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i7 4770K Core Temperature Spikes. Is it "normal"?

post #1 of 4
Thread Starter 
I'm running 4.6GHz at 1.262voltage at the moment. RAM on default settings or I blue screen.

The thing I notice via coretemp is that the CPU cores run at an average of 70's C; that is, constantly fluctuating but staying at that range.

BUT at certain points, either Core #1 or Core #2 (the cores that seem to get the hottest), will spike to 85 or 86C.

BUT then drop back down to 70's or even 60's C.

Why do CPU cores do this? Is this normal across all intel line of CPUs?

I get really low temperatures, for 90% of the time, but those 1-2second CPU spikes at 85's push me to the limit.

Is 1 second of a CPU core fluctuating to temperatures like this, 90C really that bad?

why do they fluctuate like this? is it coretemp or something?

And what if I'm getting really good 70's Celcius across 3 cores but 1 core is the culprit? can I still maintain my high overclock though that ONE core maybe getting high temperatures, as long as I am not shutting down/thermal throttling/blue screening?
post #2 of 4
Does the OS just run something? CPUs nowadays jump 20-30 degrees in 2 seconds and back again.
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4790K 4.6G 1.24v/1.74v, 5.1G 1.35v validation. GA-Z97X-Gaming 7 Tri-X R9 290 1100/1350 +0.012v G.Skill 2400 c10 
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PC
(9 items)
 
  
CPUMotherboardGraphicsRAM
4790K 4.6G 1.24v/1.74v, 5.1G 1.35v validation. GA-Z97X-Gaming 7 Tri-X R9 290 1100/1350 +0.012v G.Skill 2400 c10 
CoolingMonitorPowerCase
Noctua NH-D15 24EA53 IPS 76Hz OC EVGA 1000 G2 Phanteks Enthoo Pro 
Audio
SoundMagic E10 
  hide details  
Reply
post #3 of 4
Thread Starter 
Quote:
Originally Posted by fateswarm View Post

Does the OS just run something? CPUs nowadays jump 20-30 degrees in 2 seconds and back again.

"Does the OS just run something"

what?
post #4 of 4
It spikes when its being used, as fateswarm suggested something is probably happening in the background. OS tasks, updates, AV, etc.

For your info "what" is not helpful.
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