AMD Ryzen 7 3700X, 3800X and Ryzen 9 3900X - Page 76 - Overclock.net - An Overclocking Community
Forum Jump: 

AMD Ryzen 7 3700X, 3800X and Ryzen 9 3900X

Reply
 
Thread Tools
post #751 of 757 (permalink) Old 01-16-2020, 07:26 AM
New to Overclock.net
 
Oversemper's Avatar
 
Join Date: Feb 2019
Posts: 32
Rep: 1 (Unique: 1)
Quote: Originally Posted by Pedros View Post
question ... is it normal the 3900x idles at 39-50ºC ?

Is there anything we can do to get these temps lower ( no manual overclock for now ) ?

Thank you!
Just assembled 3800x+asus x570-f. EKWB custom water. Idles at the same temps, this is because auto voltage can hit 1.5v. So these 39-50C is internal transient temperature which can be lowed only by undervolting. Mine hits 4525 Mhz on 6 cores (not simultaneously, just statistic during the use), the remaining two "bad" cores hit 4450. These frequencies are the combination of good cooling with unrestricted autovoltage. Also I have PBO activated and set to +200Mhz mode. When I run intel burn test all cores are at 4.2 with 1.3 voltage, temp not exceeding 75C, everything automatically by mobo. So mobo pushes cores as high as its internal algorithms allow it, but it tends to apply massive overvoltage to eliminate instability and crashes. I'm kinda ok with it, coz anyway I'm going to swap 3800x for something like 4950x when (if) it arrives for AM4.

http://www.3dmark.com/fs/21788794
Ryzen 3800x, Radeon 7 ekwb custom water loop (EK-XRES 140 Revo D5, EK-CoolStream XE 360).
(prev. [email protected], Radeon 7)
Oversemper is online now  
Sponsored Links
Advertisement
 
post #752 of 757 (permalink) Old 01-16-2020, 08:33 AM
New to Overclock.net
 
Giustaf's Avatar
 
Join Date: Nov 2013
Posts: 28
Rep: 2 (Unique: 2)
hello!

is there any user who overclocks his 3900x to 4.400Mhz all core with asus x570 (possibly crosshair viii)?

I have overclocked my ram but I don't know how to do it with CPU!

can you help me please?

My pc: AMD 3900X - X570 Crosshair VIII Hero - F4-3600C16D-16GTZN - WB EK Velocity - EVGA 1080TI SC2
Giustaf is offline  
post #753 of 757 (permalink) Old 01-18-2020, 09:07 AM
New to Overclock.net
 
MishelLngelo's Avatar
 
Join Date: May 2013
Location: Belgrade, Serbia
Posts: 2,018
Rep: 47 (Unique: 34)
Quote: Originally Posted by SrKag View Post
Why is my new 3700x down clocking to 3450 and 3480 in idle? I have not read that it would go below 3600. My idle temp is between 28 & 30 c
Depends on power settings, I can have mine under 2000 and less than 1V when CPU is under 1% usage.

Asus Prime x470 Pro BIOS 5406 1004b
R7 3700x. CM Nepton 140XL
2 x Kingston HyperX KHX3600C17D4/8GX
Samsung 960 Evo 250GB
Asus strix 570 OC 4gb
MishelLngelo is offline  
Sponsored Links
Advertisement
 
post #754 of 757 (permalink) Old 02-13-2020, 02:09 AM
New to Overclock.net
 
Oversemper's Avatar
 
Join Date: Feb 2019
Posts: 32
Rep: 1 (Unique: 1)
Quote: Originally Posted by Pedros View Post
question ... is it normal the 3900x idles at 39-50ºC ?

Is there anything we can do to get these temps lower ( no manual overclock for now ) ?

