Huge improvement in vrm/chipset. Why?

[Shadow_Storm56]

I previously had an x79 chip that had a very high overclock range, it was a 3930k. it's vrm used ton hit 100 easily. now I have a 6850k with a high overclock and its vrm hits like 50 max. it is lower now due to water cooling but whats so different? both were high level asus boards.... I guess one musta had a better design. any thoughts?

[Sakkura]

On paper the 6850K has a slightly higher TDP, but in practice its power consumption is probably lower. 14nm transistors instead of 32nm, and 40% of the cores + cache disabled.

[Shadow_Storm56]

On max overclock the draw for the cpu fluctuated between 134 and 142. 

[Shadow_Storm56]

You lost me there... I haven't disabled any cores or cache  

[Sakkura]

Just now, Shadow_Storm56 said:

You lost me there... I haven't disabled any cores or cache  

The Broadwell-E chips are made with 10 cores and 25MB of L3 cache. The Core i7-6850K has 4 cores and 10MB L3 cache disabled. That means power consumption is reduced.

[vorticalbox]

@Shadow_Storm56 my 8350 4.5 Ghz 1.375 V heats my VRMs to 115c

[manikyath]

wait... are you saying that in the second case you watercooled the VRMs? (or am i misunderstanding?)

 

in case i understood right, the answer is pretty simple:

VRMs can handle very high temperatures, they truly shine at temperatures that would make your CPU melt.

and because the temperature delta between ambient air and the heatsink determines the amount of heat a heatsink can push into the air, designers of motherboards have just figured to *by default* let them run toasty, instead of putting a massive heatsink on them.

 

what watercooling the VRMs does is change that default cooling setup by one that needs a much lower temperature delta to push the same amount of heat -> lower temperatures.

 

TLDR: temperatures do not reflect the amount of heat generated, but rather how efficiently that heat is bled off into the air.

[Shadow_Storm56]

Ok and no I water cooled it just for looks. even on air the vrm was like 50c max whare as on Air on my old setup it hit 100 with ease. wait so are you guys saying the 6850k is just the 6950x with cores disabled,??? 

[hihihi8]

5 minutes ago, Shadow_Storm56 said:

wait so are you guys saying the 6850k is just the 6950x with cores disabled

yep, just like how the 980ti is just a Titan X that has a less "Perfect" gpu die, so it has less CUDA cores enabled. Making an individual production line for each model of gpu/cpu would cost too much

[Shadow_Storm56]

And no one has ever managed to Re enable them? how did theyou do that 

[MatsNorway]

That was a thing for 15 years+ ago.. opening up pipelines someone called it then..