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Helpful ReplyHot!Z370FTW and Corsair CMK16GX4M1B3000C15

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dreamneedle
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2018/05/19 08:28:15 (permalink)
I recently got  a Z370 FTW (1.06BIOS) and an i7-8700 (non K). The Corsair RAM (2x16GB) was bought months ahead on a Christmas sale.
Right now RAM is running on AUTO BIOS settings at 2133. Whenever I switch to the XMP-3000 profile, the PC won't boot (error code 4C) or beep anymore. I tried with only one DIMM and no luck.
 
Any ideas what I should try next? Or should I just give up since the DIMMs are not on the QVL list.
post edited by dreamneedle - 2018/05/19 12:42:36
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Sajin
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2018/05/19 13:44:23 (permalink)
Try setting the ram up manually.

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K-Dimitri
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2019/08/06 03:28:13 (permalink) ☄ Helpfulby dreamneedle 2019/08/07 01:43:29
dreamneedle
Right now RAM is running on AUTO BIOS settings at 2133. Whenever I switch to the XMP-3000 profile, the PC won't boot (error code 4C) or beep anymore. I tried with only one DIMM and no luck.

 
Did you find the solution? Now mine does the same - CMK16GX4M1B3000C15. Won't boot if I swhich XMP profile only..
 
But! ... I can run 3200MHz in dual channel mode and computer starts if I set up timings manually: 16-18-18 (instead of 15-17-17).
 
To do this, I need to clear CMOS put 1 stick in slot 1 - boot into UEFI (yes it works!), set up (select) XMP 1st profile 3000MHz and without exiting set up 3200MHz and timings 16-18-18. Then save and reboot. It boots up with POST codes: 22-55- couple of times and then boots to Windows. After it boots to windows it works OK without any issues. Then I need to shut it down and add one more memory stick in slot 3. Then it boots fine and goes through all stress tests including AIDA and Intel® Processor Diagnostic Tool with PASS for all check items.
 
If after that I change memory settings to default in UEFI - computer doesn't start with the post code 4C
 
Strange thing is that it works that way only in slots 1 & 3 (instead of 2 & 4). If I put 1 ram stick in slot 2 it doesn't boot (neither if I put 2 of them in slots 2 & 4) with POST codes 16->3E->4C.
 
post edited by K-Dimitri - 2019/08/06 03:35:03

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K-Dimitri
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2019/08/06 03:39:59 (permalink)
one more..

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dreamneedle
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2019/08/06 14:21:56 (permalink)
WOW! Good work, Dimitri!
I'll try to go through your steps this weekend and see if I can get it working. Do I need to update BIOS to 1.13?
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K-Dimitri
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2019/08/06 18:15:00 (permalink)
I have 1.13.
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K-Dimitri
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2019/08/07 02:50:35 (permalink)
You can try changing your ram settings only, without changing slots.
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dreamneedle
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2019/08/07 12:03:54 (permalink)
Looks good!
RAM modules were already in slots 2 and 4. Selected XMP1 which changed voltage to 1.35V, and then switched over to 3200/16/18/36. Booted just fine.
 
Thanks again for your update, Dimitri!

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Cool GTX
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2019/08/07 12:36:22 (permalink)
What ? 
 
OP = May 19, 2018 11:28 AM
 
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dreamneedle
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2019/08/07 13:54:30 (permalink)
With RAM in 2133 mode.
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Cool GTX
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2019/08/07 14:25:27 (permalink)
BR awarded to K-Dimitri
 
Glad you were able to get it to work

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K-Dimitri
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2019/08/07 22:28:18 (permalink)
Good to hear that you've got it resolved and working!
 
My problem still exists: slot 2 isn't working.
 
If someone could give me a clue of what it is when I can run 2 RAM modules in dual channel but can do it only in slots 1 & 3, which means that there is no issues with socket pins because CPU sees/uses both channels. Moreover, I can use slot 4 with one module installed and it works.
 
The problem is that slot 2 is unusable. To sum up how it starts and runs:
1 RAM module in slots 1, 3, 4: works at auto settings (e.i. 2133), doesn't work at XMP1 profile of Corsair CMK16GX4M1B3000C15, but is fine and stable if I set manually 3200MHz and 16-18-18 for timings (note: need to adjust after choosing XMP profile, because XMP sets secondary timings also).
1 RAM module in slot 2: DOES NOT work under no conditions and neither above mentioned trick helps.
2 RAM modules in slots 1, 3: DO NOT work at auto settings (e.i. 2133MHz), but DO WORK only after I've set up memory speed and settings manually to 3200MHz and 16-18-18 respectively, for 1 RAM module at first (in any slot, except 2). and after that add second RAM module.
2 RAM modules in slots 2, 4: DO NOT work under no conditions and neither above mentioned trick helps.
 
So, any thoughts are highly appreciated.
 
P.S. The images show:
slot 2: 4C (fails to boot)
slot 4: Ab - in bios picture shown, boots to windows normaly
slot 1 and 440 - CPU temperature, boots to windows normaly
post edited by K-Dimitri - 2019/08/07 22:57:50

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K-Dimitri
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2019/08/09 22:14:29 (permalink)
Just for the full picture if anyone needs it. Here is the full list of timings of two modules in dual channel (1+3 DIMM):
 
post edited by K-Dimitri - 2019/08/10 05:38:51

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K-Dimitri
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Re: Z370FTW and Corsair CMK16GX4M1B3000C15 2020/07/08 05:23:34 (permalink)
Eventually, it works as it should - in slots 2 and 4.
Picture below. Cannot pass stress test, but starts and works. (see other test results in the list).
 

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#14
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