OFFICIAL 3950x Overclocking thread.... - Page 27 - Overclock.net - An Overclocking Community
Forum Jump: 

OFFICIAL 3950x Overclocking thread....

Reply
 
Thread Tools
post #261 of 502 (permalink) Old 01-14-2020, 09:07 AM
New to Overclock.net
 
VPII's Avatar
 
Join Date: Dec 2014
Location: Hout Bay, Cape Town, South Africa
Posts: 826
Rep: 15 (Unique: 10)
Quote: Originally Posted by newls1 View Post
vrm temp of 50c is still WAY UNDER temp for anything close to over heating. vrm's can run 110c+ as they are designed for that... if you are having the "insta-reboot" like alot of us have, we/you are going over current on something.....
I'll have a look at the current limits, just funny that it worked in cooler weather but hot weather no go.

AMD Ryzen 9 3950X
MSI Meg X570 Ace Bios V170
G-Skill DDR4 3200 CL14 @ DDR4 3800 CL16
Palit Geforce RTX 2080 Ti
VPII is offline  
Sponsored Links
Advertisement
 
post #262 of 502 (permalink) Old 01-14-2020, 10:16 AM
New to Overclock.net
 
VPII's Avatar
 
Join Date: Dec 2014
Location: Hout Bay, Cape Town, South Africa
Posts: 826
Rep: 15 (Unique: 10)
Okay, still 30+C ambient this side but I got it to pass. Increased the EDC and TDC a tad which seems to have done the trick although it is way below what I've set. I actually did a Blender run at 4.3ghz but when I saw one CCD reaching 90C I stopped it as I do not feel comfortable with the chip running that hot even though it was only with 1.2625vcore. But so yes, my cpu is stable 4.2ghz at 1.1875vcore.
Attached Thumbnails
Click image for larger version

Name:	Blender Result - 4.2ghz.jpg
Views:	24
Size:	949.0 KB
ID:	318840  


AMD Ryzen 9 3950X
MSI Meg X570 Ace Bios V170
G-Skill DDR4 3200 CL14 @ DDR4 3800 CL16
Palit Geforce RTX 2080 Ti
VPII is offline  
post #263 of 502 (permalink) Old 01-14-2020, 10:32 AM
New to Overclock.net
 
Join Date: Dec 2013
Location: FIN
Posts: 253
Rep: 8 (Unique: 6)
@VPII

You have almost equally same specs dies. My first die is 20% more power hungry with 150-175 MHz higher clocks than second die but second die can't handle high clocks so I think this is still good one.

Miiksu is offline  
Sponsored Links
Advertisement
 
post #264 of 502 (permalink) Old 01-14-2020, 12:56 PM
New to Overclock.net
 
djustiz's Avatar
 
Join Date: Aug 2019
Posts: 22
Rep: 0
A bit late to the party it seems :-)

Interesting thread. Good read :-D

Just wanted to participate.

After a lot of fiddling, trial and error with things like 1usmus powerplan, undervolting, overvolting, PBO and per ccx tuning, I've settled for a rather conservative per ccx of 43/43/42/42 at 1.2V thats droops to 1.181V in cb20, and 1.175V in more extreme scenarios (Based on my chips FIT). This puts me just above a 10K score in Cinebench r20. It runs nice, cool and quiet. Around 30c idle, and 78c under torture loads with a single push/pull 240 AIO and very quiet fan settings, and is a very nice bump in performance over my 9000-ish cb20 scores stock.

djustiz is offline  
post #265 of 502 (permalink) Old 01-14-2020, 05:40 PM
New to Overclock.net
 
VPII's Avatar
 
Join Date: Dec 2014
Location: Hout Bay, Cape Town, South Africa
Posts: 826
Rep: 15 (Unique: 10)
Okay, I did 2 more runs this morning first one at same cpu speed and vcore and the second with a 0.2 bump on the BCLK basically taking clocks to 4208mhz. Not a lot of difference in time, about 3 to 4 seconds but glad it worked.
Attached Thumbnails
Click image for larger version

Name:	Blender Result - 4.2ghz - 2.jpg
Views:	14
Size:	938.8 KB
ID:	318936  

Click image for larger version

Name:	Blender Result - 4.2ghz - 3.jpg
Views:	14
Size:	946.1 KB
ID:	318938  


AMD Ryzen 9 3950X
MSI Meg X570 Ace Bios V170
G-Skill DDR4 3200 CL14 @ DDR4 3800 CL16
Palit Geforce RTX 2080 Ti
VPII is offline  
post #266 of 502 (permalink) Old 01-14-2020, 06:59 PM
New to Overclock.net
 
nirurin's Avatar
 
Join Date: May 2017
Posts: 40
Rep: 1 (Unique: 1)
Quote: Originally Posted by djustiz View Post
A bit late to the party it seems :-)

Interesting thread. Good read :-D

Just wanted to participate.

