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VRM on the new AM4 motherboards - Page 126

post #1251 of 2005
No offense but 4 gig i hardly ocing on ryzen. Ln2 guys will be the real judge.
post #1252 of 2005
Oh if someone wants to do some napkin math...

Heres something for you.

790fx dr mos msi board. Fet exploded 5.8g cpu test in 3d06( there are far worse load tests ) we were not even warmed up yet...chip had alot more in it.

So do some napkin math and then realize that it hardly ever applies to real world as that board should not have popped...but it did..
post #1253 of 2005
Quote:
Originally Posted by chew* View Post

No offense but 4 gig i hardly ocing on ryzen. Ln2 guys will be the real judge.

Thats just it though. 4Ghz is about as far as anyone not using sub ambient cooling is going to get. There is no need for an excessively robust VRM for daily driver rigs, the silicon just does not scale that high on standard (up to custom water loops) cooling systems.

I don't see much point with the current AMD chips to worry that much about the VRM. Just get whatever board has the other features you need at the price you want, the VRM is not likely going to be your limiting factor if its a decent quality board. Now, if you are going LN2 or cascade, then you may need to look deeper into the VRM quality.
Quote:
Originally Posted by chew* View Post

Oh if someone wants to do some napkin math...

Heres something for you.

790fx dr mos msi board. Fet exploded 5.8g cpu test in 3d06( there are far worse load tests ) we were not even warmed up yet...chip had alot more in it.

So do some napkin math and then realize that it hardly ever applies to real world as that board should not have popped...but it did..

Never had that issue with old 790FX DFI boards with old style VRM's. They may have run hot, but I couldn't kill one. DrMOS boards OTOH, I popped 4 of them in a few weeks with good cooling using a Phenom 9950 @ 3.3ghz.
Edited by KarathKasun - 4/30/17 at 2:47pm
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post #1254 of 2005
Over built has longevity in just about anything...

Meeting the status quo does not last long.

Also fwiw...z270 or whatever that intel chipset is...compare those pwm designs...then ask why a 4c8t chip has a better vrm than ryzen boards...

Then go look at the 8c/16t boards...

Especially go look at what the real titanium boards offer....
Edited by chew* - 4/30/17 at 2:49pm
post #1255 of 2005
Quote:
Originally Posted by chew* View Post

Oh if someone wants to do some napkin math...

Heres something for you.

790fx dr mos msi board. Fet exploded 5.8g cpu test in 3d06( there are far worse load tests ) we were not even warmed up yet...chip had alot more in it.

So do some napkin math and then realize that it hardly ever applies to real world as that board should not have popped...but it did..

Never blown anything on the power delivery system of an MSI board - had something blow on a Foxconn A7DA-S 3.0 AM3 AMD 790GX with a 965 @ stock clocks and volts though. Had less than 10 hours on it. Sounded like a .22 short went off.
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post #1256 of 2005
Quote:
Originally Posted by chew* View Post

Over built has longevity in just about anything...

Meeting the status quo does not last long.

Also fwiw...z270 or whatever that intel chipset is...compare those pwm designs...then ask why a 4c8t chip has a better vrm than ryzen boards...

Then go look at the 8c/16t boards...

Because Intel marketshare is higher and people pay extra for those boards. Taichi has a better VRM than most, if not all z270 boards in its price range. Its not like every z270 board has a godly VRM, there are cheapskate boards as well.

'longevity in quality parts' is kind of a joke too. I have one of those early MSI DrMOS boards ticking away in an old loaner box with no problems (even with a bit of an OC). It just depends on your use case scenario. Moderate OC on meh parts usually wont change much. Pushing right up to the cooling limits of a large HSF or water on meh parts usually results in the magic smoke being released.

This applies to EVERY hobby where performance is a thing. RC car/plane/heli/drone racing, automotive racing/tuning, HAM DXing, and so forth.
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post #1257 of 2005
Ive blown up problem boards...and it just happened that others under same conditions had same thing happen...

790fx msi...asus well did not blow up but literally had to bin for a cold board on 790...

890fx we were killing gigas...the top model board...

990? Well we used the asus for the WR but it had certain trace issues addressed with formula-z...both the giga and msi were problematic.

All based on first hand experience...
post #1258 of 2005
Quote:
Originally Posted by chew* View Post

No offense but 4 gig i hardly ocing on ryzen. Ln2 guys will be the real judge.

 

None taken, as most people who buy these chips and boards will not be subjecting them to liquid nitrogen. In the context of extreme overclocking, sure, there will be different judgements passed based on those needs. In the context of the use-cases for the majority of people buying this platform the requirements are performance and reliability under conditions maxing out around 1.425v sustained as measured at the socket with temperatures controlled solely through ambient cooling. In that context, I don't see a problem, physically, with any of the top-range x370 boards. In that guise anything I speak to or recommend will be under considerations that the average user may have subpar airflow, imperfect ambient cooling, and lack tools for measuring voltage at the socket or power at the wall. That's why, for example, I shy from advising newer overclockers to push 4.0GHz on B350 or low-end X370 without knowing the details of their situation.

 

Under your use conditions, and the use conditions of the liquid nitrogen crowd, things are no doubt different.. but I can only speak to experience with ambient cooling because that's what I do.

 
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post #1259 of 2005
My m4e has a quality vrm....still cranking away on water with a high oc.

Just saying...quality is for the long haul.
post #1260 of 2005
Here is example of brutality on many many many fronts...

I could make a list...just because its a single thread does not make it less brutal...its booting this speed...that alone is harsh..at my temps...-40 draw is much higher than it will be if colder..

Believe it or not this is taxing on alot of fronts...minus vga stress...

32m%207-41_zpsjajv3li0.jpg
Edited by chew* - 4/30/17 at 3:14pm
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