thats why i want to know what RAM you are using, some RAM love voltage up to 3.5V, others can only handle 2.9V. Open up your computer and take out the RAM and take some pics so i can see them.
They are, they were the cheapest DDR400 512 I could buy, wish I had more knowledge back then And with the ram timings, do you mean put them to 3-3-10??