P5B-Deluxe and Ballistix PC2-8500 problem

graysky · Post by **graysky** » Mon Oct 29, 2007 12:13 pm

I just bought a pair of 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, 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)

accord1999 · Post by **accord1999** » Mon Oct 29, 2007 12:18 pm

Try using the highest tRFC, I believe its 42.

graysky · Post by **graysky** » Mon Oct 29, 2007 2:07 pm

no change @ 42

accord1999 · Post by **accord1999** » Mon Oct 29, 2007 2:38 pm

Change the CPU to 8x401MHz (or 7x) FSB and use the 4:5 multiplier, the P5B Deluxe switches to slower chipset timings past 400MHz. See if it's the P965 chipset holding you back.

Also, is Static Read Control enabled? Disable if it is.

tehfire · Post by **tehfire** » Mon Oct 29, 2007 2:49 pm

I agree with accord, probably a problem with your FSB strap.

What processor are you running? Would you be able to take advantage of such a high memory speed? If not, you may find it worth while to find lower latencies.