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Needing help determining if Temps are safe

post #1 of 11
Thread Starter 
Hello all.

I am running an intel i7 3770k oc'd to 4.5GHz. My cooler is a Scythe Ninja Rev.3 heatsink configured to only push as of right now. My MOBO is a GIGABYTE Z77X-UD5H socket 1155. I have my Vcore voltages set to 1.3 but at full load on prime95 CPU-Z is saying it is running at 1.284V. After running for about 10 minutes I am getting temps around 76-80 throughout all cores. I do have hyperthreading enabled and stressing all 8 threads. I did not run into any stability issues or errors so I do believe this voltage is safe, I may try lowering it just a weee bit more to see how low I can get.

Are these temps normal with what I am running, seeing that I am only configured to push and not push/pull? I did hook up an extra 120mm fan I had to configure push/pull but the difference was not worth keeping it there. I currently use that fan to sit below my GTX 670 FTW to blow cool air into it from the side fan and it makes such a huge difference to my card compared to what it does to my cpu being hooked up to my heatsink.

If i were to maybe lower my OC to 4.3 and lower the voltages a bit more would that make much of a difference? And what type of performance decrease would I be likely to see?
post #2 of 11
Thread Starter 
I also just ran the intel burn test and that test got my temps way higher. They were getting close to 90 on the standard level test. I am not feeling very comfortable at all with such low voltages and such high temps. They should not be that high, I at least I do not think so.
post #3 of 11
What I would do is try lowering your vcore. My chip ran 4.8@1.33. Keep going down until with vcore till either windows wont boot or prime95 crashes within ten minutes then go back up. Also, PLL really affects heat on my board/chip. At 4.5 you should be stable with a max PLL of 1.745. If you are set to auto or 1.845 change it to 1.745. If that is stable try lower. Hope this helps.

EDIT: Don't stress, those temps are "safe"
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post #4 of 11
Thread Starter 
thank I will definitely check what my PLL is and lower it if possible. Right now I lowered the Voltages down to 1.28 and running prime 95 with no issues so far. I will keep lowering until I crash. I am trying to get it into the high 60's low 70's at least and keep the 4.5 clock speed. Hopefully this will help.
post #5 of 11
Now you got the idea. You want to be just above not stable, but fully stable, that way you know you are providing the lowest volts possible and therefor less heat. You may not reach my numbers, I have a decent chip, but I could pass IBT (10pass) with 4.5 @ 1.15, but crashed at 1.125.
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i5 3570K Delidded @ 5.0Ghz Gigabyte Z77-HD3 HD 6950 Kingston Hyper X - 8Gb 
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post #6 of 11
Thread Starter 
Ok one more question. In my BIOS I have found the CPU PLL voltage but it is set to auto and I cannot touch it. When I go into the 3d mode where I can interactively change everything it does not show PLL only the other voltages like Vcore and so on, the basic voltages. I am not sure how to unlock this to where I can lower it. It is set to 1.8 default and I am sure I can lower that to around 1.6 from what I have read around about.

Edit--
nevermind i figured out how to do it. i had to use the num pad + symbol to change it not enter. as of right now I have the temps that I was wanting. I lowered the PLL to 1.6 and and getting the high 60's low 70' that i desired. thank you for the awesome tips. Didnt have a clue what that was until you told me lol.
Edited by vaze159 - 3/30/13 at 1:24pm
post #7 of 11
I have a Gigabyte board too. Go into the "advanced" and not the 3d section. Then "highlight" CPU PLL and just type in 1.745 or whatever and hit enter.
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Hard DriveOSPowerCase
Crucial M4 - 128GB Windows 7 64bit Premium CoolerMaster 1000w SilentPro Phantom - White and Red 
CPUMotherboardGraphicsRAM
i5 3570K Delidded @ 5.0Ghz Gigabyte Z77-HD3 HD 6950 Kingston Hyper X - 8Gb 
Hard DriveHard DriveCoolingOS
SSD - 120GB Samsung 840 HDD - 1T Caviar Black Corsair H100i Windows 7 64bit Premium 
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post #8 of 11
Thread Starter 
So my last question is. Does lowering these voltages affect performance at all? It makes me wonder that with less voltages running through the system things would tend to not respond as fast as they should. I am stable as of right now going on 8 passes of blend in prime with 1.275Vcore and 1.6V CPU PLL.
post #9 of 11
Good for you, getting better! Answer to your question: NO. Absolutely not.

