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VRM on the new AM4 motherboards - Page 100

post #991 of 1990
http://www.ebay.com/itm/361253756416?_trksid=p2060353.m1438.l2649&ssPageName=STRK%3AMEBIDX%3AIT
post #992 of 1990
Quote:
Originally Posted by AlphaC View Post

As I said before it makes sense they would use it in that mode rather than interleaved due to the current limit on the PK618.

They can't use it in interleaved mode. wink.gif
Quote:
Originally Posted by AlphaC View Post

The Richtek one only accepts one PWM Input:

http://www.richtek.com/Products/MOSFET%20Driver/RT9624F

Yeah it's a single driver. The IR3598 in dual driver mode is just the same thing twice in one IC. smile.gif
post #993 of 1990
Is VRM on Giga x370 K3 same as the b350 gaming 3?
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post #994 of 1990
Only difference seems to be the clock gen on the K3 for BCLK OC.
post #995 of 1990
Is the K3 worth it over B350 gaming 3? It also seems that K3 have better VRM cooling. Some users said that gaming 3 has 2 mosfets on the back side, is that a problem?
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post #996 of 1990
how hot is safe for VRM actually?.. i got 60~70C on my board here.. kinda toasty IMO headscratch.gif
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post #997 of 1990
Quote:
Originally Posted by SteelBox View Post

Is the K3 worth it over B350 gaming 3? It also seems that K3 have better VRM cooling. Some users said that gaming 3 has 2 mosfets on the back side, is that a problem?

It's right that two of the lowside FETs are on the backside of the board.
Actually I don't know any reports about the cooling of the K3.
Quote:
Originally Posted by sakae48 View Post

i got 60~70C on my board here..

That isn't a problem, less than 70 degrees should be safe on any board.
post #998 of 1990
Thread Starter 
The issue with The Gaming 3 is Bios.

Voltage options are minimal.
cpu vcore offset.
cpu soc offset
dram voltage

THAT IS ALL!

I have no idea what options the K3 and K5 have but I would surely hope they have something more in common with the Gaming 5/K7 options wise!

Either way 4Ghz is probably not recommended for these 4 phase boards. The likelihood is you will trash your board sooner rather than later.
You would need to water cool these VRM's... (I've been thinking about that for my Gaming 3 but then I'm limited by BIOS and can't push more voltage or tweak it either way)
    
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post #999 of 1990
Quote:
Originally Posted by Nighthog View Post

The issue with The Gaming 3 is Bios.

Voltage options are minimal.
cpu vcore offset.
cpu soc offset
dram voltage

THAT IS ALL!

I have no idea what options the K3 and K5 have but I would surely hope they have something more in common with the Gaming 5/K7 options wise!

Either way 4Ghz is probably not recommended for these 4 phase boards. The likelihood is you will trash your board sooner rather than later.
You would need to water cool these VRM's... (I've been thinking about that for my Gaming 3 but then I'm limited by BIOS and can't push more voltage or tweak it either way)

What is your current OC? If I buy Gaming 3 I was thinking of holding R5 1600 on 3,6-3,7Ghz. I think that VRM temp shouldn `t be to high (below 80C) for that OC. I am only worried of that mosfets on backside, they won`t have any cooling.
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post #1000 of 1990
Quote:
Originally Posted by Nighthog View Post

I have no idea what options the K3 and K5 have but I would surely hope they have something more in common with the Gaming 5/K7 options wise!

That's a UEFI screenshot from an early UEFI version of a K5 / K3: http://www.tweakpc.de/forum/844066-post4.html
Not even BCLK OC was implemented. Hopefully it's not the same nowadays...
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