ASUS Z87 Motherboards - Overview, Guides and Official Support

[Dumo]

Try this settings for 2815~3050 CL12, CR1T

Lat. comp enabled
Dram swizzling bit 2 disabled
Dram init. value 59
Dram rtl chan. A = 55/55/55/55
Dram rtl chan. B = 56/56/56/56
Dram I/O chan. A = 9/9/9/9
Dram I/O chan. B = 8/8/8/8

[Shiranui Gen-An]

Oddly enough, those are the exact auto-set RTL and IO-L values I'm getting with my 4x8GB MFR kit at least. Does CR1 improve stability on this board vs CR2? I saw that mentioned in one of the guides but it seems to defy the conventional logic that setting the command rate looser would increase stability when overclocking. I've also read advice to disable Swizzling Bit 2, I wish I knew exactly what that is doing.

[Shiranui Gen-An]

The reboot loops are the most annoying thing, you don't even get a solid LED code that you can use to start your troubleshooting process.

[Shiranui Gen-An]

After taking out 2 DIMMs, switching to the black slots, much fiddling with BCLK lower than 125 but on the same strap, finding one that boots, and using initial BCLK settings, I finally managed to get the thing to POST and boot Windows with the TridentX at 3000C12, but it fails 32M instantly. And the RTL settings look wonky to me.



Well, since I got this far, I figured I'd try my luck sticking the other two DIMMs back in. To my surprise, it booted into Windows. I had enabled Additional Training so I'm not sure if that played into this or not. First attempt at 32M failed, so I upped VDIMM from 1.75v to 1.85v and re-ran...and it passed. This seriously took me the whole evening. I had best disable Swizzling Bit 2, key in these RTLs manually and save a profile because I don't want to go through all that again.

[andressergio]

After taking out 2 DIMMs, switching to the black slots, much fiddling with BCLK lower than 125 but on the same strap, finding one that boots, and using initial BCLK settings, I finally managed to get the thing to POST and boot Windows with the TridentX at 3000C12, but it fails 32M instantly. And the RTL settings look wonky to me.

well its a start shiranu there?s a lot of settings to try now all the ones i told you and what Dumo added...

check owi stable setting on his TX 2800@ 3000 to compare

[andressergio]

read this my friend

[Shiranui Gen-An]

Unfortunately, trying to manually enter the RTL values displayed and saving didn't work and now I can't boot back at the same OC

[andressergio]

Unfortunately, trying to manually enter the RTL values displayed and saving didn't work and now I can't boot back at the same OC

do this

take ou both sticks and swap them and only put one...try to boot again if it boots put the other

[Shiranui Gen-An]

Why does that work?! Man this board is quirky!

[andressergio]

Why does that work?! Man this board is quirky!

jajajaj it worked ?

[Shiranui Gen-An]

jajajaj it worked ?

Yeah but now I can only get it to boot at 3000 with 2 DIMMs and not all 4

[l0ud_sil3nc3]

^It is best to test each slot with each module and find the slot that said module goes highest in, it's just Haswell being Haswell

[andressergio]

Yeah but now I can only get it to boot at 3000 with 2 DIMMs and not all 4

yes i found this and already reported it to ASUS seems BIOS got stuck till you take out modules and swap them

and yes better use 2x4GB inmo

[andressergio]

^It is best to test each slot with each module and find the slot that said module goes highest in, it's just Haswell being Haswell

i think in this case is BIOS George...happened to me and look same to shiranu and so others, the trick i told him works as a charm

[andressergio]

shiranu i did this for you

GSkill TridentX 2800CL11-13-13-35 2T Hynix CFR@ 3000CL11-14-13-35 2T 1,825 (just used the same profile of the TeamX didnt change anything yet)




and now i took pictures for you

[Shiranui Gen-An]

tRFC 500 good grief that's loose...

No go I'm afraid with your settings. Reboot loop as usual.

[Dumo]

CFR CL9 tights probly max on air. 2.02V

[Leeghoofd]

Why are you guys wasting so much time to stabilise 3000Mhz ram clocks with amasing crap performance ?

tRDRD and tWRWR at 6-7 is such a waste

[Shiranui Gen-An]

Why climb a mountain? Because it's there.

[Shiranui Gen-An]

Well let me know if they fix this board within the next 20 days or so within my store return window, I'm going back to my "it just works" OC Force.

[Dumo]

^^Imo, the board is ok. at least with my memory clocking. CFR (in general) is a bit difficult.

If other board works then probably you should stay with it.

[owikh84]

Why are you guys wasting so much time to stabilise 3000Mhz ram clocks with amasing crap performance ?

tRDRD and tWRWR at 6-7 is such a waste

Do you have any useful suggestion to make 3000 faster?

[andressergio]

tRFC 500 good grief that's loose...

No go I'm afraid with your settings. Reboot loop as usual.

i told you i just used MFR profile of my teamX didnt tweak i did all this to help you

[andressergio]

Why are you guys wasting so much time to stabilise 3000Mhz ram clocks with amasing crap performance ?

tRDRD and tWRWR at 6-7 is such a waste

Cauz we like to do it

[Shiranui Gen-An]

i told you i just used MFR profile of my teamX didnt tweak i did all this to help you

I appreciate the help, but right now I'm frustrated and this is more work than it's worth. I don't know why it's working for you and not for me but at the moment I'm in no mood to figure it out.