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post #21 of 36 (permalink) Old 06-26-2020, 04:49 AM
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Quote: Originally Posted by davidelite10 View Post
Good info, my 3900x arrives today I'm excited to see what I can push on it.
Didn't have much time last night to mess with it but I got to 4.3ghz on 1.25v stable, however ram isn't running at it's proper speed need to mess with that later.
Got around 7405/7415 on Cine R20 with the ram at 2133mhz. Hoping getting the ram to 3200mhz and FCLK to 1800mhz to pump it up to where it should be hopefully around 7600.

4.4 at 1.35v all core wouldn't work, might try it at 1.4v but don't want to run it too high on voltage. Also this chip is INCREDIBLY cool even at 1.25v full load. Never touching above 60C in gaming so far in VR.

Going from a i7 4770k to a R9 3900x removed my bottlenecks in VR which is great, haven't tested other games like Arma or DCS yet.

Last edited by davidelite10; 06-26-2020 at 04:55 AM.
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post #22 of 36 (permalink) Old 06-26-2020, 06:58 AM
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Quote: Originally Posted by davidelite10 View Post
Didn't have much time last night to mess with it but I got to 4.3ghz on 1.25v stable, however ram isn't running at it's proper speed need to mess with that later.
Got around 7405/7415 on Cine R20 with the ram at 2133mhz. Hoping getting the ram to 3200mhz and FCLK to 1800mhz to pump it up to where it should be hopefully around 7600.

4.4 at 1.35v all core wouldn't work, might try it at 1.4v but don't want to run it too high on voltage. Also this chip is INCREDIBLY cool even at 1.25v full load. Never touching above 60C in gaming so far in VR.

Going from a i7 4770k to a R9 3900x removed my bottlenecks in VR which is great, haven't tested other games like Arma or DCS yet.
are you running 4.3 on all cores? at 1.25?

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post #23 of 36 (permalink) Old 06-26-2020, 07:07 AM
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Quote: Originally Posted by hypespazm View Post
are you running 4.3 on all cores? at 1.25?

Yup! Got lucky there, just doesn't want to push 4.4 yet, going to mess with it.

1.25v stable in 99% loads, fails in Small fft in prime95 after 10 minutes, but after bumping to 1.3v it stuck for 20 no issue.
Realistically 1.25v or 1.275v is where I can keep it with no issues in gaming(3 hours vr no problem last night, and rendering in blender, and unity).

EDIT: I was able to 4.4 on some cores with per CCX clocking on 1.3v but want all across the board.
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post #24 of 36 (permalink) Old 06-26-2020, 07:37 AM
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Quote: Originally Posted by davidelite10 View Post
Yup! Got lucky there, just doesn't want to push 4.4 yet, going to mess with it.

1.25v stable in 99% loads, fails in Small fft in prime95 after 10 minutes, but after bumping to 1.3v it stuck for 20 no issue.
Realistically 1.25v or 1.275v is where I can keep it with no issues in gaming(3 hours vr no problem last night, and rendering in blender, and unity).

EDIT: I was able to 4.4 on some cores with per CCX clocking on 1.3v but want all across the board.
my 3900x will do 4.3 all core on 1.23-1.26 prime95 1hr stable didnt really push that much longer, I can do 44 on first chiplet and 43 on 2nd with 1.26-1.30 i only pushed that for 15mins on prime then used other stuff to test it stable.


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post #25 of 36 (permalink) Old 06-26-2020, 09:00 AM
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Quote: Originally Posted by Bal3Wolf View Post
my 3900x will do 4.3 all core on 1.23-1.26 prime95 1hr stable didnt really push that much longer, I can do 44 on first chiplet and 43 on 2nd with 1.26-1.30 i only pushed that for 15mins on prime then used other stuff to test it stable.
That's a good chip mang! Going to try going for 4.4 at 1.325v to see if it sticks after I get the mem to where it should be.
Hopefully doesn't mess with my stability.
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post #26 of 36 (permalink) Old 06-26-2020, 09:11 AM
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Quote: Originally Posted by davidelite10 View Post
That's a good chip mang! Going to try going for 4.4 at 1.325v to see if it sticks after I get the mem to where it should be.
Hopefully doesn't mess with my stability.

Yea i just got my memory tuned the other day 3200mhz clocked at 3533 crappy samsung c die memory.


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post #27 of 36 (permalink) Old 06-26-2020, 09:22 AM
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Quote: Originally Posted by Bal3Wolf View Post
Yea i just got my memory tuned the other day 3200mhz clocked at 3533 crappy samsung c die memory.

What fclk are you set at? Did you get any noticeable gains from it?
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post #28 of 36 (permalink) Old 06-26-2020, 09:27 AM
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Quote: Originally Posted by davidelite10 View Post
What fclk are you set at? Did you get any noticeable gains from it?
setting on auto that is set to 1766 which is running 1:1 with memory i tried setting it to 1800 with memory still at 3533 and my latency went up to 85 so i put it back to auto that gets me 70-70.5.


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post #29 of 36 (permalink) Old 06-26-2020, 09:32 AM
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Quote: Originally Posted by Bal3Wolf View Post
setting on auto that is set to 1766 which is running 1:1 with memory i tried setting it to 1800 with memory still at 3533 and my latency went up to 85 so i put it back to auto that gets me 70-70.5.
Cool thanks brother, will post some screens on cine and updates when I get home.
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post #30 of 36 (permalink) Old 06-29-2020, 05:25 PM
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Just throwing my hat in the ring on this one, but I've changed cooling solution since this; was H110i AIO before, but now a 3 x 360mm rad custom loop, so I need to test again at some point.

My 3900x is about 6 weeks old now and does 4.3GHz @ 1.181v (1.275v set in BIOS, auto LLC brings it down to 1.181v during P95 Small FFT) which was the FIT voltage with the H110i; not really had time to play since I got the custom loop set up, so I suspect the FIT voltage will go up slightly due to lower temps.

Also does 1800 FCLK with vSOC at 1v, not tried higher yet. This again has auto LLC, 1.025v set in BIOS, droops to 1.006v "idle" and 1.0v during heavy RAM loads like TM5.

Currently running stock with CB20 score 7302 - I use the PC for work, so not much chance to play with it recently.

Will update as I do
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