Warren Young wrote: > On 6/3/2014 12:26, Lists wrote: >> >> Registered/Unregistered, CAS timing, >> single/double/quad ranked, never mind voltages, and making sure your CPU >> supports it! > > All of those specs are listed in the motherboard manual. If you're > buying your RAM from a reseller that doesn't give you the corresponding > specs to match up against the mobo specs, stop buying from that vendor. > > There are vendors that will match up your specific motherboard with the > RAM that works in it, and will exchange the RAM for the right stuff if > by some tiny chance they specified the wrong stuff. (e.g. Crucial) Buried in some of them, and others, well, it tells you what it will take... and it *assumes* that you're just building the system, and buying all the DIMMs as one batch, *not* that you're replacing a failed DIMM. But you've got to match even things like cl2whatever. If it doesn't have *exactly* what's on the other DIMMs, it won't work. mark