All three you have are screwed liked mine. See how they are rejected. Look at the fsb and the rated fsb. Also look on the left beside freq. It shows your actual speed which is right but beside that it shows the fsb and multi. IF you multiply them together you would get twice the speed the proc is running. The fsb needs to show half what cpu-z is reporting. Like in my case it should be 200 not 400. Now I ran it on my A7n8x system, which has the same amount of mem, Same cpu speed and same chipset. Only difference is the Asus system is running an actual xp 3200+ where the Nf7-2 system is running a xp-m oced to xp3200+ speeds. The overclock may have something to do with it. Here's a screenshot of the A7n8x system. Notice the fsb speeds.