Ryzen 1700 confusing overclocking

Kallakix2015

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May 18, 2015
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Hi,

So in another thread I was saying how I was trying to find the max overclock I could manage on a ryzen 1700. By setting the voltage to 1.35 was able to get to 4.2, everytime I upped the speed I did a stress test and everything seemed fine.

The issue is when I then did a cpu benchmark I found the score has massively dropped. At 3.6 (stock voltage 1.25) I got a cpu score of 1558 on cinebench. At 4.2 I got a score of 500. Thinking I overclocked too much I started going down from 4.2 and everytime I got a score of around 500. I then got all the way down to 3.6 and still got a low score.

I found that if I then changed the voltage back to stock at 1.25 and ran the benchmark at 3.6 I got a score of around 1558 again.

I can set the cpu all the way up to 4.2 and stress test it but the cpu wont score properly. If I go anything above the stock voltage it does this. This really confuses me because this cpu is supposed to manage 3.7 without overclocking at default voltages, but if I overclock to 3.7 with default voltages the PC will cut out.

So I can OC to 4.2 and get through a stress test fine but lose performance and I can't keep the performance at any frequency if the voltage is anything above the default 1.25.

The temps are fine (under 40 degrees C) and when I was at 1.35 the PC said the voltages were at 1.34 max when stress testing.

 
Solution
well, to get a good stable OC i stress for 24hs. Then you'll know it's stable. Others will suggest it's just fine for 2 hours. But i'd rather be sure. You have two extra cores, so given I get 3.9 on 1.35 your about right (knowing all chips are slightly different).3.8 isn't bad considering. At least you have a more realistic idea of where you're at. You can go from there.

Just from the point of view of starting off. I took a pragmatic approach. I started at 1.325 with stock (my VID is higher than that @1.375), ran it for 24hrs, no issues. Got 3.75 @1.325 stable again for 24hrs. Now I'm at 3.9 with 1.35 stable. I'm not gonna push it any more. I've a wraith max cooler and it suffices, but I like my temps below 80c , and am at 77ish with...
cinebench is not stress testing. it's benchmarking.

use prime95 or AIDA to stress your CPU. Your temps at 40c are too low for stress testing. Meaning your not stressing it. Unless your running some kind of super duper water loop, you will not get anywhere near those lose temps while true stress testing.

 

Kallakix2015

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I've been stress testing with prime95 and benchmarking with cinebench. The CPU hits 45c on blend test. Using a h100i v2 corsair cooler. If I up the voltage at all the benchmark plummets. Get the same low score if its at 3.6 or 4.2 or anything inbetween. I know the cpu temps have been really really cold, maximum i've seen is 45.
 
aha, there is your problem. You need to run it on small ffts. This will test only your CPU and cache. Report back with temps. I'd be very surprised if it passes Prime 95 at 4.1/4.2. But watch those temps. They will be much higher.

Thats the idea. Stress with full load and temps. Then you have your top end to work back from and get a stable OC.
 
the h100 will defo keep temps low, but not at 45 full load Prime w/small ffts.

You could try looking at LLC, load line calibration. It works for higher OC, but you need to read about it's use, and be careful. It will eliminate vdroop and may make your OC more stable. If you choose too high a setting it can overvolt. So be careful.
 

Kallakix2015

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Ok so I ran prime 95 on small ffts at 3.6 stock voltages. The CPU temp peaked at 45c. I then raised the cpu from 3.6 to 4.1 with 1.35 voltage and did the same test. The max temp again was 45. But If I benchmark at 3.6 stock voltages I get 1558, If I benchmark at 4.1 with 1.35 voltage I get 500.

As soon as I raise the voltages from the default amount its like the cpu locks its performance and wont go any higher. But when logged in it says I'm at 4.1. Surely running prime95 at 4.1 instead of 3.6 would raise the temperature. The voltage went up to 1.344 max when benchmarking at 4.1ghz.

Found LLC in the BIOS and it was set to Auto, there were options for low,medium,high,extreme.
 
yes it would most certainly raise the temps. Could be a bug, but Ive not experienced any myself. With an increase in voltage there is an increase in heat. It physics. So I'm scratching my head at what you've outlined.
One thing it could be is, the windows power profile. I'm sure your aware of it. You need to select high performance, or use the Ryzen windows profile to ensure your CPU runs at full pelt.

