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post #11 of 45 (permalink) Old 10-27-2019, 01:57 AM
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Figured it out, this new way of OC is hard on us old heads used to 20+ years of the traditional way.
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post #12 of 45 (permalink) Old 10-27-2019, 03:11 AM
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Quote: Originally Posted by VPII View Post
... I do believe negative voltage offset works great if you've manually overclocked your cpu and know what it is capable of at a certain vcore. In all honesty I can drop the vcore a little more with offset but I thought it is fine to begin with. Now to explain the results, with the vcore on auto I got a 100.4 x 41.74 dropping to 41.25 mostly during the run. With the 0.1250 vcore offset the processor was running 100.4 x 42 dropping just briefly to 41.5 but mostly running 41.75 multiplier.

^ VPII illustrates the point fairly well.

@ stock (Auto) voltage his max Vcore is 1.475V, max temp is 76C, and score is 7254.

@ -.125 offset max Vcore is 1.37V, max temp is 67C, and score is 7311.


Mileage will vary depending on mobo and silicon lottery, but trading lower CPU temps and less power consumption for increased performance ain't a bad deal in my book.

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post #13 of 45 (permalink) Old 10-27-2019, 04:00 AM
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Quote: Originally Posted by TELVM View Post
^ VPII illustrates the point fairly well.

@ stock (Auto) voltage his max Vcore is 1.475V, max temp is 76C, and score is 7254.

@ -.125 offset max Vcore is 1.37V, max temp is 67C, and score is 7311.


Mileage will vary depending on mobo and silicon lottery, but trading lower CPU temps and less power consumption for increased performance ain't a bad deal in my book.
It was exactly what I was trying to see whether performance loss is in fact an issue with reduced vcore when running stock or PBO. I was pleasantly surprised to see the cpu go multi core that high with only running PBO. Single thread was lower than 4.6ghz but still okay.... I'm not really a fan of single thread. I tried -0.150 vcore off-set but it did not work, failed during run. I'll try a fraction lower, like -0.1375 to see if it would stand and post results.

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post #14 of 45 (permalink) Old 10-27-2019, 04:11 AM
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Quote: Originally Posted by TELVM View Post
^ VPII illustrates the point fairly well.

@ stock (Auto) voltage his max Vcore is 1.475V, max temp is 76C, and score is 7254.

@ -.125 offset max Vcore is 1.37V, max temp is 67C, and score is 7311.


Mileage will vary depending on mobo and silicon lottery, but trading lower CPU temps and less power consumption for increased performance ain't a bad deal in my book.
Slight drop in temps a small bump in performance.....
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post #15 of 45 (permalink) Old 10-27-2019, 12:30 PM
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Strange it passed prime 95 for an hr and several cinnebench 20 runs, but crashed last night when idle while I was asleep?

Gigabyte board PBO on max Blk 103 vcore minus 100mv
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post #16 of 45 (permalink) Old 10-29-2019, 03:36 PM - Thread Starter
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Problem is that with even a slight undervolt, single core score drops.

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post #17 of 45 (permalink) Old 10-29-2019, 04:02 PM
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Quote: Originally Posted by Synoxia View Post
Problem is that with even a slight undervolt, single core score drops.
Mine doesn’t.
I get higher single core boost then multi core cause of heat.

Multi core i get between 4200mhz and about 4480mhz depending on how stressful the stress test is and temps, but single core I don’t have that issue,
But my undervolt with PBO ends up 1.35v - 1.4v
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post #18 of 45 (permalink) Old 10-29-2019, 05:49 PM - Thread Starter
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Quote: Originally Posted by Hokies83 View Post
Mine doesn’t.
I get higher single core boost then multi core cause of heat.

Multi core i get between 4200mhz and about 4480mhz depending on how stressful the stress test is and temps, but single core I don’t have that issue,
But my undervolt with PBO ends up 1.35v - 1.4v
BCLK is a different monster. Personally i just gave up on it as it wasn't giving me much on 1% lows in games and i wasnt 100% sure of the stability.

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post #19 of 45 (permalink) Old 10-30-2019, 01:56 AM
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Quote: Originally Posted by Synoxia View Post
Problem is that with even a slight undervolt, single core score drops.
That's not the case on my 2600X, both single & multi core performances are consistently better @ -.1 Vcore offset.

Mileage may vary however, depending on silicon lottery, motherboard and cooling solution.

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post #20 of 45 (permalink) Old 10-30-2019, 11:59 AM
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Quote: Originally Posted by TELVM View Post
That's not the case on my 2600X, both single & multi core performances are consistently better @ -.1 Vcore offset.

Mileage may vary however, depending on silicon lottery, motherboard and cooling solution.
They made some changes on the Ryzen 3000 and single core performance will drop with -0.1v offset. see video.

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