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Nvr had problems running DR 3866 on M13A. I have tried several chips with SPs 78,80,95

Currently running DR 3866 15-15-30 1.45V, IO1=1.1V, MCIO=1.2V, SA=1.4V.
View attachment 2490070

11th gen has a large deviation in the IMC quality. If that is an SP55 chip I would just sell it. No chance for a good IMC to be on that terrible silicon.
I haven't been able to get 3866 to boot on a non apex maximus formula board with my 2x16 3600 c14 bdie gskills.

Hoping future bios's will be more supportive of this... mind you, I haven't gone to extremes with voltages though running sp85.
 

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I haven't been able to get 3866 to boot on a non apex maximus formula board with my 2x16 3600 c14 bdie gskills.

Hoping future bios's will be more supportive of this... mind you, I haven't gone to extremes with voltages though running sp85.
3866 don't need extreme volts in most cases. If it can't boot, then that's it, either the board or the chip (seems not). If you can boot 4000 dual-channel then maybe you only need MCIO=1.3V, SA=1.5V to run (voltages from SP 104 and SP 93).

Can try to tweak ODT and training algorithms to see if helps.
 
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3866 don't need extreme volts in most cases. If it can't boot, then that's it, either the board or the chip (seems not). If you can boot 4000 dual-channel then maybe you only need MCIO=1.3V, SA=1.5V to run (voltages from SP 104 and SP 93).

Can try to tweak ODT and training algorithms to see if helps.
Yeah I managed to run much further same board diff cpu 10850k previously but um SA wise I think I've only gone up to 1.4v to test. mcio is currently 1.33v and I did push that to 1.4v when trying to post as 3866 as well. I did enable RTL but yeah maybe ODT will need to be tweaked but at this stage that part is a little beyond me.
 
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0801 mode 2
I just spent an hour or so trying all kinds of combos of voltages and timings with mode 2 and mode 1 etc. 3866 is a no go for me. Just boot loops or 00 or 50 code error. 3733 works fine.

Also I think I might have found the cause(or one of them) of WIFI and Bluetooth disappearing from bios. Loading saved CMO files from a different bios version. To get them back I load defaults and reboot and they were back.

Also a screen of my glorious sp55, it is voltage look worse than previous bios versions :)
 

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I just spent an hour or so trying all kinds of combos of voltages and timings with mode 2 and mode 1 etc. 3866 is a no go for me. Just boot loops or 00 or 50 code error. 3733 works fine.

Also I think I might have found the cause(or one of them) of WIFI and Bluetooth disappearing from bios. Loading saved CMO files from a different bios version. To get them back I load defaults and reboot and they were back.

Also a screen of my glorious sp55, it is voltage look worse than previous bios versions :)
leave cmd auto.. so no algo cmd training will be done.

till date i am not 100% stable on 3866c14.. meaning it wont go 1000% perfect on everyboot
could be heat as apex bdie DR are damn hot as they are next to each other compare to extreme
SR bdie much easier than dual rank on gear 1

also a good indicator of good ram chipset for RKL be it bdie or djr
they all have VERY low trfc. like you see sugi and safedisk . i will bsod if even try that
 

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Happened to me too, there's a bios option somewhere called "Boot Voltages" and increasing my vccsa and vccio mem oc boot voltages fixed the issue for me. I guess those voltages need to be higher during boot than is needed in windows.
bingo! it was the system agent voltage, bumped it to 1.35v and it works now!
 

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Since i can´t get my bdie dr run stable at 4533 yet, i decided to try to tight timings at 4400 a bit more. 14 hours of ram torture tests passed.
I have to thanks mainly to cstkl1, Falkentyne, OLDFATSHEEP and Nizzen. I started with ram oc like a month ago, with literally zero knowledge. All i did was to go back like 40 pages on this forum, same on the 24/7 ram stable thread, and ctrl-c ctrl-v all your posts. Together with github memtesthelper page, i got amazing source of your knowledge. At beginning I just copied your posted profiles, tried to customize them a bit, change something here and there and so on. Today, I have finally an idea what some settings do, what is good, bad etc. I learned a lot thanks to you. Indeed, I am nowhere near to master all the ram oc tricks like you, and I will never be able to do this, but I yet am able to do at least something and it´s great motivation for me. Thank you!
 

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Any tips on stabilizing F4-4000C15D-16GTRS at 5000c18???

I was able to get 4800 18-22-22-42 to run easy with 1.33sa at 1.505v

I went straight to 5000 with 18-22-22-42, rest on auto. Didn't seem like any permutation of SA/IO 1.1-1.5 or DRAM up to 1.6v would work for testmem5's default test #1( 0mb, 16mb) and sometimes test #0 would also fail - system would freeze and I'd have to force a restart.

19-22-22-42 was the same thing. TRAF Auto was 800+. Is there another timing/refresh that would cause this sort of lock up or am I pretty much goign to have to further loosen timings?

Learning still so if anyone has any ideas to test I would be happy to hear.

Also, looks like the F4-4800c17 is available to preorder now: G.Skill 16GB G.Skill DDR4 4800MHz CL17 Memory Upgrade Kit
 

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Any tips on stabilizing F4-4000C15D-16GTRS at 5000c18???

I was able to get 4800 18-22-22-42 to run easy with 1.33sa at 1.505v

I went straight to 5000 with 18-22-22-42, rest on auto. Didn't seem like any permutation of SA/IO 1.1-1.5 or DRAM up to 1.6v would work for testmem5's default test #1( 0mb, 16mb) and sometimes test #0 would also fail - system would freeze and I'd have to force a restart.

19-22-22-42 was the same thing. TRAF Auto was 800+. Is there another timing/refresh that would cause this sort of lock up or am I pretty much goign to have to further loosen timings?

Learning still so if anyone has any ideas to test I would be happy to hear.

Also, looks like the F4-4800c17 is available to preorder now: G.Skill 16GB G.Skill DDR4 4800MHz CL17 Memory Upgrade Kit
Binned bdie. Know people who can post it but not stabilise on their kits.
 

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Binned bdie. Know people who can post it but not stabilise on their kits.
Well, I guess I am in that boat for the most part.... I was able to post and run AIDA 90% of the time... but doing other things just hard locks... I guess ill try messing with refreshes and loosen the other timings.

So between 4800c18 and 4000c15... is the 4800c18 the better bin???
 

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Well, I guess I am in that board for the most part.... I was able to post and run AIDA 90% of the time... but doing other things just hard locks... I guess ill try messing with refreshes and loosen the other timings.

So between 4800c18 and 4000c15... is the 4800c18 the better bin???
I think this is luck of draw too, I’ve seen some strong 4000c15 kits. The price of 4800c18 is quite high so can maybe bin a few 4000c15 at that point but it’s all lucky really.
 

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Just flashed, new µCode too. Now µCode 40
Going to have to test if this impacts performance in any way.
Let me know if it changes performance at all or prior memory profiles. Somewhat happy with the results im getting from these kits and wouldnt want to lose them. Able to boot 3866 G1 with my SP85 and 4800c18 which is meh I suppose
 

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11900K in stock at Best Buy now, $549.99 plus tax
 

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Well, I guess I am in that boat for the most part.... I was able to post and run AIDA 90% of the time... but doing other things just hard locks... I guess ill try messing with refreshes and loosen the other timings.

So between 4800c18 and 4000c15... is the 4800c18 the better bin???
Only my first 4800C18D was good. The 2nd and 3rd kits were just junk.
 
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