This is not so much a question as something i recently found out. My old AsRock z170 pro4s seemed to work just fine. It was able to overclock my i5 6600k and rarely had any issues.
There was one quirk however and it had to do with how it interacted with my i5 6600k. One of the cores( the second one) was always anywhere from 4c to 8c higher then the rest of the cores. Of course the first thing I thought was I has set either the heat sink incorrectly, or had not applied enough M4. This was on an H80i thought i should mention this. To be fair, I was able to put a modest overclock of 4.2ghz on the cpu without raising the vcore. I could have gone higher . I know this because for kicks and giggles put a stable oc of 4.5ghz with a 1.385 vcore. However that one core would climb into the 70s celsius. The overclocks where not too bad for a 100 dollar motherboard.
Recently I bought a new motherboard. An MSI z270 SLI. I also bought an H100i v2. I did get the cooling first and tried it out with the old motherboard. I was having the same temp issue. On the new motherboard all 4 cores stay around the same temp. There is no huge fluctuation with one core.
I think that the AsRock motherboard was somehow throwing more juice onto that second core.
On this motherboard I get a stable oc of 4.5ghz. at 1.375, with temps at load about 60c.
There was one quirk however and it had to do with how it interacted with my i5 6600k. One of the cores( the second one) was always anywhere from 4c to 8c higher then the rest of the cores. Of course the first thing I thought was I has set either the heat sink incorrectly, or had not applied enough M4. This was on an H80i thought i should mention this. To be fair, I was able to put a modest overclock of 4.2ghz on the cpu without raising the vcore. I could have gone higher . I know this because for kicks and giggles put a stable oc of 4.5ghz with a 1.385 vcore. However that one core would climb into the 70s celsius. The overclocks where not too bad for a 100 dollar motherboard.
Recently I bought a new motherboard. An MSI z270 SLI. I also bought an H100i v2. I did get the cooling first and tried it out with the old motherboard. I was having the same temp issue. On the new motherboard all 4 cores stay around the same temp. There is no huge fluctuation with one core.
I think that the AsRock motherboard was somehow throwing more juice onto that second core.
On this motherboard I get a stable oc of 4.5ghz. at 1.375, with temps at load about 60c.