New Kabylake (i7 7700k) running hot with Evo?

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hammer326

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Nov 29, 2012
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Hello,

Just rebuilt much of my system and it's been quite an ordeal. First my mobo shipped with a BIOS incompatible with Kabylake so $850 of new parts sat for a week while Amazon jerked me around with buying a cheap skylake pentium to drop in so it would boot so the BIOS could then be flashed.

After ALL that, I fired up only to be greeted by abnormally high temps (not overclocking at all) both idly and under load. I run a Hyper 212 Evo dual fan on it. I have the fans set up what I'm told is a "push-pull configuration" such that the fan facing my CD drive's rear is pulling air into the heatsink, and the fan opposite it pushing it away, straight into my rear case fan blowing it out. I have my doubts that the fan configuration's the issue.

Anyway, I've since reseated that entire heatsink with a more experienced friend who noticed I was a little sparse with the thermal paste. We scoured both parts, added more, and tried again. The images below are what I'm now getting after a ~30 minute session of Elite Dangerous and Battlefield 1 (combined, not a half hour of each), easily the most intensive games I own. While they seem better than what I remember I still find it a bit high, but you guys tell me.

I'm out of ideas honestly, and have read a lot of similar cases with these kabylakes; wondering if a Skylake would've been a better choice as someone who doesn't overclock but would love the option to, though it does not look like it's gonna happen here.

System:
Windows 7
Gigabyte Z170X gaming 7 motherboard
16GB Corsair Vengeance RAM
i7 7700k (obviously)
Hyper 212X Evo dual fan heatsink
GTX 1060 6GB

One thing I'd like to focus on is the coretemp info besides the temperature-- I know NOTHING about voltage or frequency, but I notice the former seems quite high compared to other threads who are actually getting more performance (OCers etc) and the latter, frequency, seems to hover around 1000mhz for a few minutes during startup, even during my initial opening of a web browser and subsequent browsing. Then it moves to 4500mhz, seen in the images below, and stays there, whether I'm staring at my desktop or running BF1. Do either of these numbers being high imply that it's at abnormally high load or is that not how that reading should be interpreted?

Thanks for sticking with me, I tend to ramble but hope to cover all bases at least so this can be figured out. And of course, thanks in advance for any and all advice, I sure need it.


Coretemp during BF1 in windowed mode:
http://imgur.com/iXjYn0w

Idle at desktop not long after:
http://imgur.com/YPB6VJR
 
Solution
Ecky
70c is still 30c away from overheating. Lowering them further will not improve reliability or performance.

EDIT: Everything looks fine.

I hope I don't come off as condescending, but it's pretty well documented that you need a 2xx chipset to work out of the box with a Kaby Lake CPU - these chipsets were released alongside it, for it, and cost about the same but with more features. The older 1xx chipsets hit the market before Kaby Lake existed and thus need a BIOS update to work with them. Basically the only people using 1xx chipsets with Kaby are those who already had Skylake CPUs and swapped them out when Kaby Lake launched.
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mikeynavy1976

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I'll let a more experienced expert comment but, for comparison, my values on a recent build with Kaby Lake with Corsair H60 cooler are a little cooler. Using standard Phanteks case fans that aren't high static pressure I was getting about 35-40C at idle and about 60C at full load for about an hour (and this is in Hawaii with ambient temperature around 25C. You need to factor ambient temp into how hot things are too. That being said, I just replaced my case fan and radiator fan with 2 x Corsair SP120 high performance. I had to lower the speed of the front case fan because it was LOUD at full speed. Because the H60 pump needs to run at full power off of the CPU_OPT header, which is also linked directly to the CPU_FAN header my radiator fan (set in exhaust) is also at full power (and even though it is only 3-pin non-PWM it still throttles periodically...not sure why). Anyways, right now my ambient temp is 25C and my current core temps (browsing) are 35C. Processor is stock speed and Asus motherboard has voltage hovering around 1.26V. Hope this helps.
 
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Makentox

Makentox

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212 evo is great but not the best these days.
Free quick fix would be to edit your voltage in bios, look for some guides on the internet on how to find stable adaptive voltage. 212 evo is more than enough for your cpu at stock speeds.
 
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Ecky

Ecky

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Feb 3, 2013
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70c is still 30c away from overheating. Lowering them further will not improve reliability or performance.

EDIT: Everything looks fine.

I hope I don't come off as condescending, but it's pretty well documented that you need a 2xx chipset to work out of the box with a Kaby Lake CPU - these chipsets were released alongside it, for it, and cost about the same but with more features. The older 1xx chipsets hit the market before Kaby Lake existed and thus need a BIOS update to work with them. Basically the only people using 1xx chipsets with Kaby are those who already had Skylake CPUs and swapped them out when Kaby Lake launched.
 
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hammer326

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Awesome input all around, thanks everyone!

A few followup questions before we call it:

1. The first reply up there mentions the Corsair SP 120's as fan replacements the evo. While I find it hilarious that an aftermarket heat sink to begin with would need aftermarket fans, would those be worth thinking about to quiet this thing down a bit WITHOUT compromising noticeably on cooling? I'd really like to quiet it down a bit, the second fan closer to the rear case fan is a bit loud, both a "clicking" in low rpm (you have to really listen but still a bit annoying) and a ...for lack of a better term "whining" during higher rpm's, but not to the point where I think it's defective or anything, i.e. coil whine.

2: Concerning the actual temps--averaging or floating around 70 under load is just A-ok then? Those 83+ degree spikes are NO cause for alarm? Just seems high even for a spike but I'm new at this.


Thanks again, a lot!
 
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hammer326

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Not condescending at all, thanks for even posting. I'll address your last paragraph in a second.

I can really get all the way up to 100 degrees before there's a real problem then? Some other topical threads on here you'd swear the OP AND repliers were having moderate heart attacks at the idea of hitting 70.

You make a fair point about the 2XXX mobos, but it's not a point I have to like. I really don't get why these were made such that you can't even boot with one in, or what's even so different about them to cause this incompatibility and warrant a BIOS flashing, since I'm told they don't exactly blow skylakes out of the water (this one was about $30 more than a 6700 and I'm told that's basically what the negligible performance gain's worth). I had a similar issue on my old mobo with a new GPU that wouldn't be recognized before a BIOS update, and while it was irritating I at least could run through integrated graphics and get it sorted. Idk, but in my view if you have the proper socket, in this case LGA 1151, that should guarantee full plug and play, and as I said I don't see why any less is the case, but I don't expect all my opinions to be popular.

Pardon the rant, and thanks again for the input, maybe you can tell me even more I don't know haha. Take care!
 
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Ecky

Ecky

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Simply put, Kaby Lake IS a redesign, if only a small one, and some components are majorly different. Intel may not have had them finalized when Z170 boards were hitting the market, and so couldn't include the code to recognize them.

You'll get varying opinions about temperature, but Intel validates these CPUs up to TJmax at stock voltage and clock. I would not be concerned with the temps you have, but neither would I really like my CPU spiking into (let's say) the 90's during normal usage, even if I know Intel allows these CPUs to run in datacenters at those temperatures for years or even decades. It's not entirely rational or based in fact.
 
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