I just got an EP45-UD3P for my HTPC along with an E7300, and I also got a pair of these DDR2 sticks: http://www.newegg.com/Product/Produc...82E16820231209 - G.Skill Pi Black 6400 @ 1.8-1.9v.

Unfortunately I'm having problems running the board with both sticks populated - I get a continuous series of short beeps. Either one of them individually boots fine. I've tried:

* Increasing DDR2 voltage from 1.8 to 1.9 to 1.95. The RAM's rated to run at 800mhz / 4-4-4-12 at '1.8-1.9v'
* Increasing MCH voltage by .1v (MCH ref stock)
* Running the sticks in different colored slots so that it should run in single channel mode
* Turning off auto (spd) settings and relaxing timings to 5-5-5-18
* Running memtest86 on each stick individually (they pass)
Everything else is stock.

Same result each time, continuous series of beeps.

Any ideas? This seems like a good board, and the RAM seems good as long as I only have 1 stick in. I should add that there is no overclock and I have not tried any overclocking on this rig (since I can't get it to work in baseline mode first!)