Hi, i currently have a P5E motherboard and i seem to be having PCI problems. My master PCI slot wont accept any card and it wont boot. You know that ''beep'' sound that the mobo makes on startup? well if i connect a graphics card on the master slot it wont ''beep'' and wont boot. But if i connect to the slave slot then its ok. My 4870X2 was working fine on the primary slot until it started making some weird red lines and dots and then crashed and restarted. At first i thought it was the card causing the problem. So i switched to a 2600XT just to check if its true. Spent some days playing fine, and then suddenly a blue screen and BAM reboot. I havent tested the 4870X2 on another mobo or another pc but i think its the motherboards fault. So i am thinking, should i go for the P5Q deluxe? or will that drop my performance? and is my E8400 on stock clocks fully takes advantage of the 4870X2?