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VRM on the new AM4 motherboards - Page 87

post #861 of 1994

Empirically, going only from my own experiences and those that I've witnessed and verified first-hand, they've always had trouble at the low-end... like every other vendor. They've just happened to sell loads of low-end boards relative to their total sales because they've generally only had a few models in the performance space per socket. However, their 'best' products have, again: empirically, been quite good. Reviews and consumer complaints tend to tell the same tale. No hard, conclusive numbers to back it up, unfortunately, but if they were truly a trainwreck far beyond the big-name vendors based on the industry-available numbers I doubt that AMD would sell them licenses for their highest-end chipsets.

 

What I'm saying is that it's very easy to build a mountain out of a molehill on the internet and that's what happens very often with less popular brands. All of the vendors struggle to make reliable £50 motherboards. All of the vendors generally make reliable £200 motherboards (obvious exceptions exist in both cases, AM3+ was a major source of outliers). I've probably bought about 80 motherboards over the past few years at both extremes and my pitifully small sample-size and admittedly subjective empirical experiences  shape my purchasing decisions where solid statistics are unavailable. My past experiences with motherboards towards the top of Biostar's ranges made me much less wary of taking a shot with the GT7, especially seeing as it's in use by known professional overclockers who will find a glaring hardware weakness quickly and decisively. The components checked out, it passed the extreme-overclocker taste test, and the most recent high-end motherboards by Biostar on the Intel side have been well-reviewed. It wasn't the certainty of maths, but buying the GT7 was far from flying blind.

 
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post #862 of 1994
Ok so weeded through the taichi stability issues. I am fairly certain i found the culprit.

For a 1.40 set in bios 1.40 measured at socket overclock your going to want llc lvl 1.....

Apparently on 1.94a the tables are literally backwards....lvl 5 delivers the least voltage...1.36v @ socket.

Lvl 3 1.38v @ socket...

Seems they have it 100% backwards...

For soc 1.062 lvl 1 llc = measured 1.050 at socket.

Hope this helps....

This proves yet again only socket matters wink.gif
Edited by chew* - 4/8/17 at 1:11pm
post #863 of 1994
Quote:
Originally Posted by chew* View Post

Ok so weeded through the taichi stability issues. I am fairly certain i found the culprit.

For a 1.40 set in bios 1.40 measured at socket overclock your going to want llc lvl 1.....

Apparently on 1.94a the tables are literally backwards....lvl 5 delivers the least voltage...1.36v @ socket.

Lvl 3 1.38v @ socket...

Seems they have it 100% backwards...

For soc 1.062 lvl 1 llc = measured 1.050 at socket.

Hope this helps....

This proves yet again only socket matters wink.gif

I think Asrock considers that a " feature"

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post #864 of 1994
Would be nice if they sent me the memo lol...
post #865 of 1994
Quote:
Originally Posted by chew* View Post

Would be nice if they sent me the memo lol...

You surely aren't the first one to be taken by surprise by that - the Vishera thread would have a confused Asrock user drop every so often.

Socket temps seemed to plague the Asrock 990 boards - the only one I have any experience with was the Extreme 3 . Which has been a good board but it really didn't have much business pushing 6 or 8 core chips very hard. Bios was fine but the LLC was terribly heavy handed and it was a very warm running board.
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post #866 of 1994
Quote:
Originally Posted by cssorkinman View Post

You surely aren't the first one to be taken by surprise by that - the Vishera thread would have a confused Asrock user drop every so often.

Socket temps seemed to plague the Asrock 990 boards - the only one I have any experience with was the Extreme 3 . Which has been a good board but it really didn't have much business pushing 6 or 8 core chips very hard. Bios was fine but the LLC was terribly heavy handed and it was a very warm running board.

Socket lever when clamped with a cpu in it did not feel as "firm". I can check brand to compare later. Plenty of boards here.

Vrm temps are stellar @ 1.40 sub 60...more on low side of 50s...

Of course i do not believe software so take that with a huge grain of salt.

So far i can not complain and now that i have llc sorted 1 hour plus in at 3900 which is min OC expected from this cpu....max is 3950....woopy doo lol.

You get idea though. It's hitting target i expect all boards to hit @1.40....and doing so with 32g @ 3200 14-14-8-14-34.

That certainly counts for something as i fully expected dual rank 32g to cost a hit in cpu speed...
Edited by chew* - 4/8/17 at 2:32pm
post #867 of 1994
Quote:
Originally Posted by chew* View Post

Ok so weeded through the taichi stability issues. I am fairly certain i found the culprit.

For a 1.40 set in bios 1.40 measured at socket overclock your going to want llc lvl 1.....

Apparently on 1.94a the tables are literally backwards....lvl 5 delivers the least voltage...1.36v @ socket.

Lvl 3 1.38v @ socket...

Seems they have it 100% backwards...

For soc 1.062 lvl 1 llc = measured 1.050 at socket.

Hope this helps....

This proves yet again only socket matters wink.gif

The graph at the right hand side of BIOs suggests the LLC level 5 has the greatest droop. At least that's what I saw in the Level1Techs review.
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post #868 of 1994
Lol...its there...never even paid it any attention..
post #869 of 1994
Did some quick and dirty tests @ 1.350, LLC Level 1, on the ASUS Prime X370-Pro. The tests were 5 runs IBT (30 mins) @ Max (13890MB), and 20 mins of Prime 95 @ 512/1024 FFT, 12288MB

BIOS 0515 Settings:
- CPU: 3800MHz (152 FID / 8 DID) @ 1.350V
- LLC: Level 1 VCore, Level 1 VSoC
- RAM: 2400MHz 12-12-12-32 @ 1.25V
- Everything else: Auto

21°C ambient room temperature. 82W total system draw at the wall @ idle (Cool n' Quiet not working).
System specs in signature.

IBT run:
- Speed: 170GFlops
- Total system draw: 258W
- CPU: 61.3°C, VRM: 54°C, Chokes: 72°C
- VRM heatsink is midly warm to the touch but not at all uncomfortable (too reflective to get a good reading with IR thermometer I think)

Pics:
Warning: Spoiler! (Click to show)
I moved the thermometer around looking for the hottest spots during the hottest part of the run, and that's what I put as the choke temps and tried to capture in the pics.
post #870 of 1994
Exactly what i said. Preety warm chokes
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