Ive got a Pentium 4a 2.0GHz@2.5GHz on a jetway S447 motherboard, at 125x20, ive had it at 130x20 (2.6GHz) and it ran ok, but when i upped it to 133+, it wouldnt work when i tryed it with 1x512MB PC3200 and 1x256 PC2100, but now that ive bought another 512MB PC3200 stick, and got rid of the...