Thank you!
Quote: Originally Posted by Oversemper View Post
Just assembled 3800x+asus x570-f. EKWB custom water. Idles at the same temps, this is because auto voltage can hit 1.5v. So these 39-50C is internal transient temperature which can be lowed only by undervolting. Mine hits 4525 Mhz on 6 cores (not simultaneously, just statistic during the use), the remaining two "bad" cores hit 4450. These frequencies are the combination of good cooling with unrestricted autovoltage. Also I have PBO activated and set to +200Mhz mode. When I run intel burn test all cores are at 4.2 with 1.3 voltage, temp not exceeding 75C, everything automatically by mobo. So mobo pushes cores as high as its internal algorithms allow it, but it tends to apply massive overvoltage to eliminate instability and crashes. I'm kinda ok with it, coz anyway I'm going to swap 3800x for something like 4950x when (if) it arrives for AM4.
Suddenly I've managed to considerably lower idle temps when I was tinkering with ram overclock applying different dram calculator values in bios. It was like this. My 3800x on auto soc voltage successfully booted on Infinity Fabric 1866Mhz, ram is 3733Mhz. Infinity Fabric 1900Mhz unbootable for me whatever the soc voltage. Soc auto-voltage for IF 1866 & ram 3733 is 1.1v. I lowered it to 1.05 and it's stable in every torture test. CPU temps (idle and torture test) were not affected by the soc voltage at all.

Then I decided to apply VDDG CCD, VDDG IOD and VDDP voltages from the DRAM calculator. First I used the "Min." values from the calculator which are 0.950, 0950 and 0.700 ("700" in bios), respectively. It did not boot. The auto values for VDDG CCD, VDDG IOD and VDDP for me are unknown because they are not shown in the bios and I do not use ryzen master (the lesser there programs/services in windows the better). The "Rec." values from the calculator for me were 1.025, 1.025 and 0.900. But I tried 1.000, 1.000 and 0.900. It booted alright and I started HM monitor and did not believe my eyes. CPU temp now idles down to 33! It almost never touched anything below 40 prior to that. Maximum temperature in intel burn test using 90% of ram did not change, it is 71-72 for me. Cinebench score also did not change. So, I guess, ASUS x570-f on bios 1405 (latest) sets too high VDDG CCD, VDDG IOD and VDDP, which keeps idle CPU temp elevated. It should be taken into account.

http://www.3dmark.com/fs/21788794
Ryzen 3800x, Radeon 7 ekwb custom water loop (EK-XRES 140 Revo D5, EK-CoolStream XE 360).
(prev. [email protected], Radeon 7)

Last edited by Oversemper; 02-13-2020 at 03:42 AM.
Oversemper is online now  
post #755 of 757 (permalink) Old 02-13-2020, 03:47 AM
New to Overclock.net
 
Join Date: Sep 2019
Location: Germany
Posts: 26
Rep: 2 (Unique: 1)
Thanks Oversemper, i can reproduce exactly the same behaviour with my C8H Board (with 3900X, RAM 3733CL16, FCLK 1866). My VDDG voltages were set to 1.075 before. Now i reduced both to 1.000 and my idle CPU temp went down from 41 to 34. Minimum CPU voltage (set to Auto as before) also went down to 0.931v. Very nice finding!

Last edited by Sam64; 02-13-2020 at 03:55 AM.
Sam64 is online now  
post #756 of 757 (permalink) Old 02-15-2020, 11:26 PM
New to Overclock.net
 
Join Date: Sep 2019
Posts: 10
Rep: 0
Welp, my 3900x died. Had been running solid for four months, and it bluescreened today and wouldn't get back into windows. A few hours of troubleshooting later, and it's running as long as I only enable the first two cores on CCD0. Going to any more than that on CCD0 means I reboot loop/bluescreen.

CDD1 cores seem ok, but I can only run them pairwise so I'm limited to four cores until I RMA this thing.

First CPU failure I've had in basically forever as far as I can remember.
Chito is offline  
post #757 of 757 (permalink) Old 02-16-2020, 09:59 PM
New to Overclock.net
 
Kaltenbrunner's Avatar
 
Join Date: Dec 2011
Posts: 2,396
Rep: 17 (Unique: 16)
Maybe for fun I'll get a Ryzen 7 3700X and mid-level modo, and try it for a month, and then either sell my i5-9600k or re-sell the ryzen


Last edited by Kaltenbrunner; 02-16-2020 at 11:18 PM.
Kaltenbrunner is offline  
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Overclock.net - An Overclocking Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in



Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off