What you can do now that you are at 1.6 PLL is when you know you are real close to stable but it is failing, bump up your PLL a bit and retest. I'll often find a clock/volt ratio that is super close to being stable (like a 8hrs prime crash), that will be stable with more PLL.

Glad I could help!
White Phantom
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CPUMotherboardGraphicsRAM
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Hard DriveOSPowerCase
Crucial M4 - 128GB Windows 7 64bit Premium CoolerMaster 1000w SilentPro Phantom - White and Red 
CPUMotherboardGraphicsRAM
i5 3570K Delidded @ 5.0Ghz Gigabyte Z77-HD3 HD 6950 Kingston Hyper X - 8Gb 
Hard DriveHard DriveCoolingOS
SSD - 120GB Samsung 840 HDD - 1T Caviar Black Corsair H100i Windows 7 64bit Premium 
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Thermaltake 630w Coller Master HAF 922 
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White Phantom
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CPUMotherboardGraphicsRAM
i7 2600K @ 4.7GHz ASUS Maximus IV Extreme-Z Radeon HD6950 X2 CrossFireX 8GB DDR3 Corsair Vengence 
Hard DriveOSPowerCase
Crucial M4 - 128GB Windows 7 64bit Premium CoolerMaster 1000w SilentPro Phantom - White and Red 
CPUMotherboardGraphicsRAM
i5 3570K Delidded @ 5.0Ghz Gigabyte Z77-HD3 HD 6950 Kingston Hyper X - 8Gb 
Hard DriveHard DriveCoolingOS
SSD - 120GB Samsung 840 HDD - 1T Caviar Black Corsair H100i Windows 7 64bit Premium 
PowerCase
Thermaltake 630w Coller Master HAF 922 
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post #10 of 11
Curious as to what your temps are now going from 1.3 and auto PLL down to 1.275 and 1.6pll?
White Phantom
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CPUMotherboardGraphicsRAM
i7 2600K @ 4.7GHz ASUS Maximus IV Extreme-Z Radeon HD6950 X2 CrossFireX 8GB DDR3 Corsair Vengence 
Hard DriveOSPowerCase
Crucial M4 - 128GB Windows 7 64bit Premium CoolerMaster 1000w SilentPro Phantom - White and Red 
CPUMotherboardGraphicsRAM
i5 3570K Delidded @ 5.0Ghz Gigabyte Z77-HD3 HD 6950 Kingston Hyper X - 8Gb 
Hard DriveHard DriveCoolingOS
SSD - 120GB Samsung 840 HDD - 1T Caviar Black Corsair H100i Windows 7 64bit Premium 
PowerCase
Thermaltake 630w Coller Master HAF 922 
  hide details  
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White Phantom
(13 items)
 
5.0Ghz Ivy
(10 items)
 
 
CPUMotherboardGraphicsRAM
i7 2600K @ 4.7GHz ASUS Maximus IV Extreme-Z Radeon HD6950 X2 CrossFireX 8GB DDR3 Corsair Vengence 
Hard DriveOSPowerCase
Crucial M4 - 128GB Windows 7 64bit Premium CoolerMaster 1000w SilentPro Phantom - White and Red 
CPUMotherboardGraphicsRAM
i5 3570K Delidded @ 5.0Ghz Gigabyte Z77-HD3 HD 6950 Kingston Hyper X - 8Gb 
Hard DriveHard DriveCoolingOS
SSD - 120GB Samsung 840 HDD - 1T Caviar Black Corsair H100i Windows 7 64bit Premium 
PowerCase
Thermaltake 630w Coller Master HAF 922 
  hide details  
Reply
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