Check that out and let me know. I'm intrigued as to what the solution is.
 


for a 4.1 OC they suggest you use, medium or high, and never extreme. Maybe start with medium. As mentioned it eliminates Vdroop and allows the voltage you select to roughly remain the same when your at full load or idle. It takes a little tweaking. I haven't done it myself, as i'm researching it a little more so i can be sure what effect it will have.
Extreme is a no-no though. It can seriously overvolt the CPU.
 

Kallakix2015

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The solution was simple, but not thought of. The day I finished building this PC I updated the BIOS, or I thought I updated it. I went to the site 10 minutes ago and see I'm about 4 versions behind. That forum that said the 1.55ghz thing was a bug were right and it was all solved by updating to the latest version. Now I just have the task of finding the best frequency I can reach. Just ran prime95 small fft at 3.8 and had temps high 60s. The solution was completely ignored because I was positive I updated it when I first built the PC but apparently not.

The h100i v2 is very good if you're looking to upgrade. Used it on an i7 3770k before this and it never went above mid 70s.

Thanks for the help :-D


Motherboard:
GA-AX370-Gaming K7
Version that prevented overclocking : F4
Version that fixed issue: F7a
 


Ah, thats fecking great!! :) Damn it. I was gonna suggest next that you had updated to the latest bios!! :) On my Asus B350 Prime, there were huge problems between 0605 and 0805 updates. One contained the aGESA 1.006 update thingy, and instantly made my Ryzen better.

It also corrects a temp issue on the CPU.

Okay, so it all makes much more sense now. So I expect your temps to be about 10c below mine. I've a decent cooler but it's air.

My idle temps are 27-33 (ambient dependant), game temps about 45-60, and Prime stressing about 72c.
Thats @ 3.9 on 1.325 vcore.

The LLC is an interesting one. It can really stabilise a higher OC, but as mentioned it can over volt. Most Ryzen get to about 3.9 on air and max of 4.1 on water. It's just the architecture. It can't do any more. So if you push beyond 4ghz use the LLC on med or high, watch that Vdroop, and temps as well. THe advice is to not let temps go above 80c at full stress. You can push it higher, but you don't want it 24hr. So once the temps get to 80c thats your max.
 

Vellinious

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Dec 3, 2013
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Glad you got it figured out. I wouldn't count on anywhere near 4.2 stable, for a daily clock, btw. 4.0, MAYBE 4.1 if your cooler can handle it, which is doubtful....10 or 15 minutes, maybe. AIOs just aren't any good for any kind of sustained heat output.
 

Kallakix2015

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I've been basing everything off the voltages people are suggesting on other forums. Some were saying it should be kept between 1.35-1.45 depending on your cooler. I was wanting to keep it under 1.40. Tried 4.0 at 1.39 and it could no way near handle it and cut out within seconds of stress testing, so that's out the window. 3.9 seemed abit unstable as well so I'm at 3.8 at 1.375, it seemed ok at 1.35 but I thought upping the voltage a little more might be more stable? I'm still new to overclocking not that familiar with how it all works.
 
well, to get a good stable OC i stress for 24hs. Then you'll know it's stable. Others will suggest it's just fine for 2 hours. But i'd rather be sure. You have two extra cores, so given I get 3.9 on 1.35 your about right (knowing all chips are slightly different).3.8 isn't bad considering. At least you have a more realistic idea of where you're at. You can go from there.

Just from the point of view of starting off. I took a pragmatic approach. I started at 1.325 with stock (my VID is higher than that @1.375), ran it for 24hrs, no issues. Got 3.75 @1.325 stable again for 24hrs. Now I'm at 3.9 with 1.35 stable. I'm not gonna push it any more. I've a wraith max cooler and it suffices, but I like my temps below 80c , and am at 77ish with 3.9. 72c with 3.75.
 
Solution

Vellinious

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Dec 3, 2013
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There's absolutely no reason to stress test for 24 hours....none. Stress test with Realbench for 2 hours to do light load testing. And if you really wanna put it through the ringer, hit up AIDA64 or OCCT for 2 hours. With Ryzen, I'd also highly suggest using MemTest64 and test to 300% coverage on the RAM. Memory on this platform is twitchy as hell.