Quote Originally Posted by BenSanford View Post
I trying to run with 4 1GB memory sticks. I have version 1 of the ABIT PRO board with bios ID:14. The system boots and runs fine with two sticks of either Corsair CM2X1024-6400C4 G or with two sticks of Crucial Ballistic BL2KIT12864AA804 - at the called for 2.1v (or 2.2v), but when I install all 4 sticks I get a failure on the optional extended memory test in the boot process. (The memory listing part of my Signature isn't correct.) I'm using a E6750 processor at only 333MHz for now, and with the 1:1 multiplier, the memory is only running at 666MHz, so I'm not even pushing it beyond stock.

Is running different brands of memory the problem? Or are these boards have a problem with 4 sticks of memory?

If I need to buy additional memory of the same type that I have, would there be a preference for one or the other?

I'm running Vista Home Premium in the 64-bit flavor.
Try more vMCH like 1.37v or so and see if it will work. You shouldn't really mix brands but a few things I'd do are boot up with only 1 pair of the same brand and then set the timings and voltages manually so spd settings won't cause an issue and then use all 4. Put one brand in the blue slots and the other in the black slots.

When you set the voltages and timings use values that will work for both brands.