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post #951 of 1633
Any specific reason why you have VDDC18 set to 1.84v? I use more or less the same configuration at multiplier 39.25 without the VAXG LLC.
post #952 of 1633
Quote:
Originally Posted by CryWin View Post

I'll try that too just to prevent any future problems. I had disabled the power saving stuff for the ethernet controllers already.

On that note if you are in device manager and disable power saving in the USB controller section as an example... you will also find similar settings under Human Interface Devices. Some can be set to wake the system but most of the usb devices (like a mouse) will also have a power saving setting in there... that isn't disabled just because you do it somewhere else.

*edited for some odd typo's lol*
post #953 of 1633
@Secret Dragoon: I was just trying to give the 1.8V supply a little upward nudge to counter some Vdroop. Could probably stand to nudge it a little more.
post #954 of 1633
What was experiencing the droop? The 1.8v? Was this causing any crashes or issues booting? This and VDDC are the two settings I haven't really touched while trying to overclock the board.
post #955 of 1633
I have G.Skill 2800mhz ram (F4-2800C15D-16GVR), Aida says its Samsung Ram, but I can not get past 2400mhz at all. XMP does not work, and I have to manually set 15/15/15/35 timings and 1.25v to get 2400mhz.

If I bump it up to 2666mhz or 2800mhz it won't boot at all and requires a cmos reset or sometimes complete battery pull to get it to boot again.

I have been able to get 2666mhz if I run the Ram in single channel mode only.

Anyone else have any tips on getting even 2666mhz on this Ram? Thanks much.

Also my CPU does not downclock at all if the multiplier has been set to anything but AUTO.



https://www.newegg.com/Product/Product.aspx?Item=N82E16820231877&cm_re=gskill_2800mhz-_-20-231-877-_-Product
post #956 of 1633
Quote:
Originally Posted by DADDYDC650 View Post

I've followed the steps posted and my 1800x downclocks but rarely.


Funny thing is it does downclock but not half of 3.825 it just goes - 50mhz lmao... And voltage offsets don't work I think. Loaded bios stock. And just changed multi to 38.25 and saved. VRebooted to bios. Auto setting pulls 1.380v off the bat. Should be something like 1.225 or something. Same goes if I set it to normal / and no offset. Just automatically gets 1.380v
Quote:
Originally Posted by teclado View Post

I'm running a 1600X. Maybe it has something to do with Ryzen 5 vs Ryzen 7. Oh well. My idle temps are in the 30s C, so clearly the power dissipation is lower. It's just CPU-Z, Ryzen Master, and HWinfo that all report my Vcore and clocks are stuck. Also if I open the windows and Ryzen power plans, the options for min and max processor state are gone. So maybe it's just a reporting issue?

Some good news from me, however: I managed to get 4.0GHz stable for about an hour of Prime95. CPU-Z showed my Vcore between 1.392 and 1.404. I just picked a number for my voltage offset, it's possible that I could go lower. Requires more testing. thumb.gif CPU temps were hovering around 70C with my Noctua air cooler.

One bios parameter that I had previously left untouched was the VAXG LLC. I thought the Vcore LLC was the only one we had to change. Apparently not. With the VAXG LLC untouched and Vcore LLC = medium, I had to feed my chip 1.43V for 4.0GHz, and even then I only got 10 minutes of Prime95 before a crash. With both Vcore and VAXG LLC = medium, I got my ~50 minutes of Prime95 stable at a lower Vcore (the aforementioned 1.392 - 1.404). I'm having a hard time figuring out exactly what "VAXG" is. Google is not really giving me a clear answer. The motherboard manual doesn't say much about it either.

Nice. Was wondering what VAXG VDDP does as well.
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Zangief
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Zangief V2
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CPUMotherboardGraphicsRAM
AMD FX-8350 BE Gigabyte GA-990FXA-UD3 Gigabyte GTX970 G1 Gaming Corsair Vengeance Pro 
Hard DriveHard DriveHard DriveCooling
Western Digital Black Western Digital Blue Samsung Evo 850 Noctua NH-D15 
OSMonitorKeyboardPower
Windows 10 Pro x64 Asus 23" vx239H Corsair Vengeance K70 (Cherry Red) Corsair HX750i 
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post #957 of 1633
Quote:
Originally Posted by kushorange View Post

I have G.Skill 2800mhz ram (F4-2800C15D-16GVR), Aida says its Samsung Ram, but I can not get past 2400mhz at all. XMP does not work, and I have to manually set 15/15/15/35 timings and 1.25v to get 2400mhz.

If I bump it up to 2666mhz or 2800mhz it won't boot at all and requires a cmos reset or sometimes complete battery pull to get it to boot again.

I have been able to get 2666mhz if I run the Ram in single channel mode only.

Anyone else have any tips on getting even 2666mhz on this Ram? Thanks much.

Also my CPU does not downclock at all if the multiplier has been set to anything but AUTO.



https://www.newegg.com/Product/Product.aspx?Item=N82E16820231877&cm_re=gskill_2800mhz-_-20-231-877-_-Product

Those timings do not look right. 3200Mhz Samsung B-Die is usually CL14 afaik. 2800 should be like C12(?).
post #958 of 1633
Quote:
Originally Posted by Secret Dragoon View Post

What was experiencing the droop? The 1.8v? Was this causing any crashes or issues booting? This and VDDC are the two settings I haven't really touched while trying to overclock the board.
I noticed that it was a little low (in HWinfo), reading maybe 50mV below 1.8V (going off my probably flawed memory haha), which is to be expected due to your standard losses in a power supply. I was just trying to get it pretty close to dead on 1.8V. I have zero clue if that actually helped anything.

@kushorange: my guess would be that maybe a little more RAM voltage might help. Maybe try 1.3V or 1.35V? Although I hesitate to suggest that, since the RAM is specified for 1.25V. I wouldn't think it would hurt anything short term. Otherwise maybe looser timings. You could go with extremely loose timings just to see if that helps get you to 2800MHz. If that works, start to dial them in.
post #959 of 1633
Quote:
Originally Posted by Secret Dragoon View Post

Those timings do not look right. 3200Mhz Samsung B-Die is usually CL14 afaik. 2800 should be like C12(?).

I did some research. The RAM is samsung D-Die not B-Die. Since it is Dual Rank and I'm using 2 sticks it will only run at 2400mhz. I did however tighten the timings quite a bit at 2400mhz.



Also I got the CPU to downclock by changing the CPU voltage to 1.35 and then the SOC voltage to "Normal" and Offset to "Auto."

That may help other people if they have the same issue.

Edit:
@ Teclado - I have tried multiple voltages all the way up to 1.35v. The board just does not like this RAM at anything above 2400mhz. Tried SUPER lose/tight timings and leaving it as auto. XMP on and XMP off with the settings changed all which ways. It would only boot at 2133mhz or 2400mhz.

If I used 1 stick or used 2 sticks in single channel I could get to 2666mhz.

Seems to go with this chart that I found:
Dual-Rank w/ 4 DIMM: Up to 1866 MHz
Dual-Rank w/ 2 DIMM: Up to 2400 MHz
Single-Rank w/ 4 DIMM: Up to 2133 MHz
Single-Rank w/ 2 DIMM: Up to 2667 MHz
Edited by kushorange - 4/25/17 at 2:02pm
post #960 of 1633
I thought VAXG LLC was for integrated GPU voltage. I am not sure though.
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