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post #21 of 679 (permalink) Old 07-08-2019, 03:19 AM
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Currently I have a pre-order for R7 3700X, after reading OP, I'm thinking of getting a R5 3600. Especially as all I do is tinker with the setup than really use it. OP would suggest to be the non X R5 3600 has full PBO support or am I reading between the lines, anyone able to share info on this? or do I just order a R5 3600 which can be here tomorrow and try it .
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post #22 of 679 (permalink) Old 07-08-2019, 03:55 AM
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Quote: Originally Posted by rdr09 View Post
I'm not understanding this. Isn't that is what we are trying to avoid by staying at or up to 3733MHz or just use 3600MHz and lower?
Even in the x470 motherboards you'll get added options in the bios when dropping a Ryzen 3000 in with which you can set the IF speed hence higher memory clocks being possible. But the higher memory clocks won't help much if your IF is at 1000mhz.

My friend had the IF speed at 1900mhz on an Asrock x570 board. He struggled with both the Asus and GB board he has due to bios not really working as it should.

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post #23 of 679 (permalink) Old 07-08-2019, 03:58 AM
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Quote:
the safe voltage levels for the silicon are around 1.325V in high-current loads
and up to 1.47V in low-current loads
Really, take that advise for granted whenever your going to put in a manual OC. I've seen people degrade their 2x00 series chips to bits and even review websites sending out the wrong signal for putting 1.4 / 1.45v vcore. It will degrade your chip faster then you think.

Just as (my) 2700x; undervolting and good cooling is what gets the best out of XFR/PBO (4.1Ghz All core and 4.35Ghz single).
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post #24 of 679 (permalink) Old 07-08-2019, 04:23 AM
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Quote: Originally Posted by gupsterg View Post
Currently I have a pre-order for R7 3700X, after reading OP, I'm thinking of getting a R5 3600. Especially as all I do is tinker with the setup than really use it. OP would suggest to be the non X R5 3600 has full PBO support or am I reading between the lines, anyone able to share info on this? or do I just order a R5 3600 which can be here tomorrow and try it .
Yes, so we can read your findings soon! Then, sell it when the 16 core cores.

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post #25 of 679 (permalink) Old 07-08-2019, 04:25 AM
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Quote: Originally Posted by VPII View Post
Even in the x470 motherboards you'll get added options in the bios when dropping a Ryzen 3000 in with which you can set the IF speed hence higher memory clocks being possible. But the higher memory clocks won't help much if your IF is at 1000mhz.

My friend had the IF speed at 1900mhz on an Asrock x570 board. He struggled with both the Asus and GB board he has due to bios not really working as it should.

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Looks like Asrock is on the ball this time. Thanks VPII. +rep.

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post #26 of 679 (permalink) Old 07-08-2019, 04:36 AM
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For those interested Anandtech article has nice info on constraints for 3xxx.

Spoiler!


Quote: Originally Posted by gupsterg View Post
Currently I have a pre-order for R7 3700X, after reading OP, I'm thinking of getting a R5 3600. Especially as all I do is tinker with the setup than really use it. OP would suggest to be the non X R5 3600 has full PBO support or am I reading between the lines, anyone able to share info on this? or do I just order a R5 3600 which can be here tomorrow and try it .
Quote: Originally Posted by rdr09 View Post
Yes, so we can read your findings soon! Then, sell it when the 16 core cores.
Your pushing me over the edge man! , as forum member there it's FOC next day delivery...

Spoiler!


Quote: Originally Posted by Jism View Post
...

Just as (my) 2700x; undervolting and good cooling is what gets the best out of XFR/PBO (4.1Ghz All core and 4.35Ghz single).
Hopefully the 3xxx SMU doesn't track negative voltage offset just like 2xxx.
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post #27 of 679 (permalink) Old 07-08-2019, 09:32 AM
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Quote: Originally Posted by chakku View Post
Awesome writeup and interesting analysis on the overclocking.

Is there a chance we could see some CCD latency testing and compare how data hopping from a core on one chiplet to the other compares to a single chiplet processor? Ie how a theoretical 2CCX/2CCX + 2CCX/2CCX 8 core processor would fare against the 3700X's 4CCX/4CCX? (I know this is probably outside the scope of your analysis but it's worth a try since Matisse does change the layout entirely)
Check this out: https://3dnews.ru/990367/obzor-amd-ryzen-9-3900x
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post #28 of 679 (permalink) Old 07-08-2019, 09:47 AM
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@finalheaven

Nice find/share (+rep).

@rdr09

I told the wife it was you who made me do it ...

Spoiler!


Now to get ready to be further hen pecked when I tinker tomorrow ...

Last edited by gupsterg; 07-08-2019 at 11:04 AM.
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post #29 of 679 (permalink) Old 07-08-2019, 09:56 AM
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Quote: Originally Posted by finalheaven View Post

Seems Ryzen is at the mercy of the OS scheduler again. Maybe that is a selling point for 3950X over 3900X

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post #30 of 679 (permalink) Old 07-08-2019, 10:08 AM
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Quote: Originally Posted by AlphaC View Post
Seems Ryzen is at the mercy of the OS scheduler again. Maybe that is a selling point for 3950X over 3900X
That is what I'm thinking as well. Apps/Games that utilize one ccx can be much more quicker. 3 cores/6 threads can be a limiting factor for those optimizing for 4 cores/8 threads in one ccx.

3950X looks much more enticing now. Or settle for a 3700X/3800X. All this assuming that windows and/or developers get better with scheduling.
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