bit off-topic but I had 4x1gb of nice dual sided 8500 Ballistix - wasn't exercising it hard .. I think 1100 @ 2.15V and 850 CAS4 at 2.1V

RMA'd one pair got a single sided pair back .... wouldn't even post at 870 CAS5 !! .... 2.15V ! lol I think I managed 840 CAS5 .. and then 10 seconnds into Memtest ... monitor turned off and PC emitted beep...beep..beep..beep - no memory signal. Finally got all 4 working at 700 MHz CAS5 !! lol. Tested them on their own and couldn't even get close to 1000 CAS5 even at 2.25V !

contacted crucial and they were more than willing to RMA again (costs to send to them again though !!) - but when I asked for dual sided (none left in UK apparently) as I thought they were incompatible to be used dual sided with single sided at same time on same mobo ... they basically said "not our problem"

what RAM ICs the new single sided stuff use I don't know - but sure ain't D9 Micron ... and I feel cheated that I've now lost 1 pair of decent RAM and its been repalced with something far far cheaper