this is a total newb question, but I just want to make sure I'll do the right thing, whatever that may be.

Memory Standard DDR2 1066

That's what it says on the specs of your mobo. Yes, your current RAM is responsible for the problems. Correct RAM is very important.

Buy DDR2 1066 RAM