|I have that exact same board in my Linux system. It accepts up to 3GB RAM (1GB per slot) & overclocks extremely well. It only supports single channel memory so there's no need to worry about matched pairs.|
There is no Athlon XP that runs at 1.3GHz except for maybe the 1500+ which runs at 1.33GHz (10 x 133MHz). My guess is you have a different CPU & have the clock settings wrong. You may a 2100+, 2700+ or 3000+. All 3 of those CPUs use a 13x multiplier but each uses a different frequency (133MHz or 166MHz). You probably have the CPU frequency set at 100MHz. If my guess is correct, there's a jumper on the motherboard that will have to be changed. It's also very important to maintain a FSB:DRAM ratio of 1:1.
The 1st thing you need to do is determine which CPU you have. Try using this:
BTW, I tried running Win7 32-bit with my A7N8X-X system (AXP-M 2400+ overclocked to 3200+) with 1.5GB DDR400 at 1:1 & it ran reasonably well.