Definition: Given an Amazon customer review, write a title for the review. The preferred titles are under fifteen words.
Input: Purchased to upgrade an old Compaq laptop from 512M to 1Gig of RAM.  Wanted to upgrade a few old laptops so I can play around with various Linux distros without messing up my main computer.<br /><br />Seemed to work well from the start, but noticed a few odd behaviors.  Some Linux software seemed to work OK, others didn't even install correctly, though they should on a Pentium 4 with 1Gig of memory.  Ran Memtest 86 that came with a Ubuntu Distro disk, and found repeatable consistent failures at a specific memory location.  Swapped the two memory DIMMs around and got even more frequent consistent failures now at another memory location.  Put the original 512G of RAM back in and it's passing the same tests with zero issues.<br /><br />Went back to the Amazon site and requested to return this memory, which they agreed to immediately, printed the UPS return info, aranged for UPS pickup, and to refund the price.<br /><br />Disappointed this didn't work, but glad Amazon was so cool about the return. Will try to do this again, perhaps with another vendor.

Great price, but persistent RAM test failures.  Returning for credit.