Summary: Paying only $6.99 for a 512mb stick of ram would be too good of deal; well it was, tried everything reseating, running on it's own and so on with the same results PC would not boot because of hardware failure - ram. Avoid cheap deals unless you can find someone out there that has high marks; which usually results in high standards.
Cons: 1 stick out of the 4 I ordered was DOA. It would blue screen at random times. At first I thought it was the memory controller but nope tried it in a different system and same problem. And in the time it took me to troubleshoot I have gone over the return time.
Summary: I love how I write a review of this seller and they respond, but I can't follow-up. They make it out as if I'm the fool for not reading every bit of small print they use. Read my earlier 1 out of 5 review of this seller. They advertise Crucial memory, but ship you Samsung memory. Sure, they tell you it's Samsung IF you go to their Seller page and click on a small link that tells you about the "bait and switch" they pull.
Cons: I've been having some issues finding RAM that is compatible with a motherboard I have purchase. So whilst searching, I found myself at Crucial's website, this was amongst the list of RAM "100% guaranteed compatible" with my motherboard... and guess what... it's not.