Mixing memory

Ive never had any problems mixing different brands of name brand RAM. I think most of the problems are with the off brand broker grade stuff.
 
I would suggest getting the same brand that you currently have, or upgrading it comepletely. I have also not had problems personally, but have come across many machines who have problems. It's up to you.
 
I foregot to mention that you should check with your motherboard manufacturers website to see if they reccomend particular brands or brands that cause problems.
 
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