Although some brands (say, Crucial, Kingston, and PNY) are considered 'better' (definition various, but usually corresponds to reputation) than others (say, K-Byte), it really doesn't matter what brands of memory you pair together as long as they have the same specs. (Side note: Click here to see if latency is something you should consider.) And, unlike Dell's PDAs, their PCs don't require proprietary technology, allowing you to purchase any brand from any company you like. Thus, I say, shop away!
Hope this helps,
i have a dell dimension 8400 with 1gb of pc4200 533mhz ram. my question is,if i add another gig of ram does it have to be from dell, or can i add another brand, as long as it is the same specifications as my existing ram. please advise. thank you!