A10-7700k overheating at idle

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freakasis85

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Apr 3, 2014
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Using stock heat sink and fan, the bios is reporting temps up to 70C at idle. I have re-applied the Arctic Silver 5 several times and reseated but the CPU is larger than the base of the stock heat sink. I did also touch the heat sink to make sure the numbers were right and it was hot as hell to the hand thermometer. Case cooling is not the issue, I opened the case and pointed a coolermaster 12cm fan right at it and it dropped the temp by a whole degree. Also, this case, fans, and PSU ran the previous Athlon 2 XII 245 without issue. Bios is reporting correct bus, multiplier and voltages everywhere. Motherboard, CPU, and RAM are all brand new. I do have another cooler (Logisys BETA 400 ST) that will be delivered tomorrow, but I feel as though the CPU should not be even close to this hot.

Should I RMA the CPU?


AMD A10-770k
ASRock FM2A78M-HD+
G.Skill Ripjaws X series 2x4 GB 2133
 
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cdrkf

cdrkf

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Mar 18, 2013
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That seams odd- I'm assuming you've installed the cooler that came with the 7700k (and not the old Athlon 2)?

A quick question- looking at the info for the motherboard on the ASRock website, it states that the 7700K is only support with a bios update, did you update the bios before installing the new cpu? If not I'd put the Athlon 2 back in and update it as running a cpu in a board that doesn't properly support it can have strange side effects like this...

Update: Link to the ASRock cpu support list- option to update bios is at the bottom of the page:
http://www.asrock.com/mb/AMD/FM2A78M-ITX+/?cat=CPU
 
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freakasis85

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Apr 3, 2014
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I did not update the bios, but I am running the cooler for the 7700. The Athlon is a different socket and will not work, however this bios will update from the internet without booting, so as long it doesn't take 10 mins, I should be able to update before it overheats. Will try this when I get home. Thanks. I can't believe that I didn't see that "since bios" on the site. I'll post back after update.
 
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cdrkf

cdrkf

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Mar 18, 2013
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Lol oops, yeah didn't notice that! I was thinking of the new FM2 Athlon chips like the 760K.

Agreed a nice after market cooler would be good- however I don't think the chip should heat up that much on idle even with the stock coolers (I know they're poor but they usually work at stock settings!).
 
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freakasis85

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Apr 3, 2014
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I have space constraints, that is why I ordered the smaller replacement heat sink. I will watch HD movies and do some video processing for streaming. May play a game here and there but not much, I generally use the PS3 for that ;-)
 
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freakasis85

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Apr 3, 2014
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The TX3 is way too tall. I have 3.5 in of clearance. The 400 ST I ordered has a 92mm fan, a copper base and 4 heat pipes. Is that not enough for a non-overclocked CPU? Also, there is not room for a 12cm fan. Case is Silverstone SG01
 
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freakasis85

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Apr 3, 2014
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The problem was 2 fold.

1) horrible AMD heatsink
2) sitting in UEFI is apparently running the CPU at 100%

After installing the new heatsink, Temps dropped, but still hung at 64 C. This number was at least reasonable, so I booted into live Linux to copy some of raid 0 off and the Temps in Linux were 2-3 C over room temp, even while copying 1TB and surfing. Checked by touching the heatsink because this seemed impossible and it was cool. I did update the UEFI to 1.5 before doing anything, that had no effect on Temps. The only thing I can conclude is that sitting in UEFI must be taxing as hell to the CPU for some reason.
 
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Xen0sys

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Apr 18, 2013
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For what its worth, I run 46C idle and 72C max load with a corsair closed loop H100i water cooler (I think that's the model) overclocked at 4.0Ghz. Still quite high even so. I think the chip is built to take temperatures into the typical GPU ranges (~75-80C). That being said, I can't find any official information regarding that claim.

I used HW Monitor to read the temperature.
 
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slyu9213

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Nov 30, 2012
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70C at idle seems too hot though. I have an 860K with a H100i and get 31C in the BIOS at a small OC to 4.2GHz. At 4.5GHz I get ~46C with 1.464v. These number as far from the BIOS screen. The numbers from other programs are a little different/higher for me.

Seeing that running APUs with H100i seem to have somewhat higher temps than expectations having higher temps with the stock cooler seems a bit normal. Also with the temp reading being a little inaccurate with recent AMD processors who knows if this is critical.
 
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