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post #11841 of 12029 (permalink) Old 07-06-2020, 06:58 AM
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Quote: Originally Posted by nick name View Post
I run 1900 FCLK daily, but can't POST with LN2 enabled.
I've found that I'm able to reduce my VDDG down to .950 for 1st time in ages. Haven't tried this low for some time. Might have to try 1900 again

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post #11842 of 12029 (permalink) Old 07-06-2020, 07:01 AM
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Quote: Originally Posted by crakej View Post
I've found that I'm able to reduce my VDDG down to .950 for 1st time in ages. Haven't tried this low for some time. Might have to try 1900 again
Ayyyy. Fingers crossed.

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post #11843 of 12029 (permalink) Old 07-06-2020, 08:14 AM
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Quote: Originally Posted by garf333 View Post
What's the best way to find the 'safe' voltage for high load on Ryzen? It's frequently called the "FIT" voltage if Im not mistaken?

Is it still run PBO and Prime95 and check HWInfo?

Sorry, I'm not really in the loop WRT to this.
Voltages are not the most destructive element with regards to the CPU. The amount of damage done by electromigration is minimal. The majority of damage done by over-volting is the result of the heat generated. LN2 cooling is indicative of just this.

Therefore when setting up your CPU, temps become the most critical indicator. With Ryzen I find 80c is the most that you should be accepting under full load. That will leave you some tolerance to spare.

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post #11844 of 12029 (permalink) Old 07-06-2020, 08:32 AM
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I'm using bios 2304 from May 2019 with a 2600X. All at stock for the moment. Is there a better bios to use?
Thanks
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post #11845 of 12029 (permalink) Old 07-06-2020, 11:54 AM
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Quote: Originally Posted by Geezerman View Post
I'm using bios 2304 from May 2019 with a 2600X. All at stock for the moment. Is there a better bios to use?
Thanks
If I remember correctly I was very happy with 3001 performance on my 2700X.

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post #11846 of 12029 (permalink) Old 07-06-2020, 11:56 AM
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I've been looking at some of the XT Geekbench scores and it appears there are a few runs that were done with all-core overclocks. I saw several (on 3600XT, 3800XT, 3900XT) at 4.5GHz and one at 4.525GHz. That seems promising -- especially on the 3900XT.

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post #11847 of 12029 (permalink) Old 07-06-2020, 12:53 PM
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Quote: Originally Posted by nick name View Post
I've been looking at some of the XT Geekbench scores and it appears there are a few runs that were done with all-core overclocks. I saw several (on 3600XT, 3800XT, 3900XT) at 4.5GHz and one at 4.525GHz. That seems promising -- especially on the 3900XT.
Agree on the 3900xt being a positive indicator for dual good CCDs. Just with GB could show max temp and voltage info, but, we'll know soon.

In the end, while AMD LN2 option did allow higher fclk use, it was not 100% stable at anything over 1882ish fclk.

So fclk is my hard bottleneck 😞. First time I've ever had a bus limit an overclock before temp/voltage/speed did so.
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post #11848 of 12029 (permalink) Old 07-07-2020, 02:19 AM
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I noticed a couple of you are using a different Timing Checker than I've been using (black background)

Anyone got a link for that?

Current Bios - 3103

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post #11849 of 12029 (permalink) Old 07-07-2020, 07:11 AM
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Quote: Originally Posted by crakej View Post
I noticed a couple of you are using a different Timing Checker than I've been using (black background)

Anyone got a link for that?
This one, Zen Timings ?

https://github.com/irusanov/ZenTimings/releases

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post #11850 of 12029 (permalink) Old 07-07-2020, 07:48 AM
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Quote: Originally Posted by tcclaviger View Post
Agree on the 3900xt being a positive indicator for dual good CCDs. Just with GB could show max temp and voltage info, but, we'll know soon.

In the end, while AMD LN2 option did allow higher fclk use, it was not 100% stable at anything over 1882ish fclk.

So fclk is my hard bottleneck 😞. First time I've ever had a bus limit an overclock before temp/voltage/speed did so.
I think I'm more excited about the 4700G though. As something to play with -- it seems very promising.

I can't even POST with LN2 mode.

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