Cant get more than ddr 1600 stable on new motherboard

Krnt

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Dec 31, 2009
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Recently I switched from an Asus Sabertooth FX990 to a Crosshair V Formula Z for my FX9590, and I was pretty happy about the results, previously I was only able to reach DDR 2133 10-11-11-30, I was never able to reach the XMP settings of my DDR2400 16GB ram in the sabertooth.

However in the Crosshair I easily set the XMP settings and seems stable under stress tests and 3D Mark but when attempted playing Overwatch, Rise of Tomb Rider and FarCry3 I get random crashes, It wouldnt be an issue if I could get any other setting stable, but unless I set them at 1600 with the same timings, nothing else works.

DDR1866 get me a blue screen during windows startup, and 2133 has stability issues under 3D mark or any stressful workload, all were tested under the xmp timings that are quite loose for those low frecuencies.

The timings for 2400 are 11-13-13-31, I have tried auto settings with 2400 and even as low as 1600 and still cant get them stable, also have tried 2400 with loose timings with even worst results.

Last night I tried everything, I fixed the CPU in a stable clock and voltage (4.0Ghz 1.4v), loosened timings (14-14-14-38...), raised memory and Northbridge voltage, and still no luck with stability.

The only setting that appears to be stable is with manual xmp timings but 1600 frecuency.

I will try other sticks I have around to see if I can get something better

I've been keeping record of the changes in this thread: http://www.overclock.net/t/1604910/build-log-my-recent-9590-build-just-for-fun/30#post_25670232
 

Krnt

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If I'm not wrong, my CPU/NB voltage is around 1.4- 1.45, and that is actually what is shown in HWiNFO, unless you mean the NB core voltage, I always get confused with that:
61849764_CPU-NBvoltage.png
 

Krnt

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Seems that I have found my issue, I placed the sticks on the seccondary slots which seem to be 1 and 3 acording to the manual, counting from the CPU.

This is the first time I use those slots because, normally those were blocked by the Hyper 212, but Im using a Hyper 612 that has no ram clearence issues, which lead me to that mistake.

Last night I tried ddr 2400 with xmp timings, without any issue, all games and tests were completed succesfully, without the need to raise the ram voltage over the stock, however my CPU/NB voltage in auto seems to look for 1.4v always, after I guarntee stability I will look for undervolting it.

EDIT: Did the tests again after restarted and seems that there has been no improvement at all, so I'm back to 1600.