[SOLVED] i5-4570, can a LOCKED CPU be UNDERVOLTED in BIOS?

[weatherphobia]

I have tried to drop the voltage, the Vcore inside BIOS, several times and it either crashes the boot or crashes Windows 10.

I used very modest voltage drops. Even dropping as little as 0.02 Volts on Vcore within 10 minutes would cause a crash in Windows.

So can this cpu be UNDERvolted to reduce the CPU high temps at all?

BTW I am using MOBO ASUS Maximus VII hero Z97 chipset.

THANK YOU!

p.s. The number of options in the BIOS is amazing and almost too much IMHO.

 

[JaSoN_cRuZe]

You can try to undervolt any chip with the right motherboard but it depends on the processor to be able to stay stable at the given voltage.

If it is not stable then it means your processor cannot be undervolted.

 

[boju]

Get a better cooler or lower maximum processor state in Windows power plans to reduce turbo. No good force undervolting if turbo is enabled, you'll just run into problems as you're having.

 

[geofelt]

If you lower the vcore, you probably also need to reduce performance by reducing the multiplier.
Probably not what you want to do.

Heat should not be an issue at stock specs.
What is your cooler and case?
If you are using the stock Intel pushpin cooler, your cooler may not be installed well.

----------------how to mount the stock Intel cooler--------------

The stock Intel cooler can be tricky to install.
A poor installation will result in higher cpu temperatures.
If properly mounted, you should expect temperatures at idle to be 10-15c. over ambient.

To mount the Intel stock cooler properly, place the motherboard on top of the foam or cardboard backing that was packed with the motherboard.
The stock cooler will come with paste pre applied, it looks like three grey strips.
The 4 push pins should come in the proper position for installation, that is with the pins rotated in the opposite direction of the arrow,(clockwise)
and pulled up as far as they can go.
Take the time to play with the pushpin mechanism until you know how they work.

Orient the 4 pins so that they are exactly over the motherboard holes.
If one is out of place, you will damage the pins which are delicate.
Push down on a DIAGONAL pair of pins at the same time. Then the other pair.

When you push down on the top black pins, it expands the white plastic pins to fix the cooler in place.

If you do them one at a time, you will not get the cooler on straight.
Lastly, look at the back of the motherboard to verify that all 4 pins are equally through the motherboard, and that the cooler is on firmly.
This last step must be done, which is why the motherboard should be out of the case to do the job. Or you need a case with a opening that lets you see the pins.
It is possible to mount the cooler with the motherboard mounted in the case, but you can then never be certain that the push pins are inserted properly
unless you can verify that the pins are through the motherboard and locked.

If you should need to remove the cooler, turn the pins counter clockwise to unlock them.
You will need to clean off the old paste and reapply new if you ever take the cooler off.
Clean off old paste with alcohol and a lint free paper like a coffee filter.
Apply new paste sparingly. A small rice sized drop in the center will spread our under heat and pressure.
Too much paste is bad, it will act as an insulator.
It is hard to use too little.

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[Veloci]

You may want to try either ThrottleStop or Intel XTU Utility.

I've an old Dell Optiplex 755 at home. Its BIOS doesn't allow any sort of V-Core voltage manipulation. But with ThrottleStop; I managed to (Enormously) undervolt my E8400 by 150mV! Before, the CPU was hitting 80c at max load, but now it stays around 60c.

What a difference!