Overclocking, XMP changed CPU strap and BCLK to 125, should I change them back to 100?

[DatPei]

Hi, i have a question about setting baseclock. Here is my current situation, i'm trying to overclock, and the ram i'm using is Corsair Vengeance that runs at 3000MHz. Following this tutorial by Linus, once i have enabled XMP in BIOS, the CPU strap and BCLK is changed to 125 mhz automatically (same as what happened in the video); but then what confuses me is at timestamp 10:11, the next glimpse of his BIOS is now showing the CPU strap and BCLK at 100 mhz. So am I supposed to turn on XMP, and then adjust the CPU strap and BCLK (from 125) back to 100?

[TempestCatto]

When the vid shows it back at 100mhz I bet it was shot before he did the OC, and they edited it in that way so the information flow of the video would be smooth (just a guess).

If you don't have any issues with temps or stability, I would not worry about it.

[DatPei]

15 minutes ago, TempestCatto said:

When the vid shows it back at 100mhz I bet it was shot before he did the OC, and they edited it in that way so the information flow of the video would be smooth (just a guess).

If you don't have any issues with temps or stability, I would not worry about it.

Umh okay, i will give it a test tomorrow. One thing i heard about setting 125 baseclock is that you lose the ability for adaptive voltage, so it sounds like the voltage will be fixed to 1.3V (or whichever it is for stability, i haven't got to that step yet), so that sounds like unnecessary when the computer is in idle with the power draw. Can this be compensated by setting a "Minimum processor state" in Power Option though? Because if you can, then it's not really an issue.

[DatPei]

Can someone else confirm this please, or suggest whether to turn the BCLK to 100 or leave it at 125?

[TempestCatto]

19 hours ago, DatPei said:

Umh okay, i will give it a test tomorrow. One thing i heard about setting 125 baseclock is that you lose the ability for adaptive voltage, so it sounds like the voltage will be fixed to 1.3V (or whichever it is for stability, i haven't got to that step yet), so that sounds like unnecessary when the computer is in idle with the power draw. Can this be compensated by setting a "Minimum processor state" in Power Option though? Because if you can, then it's not really an issue.

I dont think it is unnecessary power draw. You will notice no difference either way.

Have you tried the minimum processor state?

Honestly if it's stable, it's fine.

[DatPei]

1 hour ago, TempestCatto said:

I dont think it is unnecessary power draw. You will notice no difference either way.

Have you tried the minimum processor state?

Honestly if it's stable, it's fine.

Alright I still haven't tested it today, I will boot it tomorrow and check and come back to you. Also what I meant with unnecessary power draw was regarding energy saving when i'm not using software or gaming, the cores shouldn't be running at 4.5 Ghz (thus less power draw) when you do simple email checking or surfing, is what i meant.

[TempestCatto]

9 minutes ago, DatPei said:

the cores shouldn't be running at 4.5 Ghz (thus less power draw) when you do simple email checking or surfing, is what i meant.

Understood. Though I don't personally think you'll save that much more per year on your energy bill. But if you're living paycheck to paycheck, that's understandable.

[Zando_]

I run a 5820K. Enabled XMP > manually set RAM voltage to 1.35v (it defaults to 1.375 for some reason) > set BLCK back to 100Mhz > put in my OC voltages (I use variable with a +320, so 1.32v) and multis, then slapped that save and exit button. IDK why it sets the BLCK up, I've always just ran it at 100 with no issues and the RAM runs at the rated XMP speeds (3200Mhz CL16 for my kit).