Answer to "Can I use PC3L 12800S RAM in place of PC3 10600S RAM"We faced the same problem with PC3 and PC3L memory but we plan to use both of them on a dual motherboard (with 2 processors) where are 2 separate areas with 6 banks of DIMM for each processor. So our idea is to use PC3 sticks on one area which suppose to deliver 1.5 V for them, and PC3L sticks on the other area which suppose that electronically will deliver only 1.35 V !!! Is that a good idea, will work as I described ?! I have to mention that the memories has different frequencies, 1066 and 1333 MHz, but this is an software issue and we accept to work at 1066 Mhz if will work together from hardware point of view !