p5e64 pro +cellshock 1866 problem

[KanGaXx]

hello guys

yesterday arrived this motherboard: p5e64 ws pro
with cellshock pc15000 1866 blue kit.
cpu : e8500 (wall 620 on commando liquid cooling)

i assemble all but i had an HUGE problem.

i tryed ram in Single Channel and they both arrived ad 1040 8-8-8-16 with only 1,9v.
on DUAL CHANNEL i cant get 1800!!

i explain better:
i tryed this bios settings: 460 fsb
dram freq: 1:2 at 18xx
voltage: 1,9v
cpu: safe position

and the system is totaly UNSTABLE.
if i put 460 mhz on FSB with 1,49VNB all ok but if i try more voltage like 1,51 or more boot always fail!!!!!!!
for 470 1,51 is ok but 1,53 fail....
for more then 500 fsb on dual channel motherboard wont boot with any voltage.
the problem is that at 1,49/1,5vNB voltage the system is unstable and give blue screen at windows startup.


on single channel or dual channel but with low ram frequency i can reach 580 fsb....


why i have so much problems in dual channel mode with this motherboard ?
on single channel is all ok.

i tryed to change slots , bios ecc ma nothing.

PLEASE help ME

[xMrBunglex]

hmm. i know your memory is supposed to go in the black slots if you're running an XMP profile or if you want high speed. don't put them in the yellow slots. beyond that, i'm not sure. DDR3 is touchy stuff. it took me a month to fully figure out all the nuances of my kit.

[KanGaXx]

well they are in black slots...

if i put mems in 1:2 beyond 460 the system wont boot with any voltages on chipset.
i i use single channel mode the sistem is ok at all voltage and all frequencies.....

[xMrBunglex]

are you going to the 400 boot strap? if you're trying to stay in the 333 boot strap, that could be your problem.

[KanGaXx]

i use the 333 strap, if i put 400 wont boot
but with 333 strap i have this problems...max 450 on 1:2 dual channel... if 460 mass crash.

what u think ??

[KanGaXx]

please someone help me....

[xMrBunglex]

i think your problem is the boot strap, but i don't own that board and can't be too much help to you. you'll probably find more assistance in the Intel section:

http://www.xtremesystems.org/forums/showthread.php?t=160849