Worth getting a cooler for this Intel i5 6600K chip?

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holic.michal

Oct 1, 2018
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Is it worth getting a cooler for this Intel i5 6600K chip?

Currently running on a stock cooler with overclocked BCLK to 105 MHz (memory speed OC'd as well) running effectively at 4095 MHz (default 39 multiplier).

My worry is that the VCORE hangs at around 1.28/1.30V, but with OCCT running it is 1.36V, sometimes 1.38V. I read on the forums people can get much higher frequencies on these voltages, although I am using auto-voltage (not a constant).

Does it mean my chip is poor and better cooler won't help?
Or maybe the auto-voltage increases VCORE too high?
 
Solution
G
It all depends on your system. Your motherboard and CPU. Some CPUs just overclock better than others. I think you'll be hard pressed to hit a 4400MHz daily OC on the stock cooler but you might. The NH-U12s looks like a solid cooler.

The crashes you are experiencing probably need to be brought up in another thread. I've never had a spontaneous crash that wasn't related to a problem.
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inzane4all

inzane4all

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Jun 20, 2018
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First off, when OC, never leave anything on auto. It's better to set the values manually as leaving things on auto will almost always raise the voltages at insane ranges.

Better coolers always help, especially close loop liquid coolers. There are great HSF coolers than can performing as good (sometimes better) than AIO Closed Looped Coolers. It all depends on the preference you are looking at. If you go HSF, I strongly recommend Noctua HSF. Good luck!
 
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grimfox

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Jun 2, 2009
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I think the typical way to oc those chips is to increase the mult and leave the bclk alone. Not that I'm an expert. I got my first chip to 4500MHz without messing with voltages that way (then it blew a core) and the RMA replacement chip I could only keep stable at 4400MHz. The first chip was under a 280 AIO corsair loop, the second one I've since put under an EK based loop also with a 280 rad but now with the GPU in the loop.
 
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H

holic.michal

Oct 1, 2018
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I want to leave the voltage at auto, I get 0.83V while idle, 1.30V while gaming and 1.38V while running a stress test. Always below the safe 1.40V. So leaving at auto should prolong the life of the CPU... I don't need to have constant ~1.35V.

Noctua NH-U12s might be a good choice for HSF too, right? It's smaller but I need access to RAMs since sometimes the PC crashes and to boot it I need to reattach RAMs and reset BIOS.

I switched BLCK back to the default 100 and currently running 4200MHz on a stock cooler (cooled case though) with temperatures never reaching 70C during stress test. Maybe I can even bump the frequency to 4400MHz and screw the aftermarket cooler haha... just need to watch the voltage.
 
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grimfox

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Jun 2, 2009
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It all depends on your system. Your motherboard and CPU. Some CPUs just overclock better than others. I think you'll be hard pressed to hit a 4400MHz daily OC on the stock cooler but you might. The NH-U12s looks like a solid cooler.

The crashes you are experiencing probably need to be brought up in another thread. I've never had a spontaneous crash that wasn't related to a problem.
 
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Solution
H

holic.michal

Oct 1, 2018
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I suspect those crashes were related to DRAM being overclocked from 2667 to 2800 MHz. I usually got them while alt-tabbing game or unrelated BSOD. Same thing happened when I tried to OC them even higher.

I am leaving my OC at 4300MHz. After 10 minutes of OCCT the stock cooler was running at 100% and temperature started being unstable at ~70C, with 82C spikes on one core (other cores were 5C cooler but had those spikes as well).

This was with the case cooler set to low. If I set it to high the temperatures drop by 5C and the stock cooler also stabilizes its RPM a tad lower.
 
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