MemTest64 is an online tool that tests your computer's memory for any errors or issues. It is designed to detect any memory problems that may be causing your computer to perform poorly. It works by running a series of tests on your RAM and analyzing the results. It can detect a variety of problems such as bad blocks, incorrect timings, and memory leaks. It can also be used to compare the performance of different RAM modules. It is a free tool, and it can be used on both Windows and Mac systems.
Discontinued LAST UPDATED: 09/27 / 2013See http://www.memtest.org/