Go Back   AnandTech Forums > Hardware and Technology > CPUs and Overclocking

Forums
· Hardware and Technology
· CPUs and Overclocking
· Motherboards
· Video Cards and Graphics
· Memory and Storage
· Power Supplies
· Cases & Cooling
· SFF, Notebooks, Pre-Built/Barebones PCs
· Networking
· Peripherals
· General Hardware
· Highly Technical
· Computer Help
· Home Theater PCs
· Consumer Electronics
· Digital and Video Cameras
· Mobile Devices & Gadgets
· Audio/Video & Home Theater
· Software
· Software for Windows
· All Things Apple
· *nix Software
· Operating Systems
· Programming
· PC Gaming
· Console Gaming
· Distributed Computing
· Security
· Social
· Off Topic
· Politics and News
· Discussion Club
· Love and Relationships
· The Garage
· Health and Fitness
· Home and Garden
· Merchandise and Shopping
· For Sale/Trade
· Hot Deals with Free Stuff/Contests
· Black Friday 2014
· Forum Issues
· Technical Forum Issues
· Personal Forum Issues
· Suggestion Box
· Moderator Resources
· Moderator Discussions
   

Reply
 
Thread Tools
Old 06-05-2013, 04:21 PM   #1
Dankk
Diamond Member
 
Dankk's Avatar
 
Join Date: Jul 2008
Location: Mormonville, Utah
Posts: 5,250
Default What is the maximum safe temperature for an FX-8350 under load?

Yeah, I know. This is another one of those "is x degrees safe for this processor?" kind of threads.

I just want to be sure though. I have an FX-8350, air cooled with a Hyper 212 EVO, with the voltage bumped up a tiny bit so it can run at 4.4GHz. Nothing too fancy, right? Running OCCT:CPU heats up the core temperatures to around 62 degrees after a few minutes (probably 65 max after an extended length of time).

How does that fare for an FX-8350? I'm talking strictly load temps. Idle temps are perfectly fine, especially with "Cool and Quiet" turned on. (HWiNFO64 reports core temperatures of around 20 degrees idle, which sounds silly; but the socket temperature reads around 35, which seems more accurate).

Side note: The core temperature sensor looks silly on idle, but when the CPU is under load, the core and socket temperatures more closely resemble one another.

So anyway, I've googled "FX-8350 safe temperature" and I'm hearing a mix of things. Some people say 62 C is the maximum safe value for these chips (which makes me nervous). Some say 70. OCCT tells me it's 80 for some reason. (Some weirdos say anything below 90 is fine, but of course that's not true.)

So what is it? I've experienced absolutely no stability problems with my current overclock (which, again, is 4.4Ghz). I've managed to push it up to 4.6GHz, but the additional voltage bump introduces too much heat. Under OCCT, the core temps reached 70 degrees, and my PC promptly shut down. I think my motherboard has an auto-shutdown trigger at 70 degrees.

What do you guys think? Just wondering if my CPU is safe at 65 degrees max (and that's only in torture tests; in real-world applications it's lower.) Specs are in my sig.
__________________
AMD FX-8350 4.2GHz | HIS Radeon iPower IceQ X R9 290X
MSI 990FXA-GD80 (V2) | G.SKILL Ripjaws X Series 16GB DDR3 1600
Kingston HyperX 120GB SSD | Toshiba DT01ACA200 2TB HD
SeaSonic M12II Bronze 620W PSU

Steam

Last edited by Dankk; 06-05-2013 at 04:23 PM.
Dankk is offline   Reply With Quote
Old 06-05-2013, 04:26 PM   #2
Idontcare
Administrator
Elite Member
 
Idontcare's Avatar
 
Join Date: Oct 1999
Location: 台北市
Posts: 20,512
Default

Ask AMD, they would be the only people who know the answer. Everything else is just people taking guesses. If you get an answer please let us know!
Idontcare is offline   Reply With Quote
Old 06-05-2013, 04:39 PM   #3
Dankk
Diamond Member
 
Dankk's Avatar
 
Join Date: Jul 2008
Location: Mormonville, Utah
Posts: 5,250
Default

Quote:
Originally Posted by Idontcare View Post
Ask AMD, they would be the only people who know the answer. Everything else is just people taking guesses. If you get an answer please let us know!
I suppose this may be one of those questions with no real answer. "Depends on the situation, depends on the setup, different chips have different thresholds," etc, etc. I'm the type of person who finds comfort in having straight answers though.

The "Max Temps" on AMD's spec sheet is frustratingly left blank.
__________________
AMD FX-8350 4.2GHz | HIS Radeon iPower IceQ X R9 290X
MSI 990FXA-GD80 (V2) | G.SKILL Ripjaws X Series 16GB DDR3 1600
Kingston HyperX 120GB SSD | Toshiba DT01ACA200 2TB HD
SeaSonic M12II Bronze 620W PSU

Steam
Dankk is offline   Reply With Quote
Old 06-05-2013, 05:37 PM   #4
thilanliyan
Diamond Member
 
Join Date: Jun 2005
Posts: 8,170
Default

I try to keep my FX6100 under 70C. If the CPU can't even take 70C...well let it burn then lol

I thought I read somewhere when Bulldozer was initially released that 75C was max for the 95w chips and 65C was max for the 125w chips, but don't quote me on it.
__________________
Intel 4670k
Asus Z87-Expert
8GB Kingston HyperX DDR3-1600
3x7950 3gb (mining)
Corsair HX1050 Gold
thilanliyan is offline   Reply With Quote
Old 06-05-2013, 09:12 PM   #5
grimpr
Senior Member
 
Join Date: Aug 2007
Posts: 989
Default

70c, above it starts to throttle and eventually shutdown. You need a highend cooler to stay cool below 70c and go to 4.6ghz and beyond.
grimpr is offline   Reply With Quote
Old 06-05-2013, 09:16 PM   #6
Durvelle27
Banned
 
Join Date: Jun 2012
Location: Memphis, TN
Posts: 4,102
Default

70C is the Max as after it will throttle

What voltage are you using because my FX 8320 @4.4GHz under full load barely breaks 55C and i use a Hyper 212+ Push/Pull
Durvelle27 is offline   Reply With Quote
Old 06-05-2013, 09:28 PM   #7
Idontcare
Administrator
Elite Member
 
Idontcare's Avatar
 
Join Date: Oct 1999
Location: 台北市
Posts: 20,512
Default

Quote:
Originally Posted by Durvelle27 View Post
70C is the Max as after it will throttle

What voltage are you using because my FX 8320 @4.4GHz under full load barely breaks 55C and i use a Hyper 212+ Push/Pull
Your 70C threshold experience is purely mobo dependent and has no bearing on AMD's specs or CPU designs.

For example, my FX-8350 goes all the way to 83C on an Asus CVFZ without any throttling whatsoever.

Is it safe to operate at 83C under full load? No one can say. Asus obviously feels it is ok. AMD isn't inclined to say it is not OK.

So who is to say?
Idontcare is offline   Reply With Quote
Old 06-05-2013, 11:20 PM   #8
bononos
Platinum Member
 
Join Date: Aug 2011
Posts: 2,575
Default

Is there something to be said about why AMD doesn't report actual temps from the thermal diode but gives some proprietary scale reading. Its mysterious enough to confound its partners and s/w developers since we've got spurious readings when idle.

And now it doesn't even want to list the max temps before the thermal protection trips.

Has AMD ever reported real temps ever since it embedded thermal diodes into its cpus?
bononos is offline   Reply With Quote
Reply

Tags
fx-8350 core temp, fx-8350 max temperature, fx-8350 temperature

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 02:14 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.