After a lot of fiddling, trial and error with things like 1usmus powerplan, undervolting, overvolting, PBO and per ccx tuning, I've settled for a rather conservative per ccx of 43/43/42/42 at 1.2V thats droops to 1.181V in cb20, and 1.175V in more extreme scenarios (Based on my chips FIT). This puts me just above a 10K score in Cinebench r20. It runs nice, cool and quiet. Around 30c idle, and 78c under torture loads with a single push/pull 240 AIO and very quiet fan settings, and is a very nice bump in performance over my 9000-ish cb20 scores stock.


Just be aware that I also had a very similar overclock for a while, at those kinds of voltages. It's deceptively stable. As in - it's not stable.

It'll push through cinebench and things, but chuck on a y-cruncher or prime95 load and it'll crash out. Run an extended blender run and it'll do the same.

That is, unless you have a really, really good chip. Like, made from gold pressed latinum and blessed by the grand negus himself, kind of chip.

Only 50% of chips will hit 4.1ghz all core, at 1.187v (under load, that voltage is).

Only 20% of chips will hit 4.15ghz, at 1.2v.

Yours is 4.2ghz, so you can extrapolate that down to something like 5% of chips (at best, probably less), at 1.225v maybe. Probably more like 1.25v, as the required voltages increase significantly at those levels.

I'm currently running a series of proper stress tests on mine, and it's currently a choice between -

4300/4250/4100/4075 at 1.225v under load

or 4400/4300/4200/4225 at 1.25v under load.

And I suspect I have an above average chip. A lot of people seem to need 1.265v+ in order to get stable above 4.3mhz.

Unless, of course, your chip really is that good. Then you're very lucky!


Also - Your FIT seems very low. Far as I'm aware, it should be more like 1.25v. or so, maybe even closer to 1.3v. What cooler are you using? You can't find out your FIT limits if your chip is overwhelming your cooler (which is why I'm in the process of upgrading my cooler). Once temps start rising the chip will drop voltages and throttle itself by default.
nirurin is offline  
post #267 of 502 (permalink) Old 01-14-2020, 07:19 PM
New to Overclock.net
 
dansi's Avatar
 
Join Date: Mar 2009
Posts: 901
Rep: 32 (Unique: 22)
Also overclocked chips can crash doing the most mundane tasks like while you are browsing and video calling. That's the most heart breaking, after you past hours of various load tests.
dansi is offline  
post #268 of 502 (permalink) Old 01-14-2020, 11:39 PM
New to Overclock.net
 
Nizzen's Avatar
 
Join Date: Apr 2013
Location: Norway
Posts: 1,787
Rep: 62 (Unique: 51)
Is it possible to save CCX overclocking yet?
Nizzen is offline  
post #269 of 502 (permalink) Old 01-14-2020, 11:44 PM
New to Overclock.net
 
djustiz's Avatar
 
Join Date: Aug 2019
Posts: 22
Rep: 0
I might be quite lucky then :-)

Every step of the way I've tested with Cb20 and Y-cruncher. The 1.181 load voltage is cb20 load. Y-cruncher pushes voltage down to 1.175. Once I found my limit I also ran the entire Blender Open Data Benchmark suite without issue.

Perhaps my FIT measurement was scewed because the chip was overwhelming my cooler? -its only a 240mm AIO in push/pull configuration. With my current configuration the chip is idling around 33c and in normal high intensity workloads (like video rendering) it will hit 68c-ish temperatures. Blender Open Data benchmark pushes temps to 79c max, and Y cruncher to 85c.

I've run this configuration for days without any problems. And I've been doing a lot mixed work, from browsing, gaming and quite a lot of video rendering.
djustiz is offline  
post #270 of 502 (permalink) Old 01-14-2020, 11:47 PM
New to Overclock.net
 
djustiz's Avatar
 
Join Date: Aug 2019
Posts: 22
Rep: 0
Quote: Originally Posted by Nizzen View Post
Is it possible to save CCX overclocking yet?
What do you mean, save per ccx? ... What I do is, that I dial in an OC with ryzen master, and then type in the selected values in bios (Gigabyte Aorus Elite X570, F11 Bios). It sticks/saves if thats what you mean :-)
djustiz 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: 4 (0 members and 4 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