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Need to reset BIOS when switching CPU? (I5 4440)

astralwolf
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I'm upgrading my Pentium g3258 to an i5 4440 soon. It was over clocked and has a vcore of 1.25v. 

 

Do I need to reset the BIOS before I place the new CPU? More importantly, will the motherboard pick a suitable voltage for the i5 or will it stay at 1.25v?

 

P.S All vcores of each CPUs (even the same models) are different . Does the motherboard determine the default voltage? If so,how?

 

 

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I say it's good practice, but you don't have to since the BIOS will run over its setup.

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Before you put out that CPU, make sure you go to BIOS and put it to stock settings.

BIOS should recognise that you have changed CPU with not overclockable one, but you never know.

 

Just to be sure, reset BIOS settings :)

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it good practice to clear the CMOS of the old CPU settings

 

also if you are on RAID of any kind.

 

be sure to do a backup of the BIOS if you have the function to save previous settings.

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13 minutes ago, Simon771 said:

Before you put out that CPU, make sure you go to BIOS and put it to stock settings.

BIOS should recognise that you have changed CPU with not overclockable one, but you never know.

 

Just to be sure, reset BIOS settings :)

Right can I reset the BIOS settings by just setting it to factory defaults? Or do I need to remove the CMOS battery?

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1 minute ago, astralwolf said:

Right can I reset the BIOS settings by just setting it to factory defaults? Or do I need to remove the CMOS battery?

Factory defaults.

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CPU: Intel - Core i7-8700K

CPU Cooler: be quiet! - PURE ROCK 
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7 minutes ago, astralwolf said:

Right can I reset the BIOS settings by just setting it to factory defaults? Or do I need to remove the CMOS battery?

Either of that will be fine. As far as I know, both do exactly the same thing.

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I upgraded my I5 4430 to an I7 4970K last December. When swapping over I installed everything correctly but the PC would not boot to bios. I had updated my BIOS to the latest available but that didn't do the trick. This caused me quite a bit of trouble and asus support were no help. In the end I needed to updated the bios on the mobo using the asus bios update tool.

 

I would check if you need to do this before swapping out your CPU as swapping back and forth, reapplying thermal paste is a pain. 

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34 minutes ago, GonzoPoet said:

I upgraded my I5 4430 to an I7 4970K last December. When swapping over I installed everything correctly but the PC would not boot to bios. I had updated my BIOS to the latest available but that didn't do the trick. This caused me quite a bit of trouble and asus support were no help. In the end I needed to updated the bios on the mobo using the asus bios update tool.

 

I would check if you need to do this before swapping out your CPU as swapping back and forth, reapplying thermal paste is a pain. 

Yea it's supported don't worry

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3 hours ago, astralwolf said:

Do I need to reset the BIOS before I place the new CPU? More importantly, will the motherboard pick a suitable voltage for the i5 or will it stay at 1.25v?

If you have 1.25 V set as a manual voltage, my assumption is that it will apply that it to any CPU installed. If the voltage is set to Auto, it will probably detect the i5's factory vcore.

 

1.25 V isn't a particularly high voltage so it's not a great concern, but it probably doesn't need to be that high on a locked CPU. It would be a good idea to reset the BIOS (using the Load Factory Defaults option, or whatever it's called on your board) just to make sure everything is detected properly. There are a lot more CPU settings than just frequency and vcore that can be incorrect.

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5 hours ago, astralwolf said:

I'm upgrading my Pentium g3258 to an i5 4440 soon. It was over clocked and has a vcore of 1.25v. 

 

Do I need to reset the BIOS before I place the new CPU? More importantly, will the motherboard pick a suitable voltage for the i5 or will it stay at 1.25v?

 

P.S All vcores of each CPUs (even the same models) are different . Does the motherboard determine the default voltage? If so,how?

 

 

Yes reset Bios to default. then change the cpu. Then install the new one, boot up, open bios and set it like you want :)

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All right guys thx :D I'll make sure to do some before-after benchmarking too

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