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edit: Ordered a cooler for my CPU, its a little big
So I got my new PC with a sweet CPU and Case
But apparently it gets throttled and reaches 100 Celsius. I don't what that means though (does it mean my PC can't run?)
Can anyone give advice on what to buy?
Here's my Casing
CPU: i7-4790k
I don't know how to attach either, to be honest, I'm kinda lost:
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United Kingdom20145 Posts
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Is this 100C before any overclocking or anything? If so that shouldn't be right, even for a stock cooler running at almost full load.
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United Kingdom20145 Posts
On December 21 2014 08:51 phar wrote: Is this 100C before any overclocking or anything? If so that shouldn't be right, even for a stock cooler running at almost full load.
It's not uncommon on a 4790k. The Haswell quad cores that work well with the stock cooler run around ~3.7ghz@1.0v at turbo. These CPU's often use 1.25v and some mobo's lock them into that for 4 core turbo, they also have hyperthreading so their power usage (heat output) is literally twice as high, maybe a bit more.
When i say work well, i mean have be at kinda awkwardly high temperatures and be unable to run power heavy stress tests - so if you double power usage on top of that, it doesn't hold up very well
there is almost no difference between a 4790k@1.25v@stock and a 4770k that has been overclocked to 4.5ghz@1.25v (aside from the devil's canyon changes, most significant of which is ~10c temperature drop.. but that won't fix things if temps are 40c too high)
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so wouldn't it be better for him to just change/reset the bios settings than to buy a cooler?
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United Kingdom20145 Posts
On December 21 2014 19:32 xM(Z wrote: so wouldn't it be better for him to just change/reset the bios settings than to buy a cooler? You mean underclock his 4790k?
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that's semantics. if the mobo was clocked by default it's not "underclocking" if you revert it to default. my ASrock mobo came with C and S states disabled plus turbo always on as default settings. i didn't underclock anything when i enabled C, S and removed turbo.
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United Kingdom20145 Posts
It's not semantics if the stock settings of the processor are defined as 4ghz base on all cores, turboing to 4.2-4.4 depending on load on cores and power usage on the chip. The mobo might be overriding some turbo behaviors (tdp throttle, limit on clock+volts when using all cores) which would make a difference but not completely change the experience.
Why would you ever remove turbo? Again, that's part of stock spec - they assign a maximum power value that the chip will fit into by varying it's clocks by turbo boost, holding the max stock spec if possible - and also a base clock which it will never drop below, short of temperature throttling
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Is it guaranteed I need a cooler?
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On December 21 2014 06:00 Torte de Lini wrote: But apparently it gets throttled and reaches 100 CPU. I don't what that means though (does it mean my PC can't run?)
Just to clarify... does the CPU reach 100 degrees or 100% use?
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United Kingdom20145 Posts
100c easily, it's in the pic
you should remount the stock cooler torte (or just check contact at least, if you don't have extra thermal paste), reset bios to optimized defaults, maybe experiment with undervolting etc but if it works, it'd still be quite hot if you want to run 4790k-level frequencies
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On December 21 2014 22:13 Cyro wrote: 100c easily, it's in the pic
you should remount the stock cooler torte (or just check contact at least, if you don't have extra thermal paste), reset bios to optimized defaults, maybe experiment with undervolting etc but if it works, it'd still be quite hot if you want to run 4790k-level frequencies
Confusion level is about 100 celsius right now.
I mean, if it's guaranteed to be an issue. I'd rather save the hassle and just wait for the cooler to come (23rd of Dec.)
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you just gave very few details about this in your op which led people into making a bunch of assumptions. CPU throttling is when the CPU switches from a higher to a lower operating frequency in order to reduce the heat generated by it or when it's trying to conserve power.
measure stuff (via software: sensor readings and such), see what's wrong then try and fix it.
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United Kingdom20145 Posts
On December 21 2014 23:17 xM(Z wrote: you just gave very few details about this in your op which led people into making a bunch of assumptions. CPU throttling is when the CPU switches from a higher to a lower operating frequency in order to reduce the heat generated by it or when it's trying to conserve power.
measure stuff (via software: sensor readings and such), see what's wrong then try and fix it.
I provided a screenshot that the OP sent me, look at the second post. Cores @99c, 3400mhz (instead of 4200mhz) and throttle sensors tripped within 20 seconds of a reasonably light CPU load (but 100% on all cores)
"Core 0 thermal t.." maximum states "Yes" and that does not happen unless you hit the 100c throttle, but there's plenty of other evidence
The VID sticking at 1.2 seems odd to me though, there is probably a better core voltage sensor somewhere, because VID isn't neccesarily the same as core voltage and even when they match up, it can display inaccurately
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i had no idea that's his pic; thought it's a random exemplification of core possibilities. it looks overclocked though. i4790k is at 4.0G base and 4.4 turbo and i4770k is at 3.5G base and 3.9G turbo. his cpu works at 3.4G base and 4.4G turbo?. it doesn't make sense. also, from the average freq, it looks stuck at turbo most of the time. ps: first, have someone look at your bios if you don't know what you're doing.
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United Kingdom20145 Posts
his cpu works at 3.4G base and 4.4G turbo?
the 3.4g is from thermal throttling
The average frequency is inflated from running hwinfo for a very long time at 4400mhz on desktop (max performance power plan, no idle states) before loading cpu
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well then, there's no way you're running a constant 4.4G on any stock cooler without throttling
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is the cooler sitting properly?
min temp is so high
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Yeah, this looks like an improperly installed cooler than anything else.
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United Kingdom20145 Posts
is the cooler sitting properly?
min temp is so high
Could be bad contact, but i think the issue would still be there to some extent. The temps are not that abnormal when you're running at ~4.4ghz 1.2v and completely disable all idle states - my CPU sits only ~10c cooler with 17c ambients and a Silver Arrow on it at a little bit higher vcore
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