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How important is VRM cooling?

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Jeff G

Member
Joined
May 22, 2016
On my new build, I was going to use my cpu waterblock from my last build. But I see EK makes a monoblock for the Gigabyte boards that cools VRM too.
Is it worth getting a monoblock vs just a cpu block? The plan is a mild overclock on a 6700k, haven't decided on a board yet.
 

Mr.Scott

Beamed Me Up!
Joined
Jun 9, 2013
Not worth it.
Only the FX line of AMD processors requires any sort of extra VRM cooling, and even that is negligible if you're not doing major league overclocking and have a decent board.
 
OP
Jeff G

Jeff G

Member
Joined
May 22, 2016
Not worth it.
Only the FX line of AMD processors requires any sort of extra VRM cooling, and even that is negligible if you're not doing major league overclocking and have a decent board.

Im looking at mid-range Z170 boards ($150-200 range) with a 6700k. The plan is 4.6ghz daily overclock. Most looked to have good heatsinks from the factory, but with no cpu fan I didn't know if the monoblock was recommended?
 
OP
Jeff G

Jeff G

Member
Joined
May 22, 2016
Nah, just a little airflow is fine.

I have my 360 radiator with push/pull configuration on the front of the case for intake, and two 140mm fans on top and one 140mm on back for exhaust. That's pretty much it for case fan spots.
 

wingman99

Member
Joined
Dec 10, 2003
I went 5 years with a overclocked sandybridge with vary little cooling for my VRM on A Gigabyte-Z68A-D3-B3.
 

caddi daddi

Godzilla to ant hills
Joined
Jan 10, 2012
I've run some pretty extreme clocks on my 8 core fx and never used water on the vrms, on skylake and devils canyon, even at extreme clocks i would never even think about it, I think the vrm is in the cpu so that's all you need to cool.
 
OP
Jeff G

Jeff G

Member
Joined
May 22, 2016
In my case, is it worth getting a monoblock for them? Or is the airflow in the case combined with the stock heatsinks good enough?
 

wingman99

Member
Joined
Dec 10, 2003
In my case, is it worth getting a monoblock for them? Or is the airflow in the case combined with the stock heatsinks good enough?
How high are you going to overclock? you should be fine with a clock of 4.6GHz 24/7 air cooling using the stock VRM heatsinks on a good board for 3 years.
 

Silver_Pharaoh

Likes the big ones n00b Member
Joined
Sep 7, 2013
Wrong, the VRM is on the MB, here is the chip.
What you need to cool is the MOSFET's that is part of the (V)oltage (R)egulator (M)odule

I recall seeing newer Intel CPU's having part of the VRM on die? :shrug:

But yeah, all you will ever need is a fan blowing over the VRM's on the motherboard. a 60mm fan works as does a 120mm. Really any fan will do. :)
 

Tír na nÓg

Member
Joined
Sep 19, 2015
I do actively cool the VRM's on my x99 board, but I push quite a lot of vCore and VCCIN into the chip (1.34v/2.15v respectively), and it is watercooled, so zero airflow on the VRM's. I cool the back of the socket as well: package has the same temp as the hootest core, while before cooling, it was 6/8c above (82c hottest core for 88/90c package).