i7-4790K temp readings very different in bios vs. HWmonitor

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AlyxMaz

AlyxMaz

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I just built a new system and it's my first build without help from an expert.

i7-4790K
AsRock z97 Pro 3
16GB RAM
128GB SSD
1T HDD
Zalman z9 case with 3 fans working.
560W PSU

I don't game but I do video editing. I have no intention of overclocking at this point and I'm using the stock fan and onboard graphics for the time being. I intend on upgrading my graphics and PSU at a later date.

I am concerned about overheating because my old PC constantly overheated at the end of it's life. I am getting 2 different readings. BIOS says 60c and HWmonitor says its at around 35c. I also have A-tuning that came with my AsRock motherboard and it reads at around 36c. Why is BIOS reading the temp so much higher?

It seems to be working perfectly fine though I haven't yet tried to run my editing software.
 
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I'm surprised Intel still packages the same cooler with the -4790K. You wouldn't want to use the stock cooler with an i7-4770K overclocked to 4 GHz, and that's basically what the -4790K is. I would recommend getting something a little better, even if its a cheaper one such as a Coolermaster Hyper TX3 or 212 EVO.
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swiftleeo

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Your probably reading the package temperature. Your actual temp is the CPU under temperatures subcategory above motherboard.
 
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AlyxMaz

AlyxMaz

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So I've looked into it a little more and it seems that the package temp and each of the 4 core temps run high, between 70-85c when doing anything graphics related. I got the highest temp reading when I was changing out the picture on my business cards, which I thought was a bit odd. Anyway I've read several places that not only does the i7-4790K run a little hotter than other processors, it will also run hotter when using on board graphics.

So, I plan on getting a GPU and a new PSU soon. Am I to assume that my CPU temps will decrease when I make that upgrade?
 
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swiftleeo

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Do you have an aftermarket heatsink or water cooler? The stock fan is barely passable for the i7 4790k.
 
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oxiide

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I'm surprised Intel still packages the same cooler with the -4790K. You wouldn't want to use the stock cooler with an i7-4770K overclocked to 4 GHz, and that's basically what the -4790K is. I would recommend getting something a little better, even if its a cheaper one such as a Coolermaster Hyper TX3 or 212 EVO.
 
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swiftleeo

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If you have enough space, the EVO will be adequate. I would recommend something more powerful like a Noctua NHD-14 or 15, but they come with a price tag that is much higher and less affordable than the $35 CM Hyper 212 Evo. Let me put it this way: It is far better than the stock cooler, but if you plan to overclock at a later date, you may want to upgrade.
 
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JackNaylorPE

JackNaylorPE

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the 4770k essentially comes outta the box wiyth the ability to "overclock to 3.9 (3.5 base and turbos to 3.9 .... 4790k comes out at 4.4 (4.0 base and turbo to 4.4)

 
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oxiide

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Turboboost is (up to) 3.9 GHz when only a single core is in use, and even then only situationally. That's a big difference in heat generation compared to four cores all at 4 GHz at all times.

I should have been a little more nuanced: obviously Intel is certain enough that the stock cooler will keep the i7-4790K in spec reliably enough to provide warranty support for it. It just seems like its at the outer limit of its capability at this point. A cheap aftermarket air cooler would be a much more practical way to go, for both temperatures and noise, even if not overclocking.
 
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JackNaylorPE

JackNaylorPE

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No, not generally. Who has 4.0 Ghz at all times ????? This is a thing generally only done by competitive overclockers who use "manual" to eke out that very last bit of performance.... they're likely having cache down at 39 also.

I'm looking right now and my CPU speed is at 800 Mhz. Most folks on Haswell are using adaptive voltage but when I load a decent stress test, all 4 cores hit 4.6 Mhz. As soon as I stop, it drops down and eventually, it settles back at 800 Mhz
 
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