Adding more ram - need help

[mrmjs]

Hello,

I have these sticks now, I'm wanting to add 4gb more (64bit OS) so I thought I'd buy 2X2GB sticks, I find these but I notice the timing is different... is it ok to buy this ram or will there be some kind of conflict??

 

[GhislainG]

Since they still are available, why not order the same modules that you already have? It sometimes is challenging to get 4 modules working reliably; using 2 different types won't make it any easier. You'll have to set the timings at 5-5-5-18 and the voltage to 1.9 or 2.0V.