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x470 Taichi - P2.0 XFR/PBO

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Nemesis.ie View Drop Down
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    Posted: 26 Apr 2019 at 7:15pm
I mean -0.1V in the previous msg of course. Recovering from eye surgery and have very blurry vision!
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Nemesis.ie View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nemesis.ie Quote  Post ReplyReply Direct Link To This Post Posted: 15 Apr 2019 at 7:55pm
Mine seems stable at -1.0. As discussed, lowering the voltage lowers the temps and if there is still sufficient voltage for stability, results in higher boost clocks.

I'm using a Cryorig Universal but with only the middle fan as the outer one sounded scratchy.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote gizmic Quote  Post ReplyReply Direct Link To This Post Posted: 15 Apr 2019 at 6:46pm
oh i didn't know if it cant go beyond -0.1v but i think its a thermal thing than the voltage
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nemesis.ie Quote  Post ReplyReply Direct Link To This Post Posted: 15 Apr 2019 at 6:36pm
Absolutely.

Every chip/setup is different. It's good to have options though. :)
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Post Options Post Options   Thanks (0) Thanks(0)   Quote gizmic Quote  Post ReplyReply Direct Link To This Post Posted: 15 Apr 2019 at 6:33pm
its a lottery if you can go lower -0.1v my system isn't stable lower than -0.075v
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Nemesis.ie Quote  Post ReplyReply Direct Link To This Post Posted: 15 Apr 2019 at 3:09pm
It seems the negative offset is limite to -0.1V.

It would be great if this could be increased so we can try even lower.

Given the chips have been out for over a year and e.g. my new one is on stepping B2, the latest (good quality) ones may well be able to run at an even lower voltage.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote gizmic Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jan 2019 at 11:37pm
here's mine
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Post Options Post Options   Thanks (0) Thanks(0)   Quote J Z Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jan 2019 at 4:17pm
Kind Regards,
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https://shop.JZelectronic.de - Der Shop mit ausgesuchter ASRock Profi Hardware

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Post Options Post Options   Thanks (0) Thanks(0)   Quote Delta9k Quote  Post ReplyReply Direct Link To This Post Posted: 06 Jan 2019 at 3:25pm
Ended up with the following:

Left BCLK at 100
Enabled PBO
vcore offest -0.08750
Tune ram via Ryzen calculator, fast settings.
DRAM 3.365

All core under load 4175
PBO boosting to 4350
idle 2200

I may want to try dropping ram to 3.55v but for the sake of this thread I'm done.

X470 Taichi, 2700X, 16GB GSkill c14 @3200, 960Evo 500, 860Evo 1TB, GTX1080, RM850x, Celsius S36, Define R6 usb-c
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Delta9k Quote  Post ReplyReply Direct Link To This Post Posted: 01 Jan 2019 at 6:16pm
Originally posted by gizmic gizmic wrote:

i've been told to reduce the cpu vcore further to get more clocks

other than pstates and ram timings its pretty much it


Thanks - I did a little bit of tuning. I added an offset -0.08750 which interestingly enough raised my VID up bit but not dramatic but from 1.444 to 1.456V For grins I tried adding some bclk. I was only stable at 101 something in my system did not like 102 it would lock up after 5 mins or so in the OS. But 101 was stable for 90 minutes of prime95. I did notice that Core Temp was displaying some of my core freqs as 7447 MHz ... so that app at least was not liking it and I did not do any diskmark bench's to see if pcie i/o was stable with my nvme or sata's but I did get a decent cb score.

I ended up dropping the bclk back to 100 because I know I'm solid there. I did a couple cb passes there and Im hitting mid 1881-1886 consistently.. I'll keep playing with the offsets and tighten the timings on the me kit. Which I had up to 3400 with the XMP cl14 3200 timings no worries.

https://imgur.com/rTjVvRH
X470 Taichi, 2700X, 16GB GSkill c14 @3200, 960Evo 500, 860Evo 1TB, GTX1080, RM850x, Celsius S36, Define R6 usb-c
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