90 degrees......Am I burning up????

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I am running a 3770K on a Asus P8Z77-V PRO with a Phanteks PH-TC14PE cooler. I ran the Asus AutoTune utility in Windows last night to OC my new CPU for the first time. It went up to 4.6, however, RealTemp GT showed one of the cores reaching 91c (the others were in the mid to high 80s) during the stability test that is part of the AutoTune utility. It reached this temp at load from about 4.5 onwards. This seems very high as peope are reporting stable at 4.6-4.7 with 70c at load.

I know that using a utility like this is not the best way to do it and that it tends to use higher voltages which are not great for the CPU. I will follow the guides on here later in the week and do it properly. Also, I read that different stress testing apps push the CPU to different temps at load. What is the best one to use?

Please advise on my why my temps were high last night.


PS> My cooler is mounted correctly and securely and thermal paste applied in a very small pea size in the centre of the CPU, paste not spread, cooler just appied on top and secured (not lifted off again after being pressed down). I'm using the Phantek paste, however, I also have a tube of MX-4. My case is a white Corsair 600T with all fans working perfectly.

Thanks.
 
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my guess is that it's over volting things slightly... a bit like if you OC from the bios and leave voltage on AUTO. can you see what voltage it's running at under load?

it also depends what stress test you are using as i was running 4.5GHz at 91 oC... but that was using intel burn test which adds about 10oC+ to temps over prime95... also other peoples temps could be on water cooling so they ofc will be lower.

also use cpu-z for voltage and core/real temp for the temperatures as the CPU temp on my z77 sabertooth was never right... think it was the socket temp rather than the actual chip :p as realtemp would read 80ish on prime and the thermal radar said the CPU was sub 60 :p
 
Depending on the gap in core temps it might also be worth considering re-seating the cooler as one core getting too hot might mean there's too much/not enough thermal compound on that part of the chip.
 
SirConfused said:
Depending on the gap in core temps it might also be worth considering re-seating the cooler as one core getting too hot might mean there's too much/not enough thermal compound on that part of the chip.
Click to expand...

Not necessary, due to the layout of the cores on the die, some cores will be slighty further away from the temp diode hence the difference. ;)
 
Cool Breeze said:
Not necessary, due to the layout of the cores on the die, some cores will be slighty further away from the temp diode hence the difference. ;)
Click to expand...

Fair enough. In which case, cpuz and coretemp are a good combination. Get to the clock you want and slowly drop the voltage until it's cool enough or it stops being stable.
 
Just noted that you have a tube of MX-4 yet your using the Phanteks stuff..... I'd use the MX-4 over anything else TBH.

Also the correct application method for Ivy Bridge is a thin vertical line down the IHS. Check out Arctic Silvers Web site and look at all the different application types for the different cores etc. I know it's for AS 5 Application but I can't see why you'd apply any TIM any differently, you need the best coverage of die area on the IHS with the pea method you could be missing the corners of the die if you are to conservative.

This pea in the middle was devised for single core cpu's IIRC.

I realise this is in contradiction to what I posted earlier but is sound advice. The core variant temps is what I was getting at mostly.
 
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Guys, just thought I would ask what kind of settings I should use for a stable 4.4 or 4.5 on my 3770K? I don't really want anything higher. I'm reading about all the OC parameters now and it seems quite complicated.

Also, what would it take to damage my CPU, just so I know what I should avoid for sure.

Thanks.
 
I can't comment on the 3770k but my 3570k needs 1.23 ish for 4.4 IBT and Prime AVX stable. I have used ofset of 0.030 in the Bios so that on idle it drops, you can use fixed but you will be at that voltage even when idle fixed is usually good for when you are trying for a higher OC and vdroop cause's issues with your idle and load stability.

From what I have read the 3770k can do 4.4/4.5 on less volts than a 3570k can so it's a matter of trial end error, don't be afraid of the odd BSOD or reboot.

keep your temps under 80 deg c while stress testing (real life usage will be atleast 10 deg lower under load)

keep you voltage below 1.3v for your clock speed you should hit 4.4 / 4.5 around or below 1.25 v anyhow.

IIRC Ivybridge has a max v rating of 1.52v and a recommended max of 1.45 you'll get now where near these without some dry ice or LN2.
 
Guys, I'm at 4.4 on 1.145v (CPU-Z shows the voltage between 1.168 and 1.176). I've been running a blend test in Prime95 for the last 40mins or so. Temps are between 64-70c. How does this sound? I've not changed any other settings from BIOS default. The BCLK is 100.5 at default, is this right?

I'm using the Asus TurboV EVO app to make the changes rather than through the BIOS directly, however this does make the changes in the BIOS.

What do I need to set in order to have 'voltage on demand', i.e. not having it run at 1.145 all the time?

Thank you

PS, this is on my new 3770K build, not my sig rig, need to update it :)
 
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Your temps are fine, esspecially if you have hyperthreading enabled.

To set your voltage to drop when idle you need to use offset voltage not fixed, this will be in the bios go and take a look. Software changes are good to get a quick change tested but you should set those settings in the bios if stable. BCLK should be 100.00 but if your bios sets it too 100.05 it won't hurt anything.. think mine is 100.28 as it droops to 99.99 at 100 and I don't get a nice round number.
 
Thank you, yes, I have HT enabled as it helps me with simulations. I also noticed that one of the settings is 'CPU PLL Voltage', this is on 1.80000 by default. Is that setting ok?

I will have a read up on offsets and then have a go at that. Once I have a stable 4.4 with offsets working I will reset the BIOS and then make the changes in there directly.

I can now see that it is much better to OC manually. That AutoTune took me to 4.6 when I tried it on Sunday but gave me 91c at load in 1 core and high 80's in the others. I only had it running the stress test for about 1min before I stopped it. Voltage was 1.35. Would this have harmed my new CPU? Not going to touch that AutoTune software again. Also, would 4.4 with the above voltage/temps be safe for my CPU in the long term. As you can see from my sig rig I don't upgrade that often so want to take care of my CPU.

Thanks CB

NB: SigRig updated. Thank you for 5yrs solid service Q6600 :)
 
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My 3770k is 100% stable at 4.5Ghz at 1.25V (my day to day clock) in IBT/prime I hit mid 80s low 90s with HT on (nothing to worry about imo) I also probably have one of the hottest IB chips on the forums.
 
Reaper123 said:
Not too sure about that, read this
http://www.hardwaresecrets.com/article/What-is-the-Best-Way-to-Apply-Thermal-Grease-Part-1/1303/1
Its for first generation i7 so it should still be valid
Click to expand...

Prooves nothing apart from its how you apply the TIM, my vertical line method is one thin line much akin to the lines in the two line method, certainly not that ham fisted thick line that article shows. But yes if you get it right a smallish dot can get a good spread.

How ever the TIM manufacturers know how the dies on the CPUs are orientated etc, and for AS 5 any way I'll follow their lead.
 
One of the best ways to apply TIM is the dot method 5.5mm dot of TIM slap bang in the middle heatsink goes on and the TIM is spread across the entire IHS nice and evenly.
 
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