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How safe is it to use an oc cpu that overheats under prime??

post #1 of 30
Thread Starter 
OK so I do a lot of 3d rendering.
and cpu speed helps a lot.

right now I have a 3570k at 4.2ghz. and it's fine at that setting.
but i want to run at least 4.5.

only problem is that under prime testing it over heats and gets up around 100deg.

My question is this: If it only overheats under prime, and always stays cool when i'm rendering,
should it be safe to use?
post #2 of 30
Quote:
Originally Posted by tad2 View Post

OK so I do a lot of 3d rendering.
and cpu speed helps a lot.

right now I have a 3570k at 4.2ghz. and it's fine at that setting.
but i want to run at least 4.5.

only problem is that under prime testing it over heats and gets up around 100deg.

My question is this: If it only overheats under prime, and always stays cool when i'm rendering,
should it be safe to use?

Should be fine. You could try to delid the CPU. How much Volts are you using and what cooler.
Ishimura
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Silent Knight
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Ishimura
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Silent Knight
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post #3 of 30
Thread Starter 
nice! that's good news.
yeah I was thinking about delidding.
could get one of those 3dprinted delidders off ebay for 30bucks or so... or just try the razor blade (looks hard tho).

I use a big air cooler.
forget the name of the brand but it's a huge one with black thermal paint and dual fans.
pretty sure it's top of the line for air.

the problem is that I get errors/crashes when I try to lower volts.
I think I'm at like 1.45-1.5 v range.
post #4 of 30
Quote:
Originally Posted by tad2 View Post

OK so I do a lot of 3d rendering.
and cpu speed helps a lot.

right now I have a 3570k at 4.2ghz. and it's fine at that setting.
but i want to run at least 4.5.

only problem is that under prime testing it over heats and gets up around 100deg.

My question is this: If it only overheats under prime, and always stays cool when i'm rendering,
should it be safe to use?
As long as the temps are good when rendering you have no problem. How long does it take to reach maximum temp when rendering? It should peak in 2-5 minutes. If it takes longer it is probably because your case is not flowing cool air to cooler intake and not removing heated cooler exhaust. "Ways to Better Cooling" link in my sig might be of interest. 1st post is index, click on topic to read it. 5th is a good place to start.
post #5 of 30
Thread Starter 
That is wonderful news!
i just tested it for about 8min render time full render. and it maxed at about 91c.
which is well below the limit for that cpu I believe.
no errors in prime either. although it does hit a max of 104c ... :\ 4.44ghz
post #6 of 30
91c is too hot! .. about 15-20c. too hot.
Your CPU is throttling trying to keep temps down at 100c to 105c, but most people consider 80c to be maximum safe operating temp.
I asked you what your air temps are,but you seem to have ignored me. Not answering my questions means I will stop answering you. wink.gif.
post #7 of 30
240MHz is really worth this? You need way more voltage than is safe with a 3570K to get it to this speed, and are cooking the CPU. For 240MHz....that will not even be noticeable in real world usage.... doh.gif
post #8 of 30
Thread Starter 
Quote:
Originally Posted by doyll View Post

I asked you what your air temps are,but you seem to have ignored me. Not answering my questions means I will stop answering you. wink.gif.

Hmmmm I don't see that question anywhere.
post #9 of 30
Thread Starter 
Quote:
Originally Posted by doyll View Post

91c is too hot! .. about 15-20c. too hot.
Your CPU is throttling trying to keep temps down at 100c to 105c, but most people consider 80c to be maximum safe operating temp.
I asked you what your air temps are,but you seem to have ignored me. Not answering my questions means I will stop answering you. wink.gif.
Quote:
Originally Posted by ciarlatano View Post

240MHz is really worth this? You need way more voltage than is safe with a 3570K to get it to this speed, and are cooking the CPU. For 240MHz....that will not even be noticeable in real world usage.... doh.gif

Good point.
i'll tone it down thumb.gif
post #10 of 30
You are using too much voltage.
Ishimura
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Silent Knight
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CPUMotherboardGraphicsRAM
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Hard DriveHard DriveHard DriveCooling
OCZ Agility 3 60GB WD Caviar Green 1.5TB 2 x Seagate Barracuda 2TB XSPC Raystorm 
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Ishimura
(20 items)
 
Silent Knight
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CPUMotherboardGraphicsRAM
Intel Core i7 3770K @ 4.6GHz ASRock Z77E-ITX GeForce GTX 1080 Founders Edition AMD Radeon R9 16GB DDR3-2400MHz  
Hard DriveHard DriveCoolingCooling
SanDisk Ultra II 960GB Toshiba X300 5TB Corsair H100i GTX 3x GentleTyphoon AP-15 
OSMonitorKeyboardPower
Windows 10 Pro 64-Bit Philips Brilliance BDM4065UC 4K Razer BlackWidow Chroma  eVGA SuperNOVA 750 G3 
CaseMouseMouse PadAudio
Define Nano S Logitech G502 Proteus Core PECHAM Gaming Mouse Pad XX-Large Audioengine D1 DAC 
AudioAudioAudioAudio
Logitech Z-2300 Audio-Technica ATH-M50 Sennheiser HD 598 Sony XB950BT 
CPUMotherboardGraphicsRAM
AMD Phenom II X4 955 @ 4.2GHz ASUS M4A79XTD EVO AMD Radeon HD 7970 3GB @ 1200/1500 2x 4GB G.SKILL Ripjaws X DDR3-1600 
Hard DriveHard DriveHard DriveCooling
OCZ Agility 3 60GB WD Caviar Green 1.5TB 2 x Seagate Barracuda 2TB XSPC Raystorm 
CoolingCoolingOSPower
EK-FC7970 XSPC RS360 Windows 10 Pro 64-Bit Corsair TX750 
Case
NZXT Switch 810  
  hide details  
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