P5B-Deluxe and Ballistix PC2-8500 problem

[graysky]

I just bought a pair of BL2KIT12864AA1065 (http://crucial.com/store/partspecs.aspx?IMODULE=BL2KIT12864AA1065) and they will work in any mode except the fastest two. These work fine: 1:1 (533 MHz), 4:5 (667 MHz), and 2:3 (800 MHz). If I boot them in in 3:5 (889 MHz) or 1:2 (1,066 MHz) windows will not start.

If I boot into Memtest86+ V1.70 (http://www.memtest.org/), they give TONS of errors in the faster two modes, but are just fine in the lower 3 modes... I've tried manually setting the timings/voltage and also letting the board do it with no luck either case. I'm using 5-5-5-15-4-30-10-10-10-11 @ 2.25 v initially.

I have a P5B-Deluxe running BIOS 1215. Anyone else out there have this board with these sticks? I'm thinking since I get errors at the higher modes, it's my board, not the memory.

Opinions are welcome.

Thanks!
Additional info: q6600, x1950 pro 512 meg. I normally run the system @ 9x333 @ 1.2625vcore with my old memory (DDR2-800 ballistix @ 1:1 with these timings: 4-4-4-12-4-20-10-10-10-11)

[maxfly]

i would start by testing one module at a time 1:2 with memtest86+.you could go so far as to test each stick in all four dimms but it sounds like one of them is faulty unfortunately.i would get ready to rma them tbh.
if niether can pass memtest at stock speed,voltage and timings it could be the mb but you wont know for sure without testing them in another mb.

[Evilsizer]

you subtimings might be to tight, dont mess with those. just leave them at auto in the board. have you tried the other set of slots for dual channle? some boards are picky about what slot high speed ram go into... either that or one of the slots on the board might be going bad, asus had this problem for a while. i dont recall the board this issue was with though.