Its more too see if the ram can handle speed above 200mhz! When you OC the ram too far, you get errors, even if the ram is fine!
My ram wont do much more than 260mhz...altoguh it might eb the northbridge
Asus P4P800DX, P4C 2.6ghz@3.25ghz, 2X512 OCZ PC4000 3-4-4-8, MSI 6800Ultra stock, 2X30gig Raid0