Gbeirn, I don't think the ECC bit really matters. I'd expect a motherboard that doesn't support ECC would just not read the extra 8 bits. The bigger problem is this business of registered or non-registered. I believe most server memory is registered (makes timings more reliable and reduces load on …

(Short version: I accidentally got some registered RAM and converted it to unregistered) I've just registered as I thought this might be of interest, and in case anyone has any suggestions about testing whether ECC is functioning on an Abit KA7 motherboard. Apologies if I break any etiquette. PC133r …