What setting to use for F3-14900CL9D-8GBXL at 1333/1600?

[justthinking]

G.Skill Ripjaws X F3-14900CL9D-8GBXL

Here is the SPD table, which I don't fully understand why the value is not the typical standard memory frequency like 533/666/800 but some odd numbers..

457MHz - 6-6-6-16
533MHz - 7-7-7-19
609MHz - 8-8-8-22
685MHz - 9-9-9-24
761MHz - 10-10-10-27
838MHz - 11-11-11-30
933MHz - 9-10-9-28 (XMP)

When I set my RAM speed at 1600 and dram setting at Auto, I got the lousy timing of 11-11-11-30, I would like to know what timing I should/can use if I am running this memory at 1600 (on P55) or 1333 (on H67)

[Tradesman]

Do you have the latest BIOS? Regardless, with these sticks should be able to run frequencies you indicate (both using 1.5 DRAM Voltage and CR of 2T) for 1600 9-9-9-28 and 1333 at 8-8-8-25, in both cases you might well be able to drop the CL by 1 i.e. might be able to run 1333 at 7-8-8-25 or thereabouts and may be able to run at 1600 with 8-8-8-26 (in both alter instances may have to raise DRAM voltage a hair (maybe .05)

[justthinking]

I can only get this set to run at 1600 stable w/ a lousy 9-9-9-24-2T timing..
When changed to 8-8-8-24-2T, got bunch of errors within minutes of running memtest86+

Really disappointed, you would think if the set can run 1866 stable w/ 9-10-9-28-2T, then should have no problem running at tight timing at 1600..

[GSKILL TECH]

What motherboard and CPU? What DRAM Voltage are you using?

Thank you
GSKILL TECH

[justthinking]

Tested on Asus P8P67 PRO & i5-2500K

1600/8-8-8-24-2T@1.5v = bunch of errors within minutes

1600/9-9-9-24-2T@1.5v = stable

1866/9-10-9-28-2T@1.5v = stable

For reference purpose & to make sure it is not the motherboard, I borrowed a friend's CMZ8GX3M2A1600C8 (corsair vengeance ddr3-1600 8gb c8 kit)
Had no problem running the corsair with 1600/8-8-8-24-2T@1.5v

[GSKILL TECH]

Because tRCD (second number) should be 9.

Thank you
GSKILL TECH