Question RAM frequency fluctuation

[Rui Neves]

Hi ,
Is normal to a computer with intel chipset the RAM frequency have higher or lower values according to CPU load ? I bought one intel Laptop today and I´ve not used an intel CPU for a long time ... I have been using always my desktop that always had an AMD CPU even after upgrading it recently I have sticked with AMD and on my desktop the RAM frequency is always the same , I am a bit outdated about intel "new" technologies sometimes , and I saw this scenario when I looked at CPU-Z for checking RAM frequency and I remembered to ask here about this .

LAPTOP MODEL

 

[boju]

Ram speed shouldn't change but cpu speed can depending on power plan and use. Are you sure you're looking at ram speed? Show us what you're seeing.

 

[Rui Neves]

Ram speed shouldn't change but cpu speed can depending on power plan and use. Are you sure you're looking at ram speed? Show us what you're seeing.

yes I was looking at ram speed . I left here two videos showing what I am seeing , the second video won´t let me insert as media so I left the link.

https://youtube.com/shorts/Jv7BvufxGXA?feature=share

 

[boju]

Asked for some help on the matter and it's normal. Something i hadn't noticed before.

Any idea why ram speed is changing here in cpuz? Something new, maybe sensor glitch?

https://forums.tomshardware.com/threads/ram-frequency-fluctuation.3782118/#post-22832539

Checked my RAM frequency from CPU-Z and it also changes around a bit. In ranges from: 1502.6 - 1504.4 Mhz, while PC is idling (when i type this).

Though, RAM frequency is never constant 2400/2666/3000, instead, it fluctuates around slightly at all times.

 

[Rui Neves]

Asked for some help on the matter and it's normal. Something i hadn't noticed before.

Asked for some help on the matter and it's normal. Something i hadn't noticed before.

Thanks ,so should be something new on Intel chipset

 

[SkyNetRising]

Is normal to a computer with intel chipset the RAM frequency have higher or lower values according to CPU load ?

I've seen similar behavior on laptops.
Never on desktops though.

 

[Eximo]

Clocking down under idle conditions is going to be a feature of DDR5, it may already apply to LPDDR4 and LPDDR5.

 

[falcon291]

As far as I get, the speed is constant, small fluctations are just a result of speed calculation. And if clocking down is a feature of DDR5, we will see it, but I don't think now it applies to DDR4 and will be applied in the future.

By the way my RAM speed also fluctuates between 1599.2 to 1600.4.

 

[Rui Neves]

I've seen similar behavior on laptops.
Never on desktops though.

Thanks , In this case is a laptop indeed . My desktop does not do that but is a different plataform too

 

[Rui Neves]

As far as I get, the speed is constant, small fluctations are just a result of speed calculation. And if clocking down is a feature of DDR5, we will see it, but I don't think now it applies to DDR4 and will be applied in the future.

By the way my RAM speed also fluctuates between 1599.2 to 1600.4.

And it's always calculating the ram speed ? sometimes it goes up to 300 mhz more like from 1000 to 1300mhz ....

 

[Rui Neves]

Clocking down under idle conditions is going to be a feature of DDR5, it may already apply to LPDDR4 and LPDDR5.

Thanks , so it applys to the type of ddr4 on this laptop ?

 

[Eximo]

Only if you see it clock down a significant number. Fluctuations in the base clock can account for small shifts of 1 or 2 MHz.

 

[Rui Neves]

Only if you see it clock down a significant number. Fluctuations in the base clock can account for small shifts of 1 or 2 MHz.

Sometimes it shows like 1060mhz and another time is already at 1300mhz ... Is possible to see that on 2nd video on HWinfo , the max was like 1333mhz and minimum was 1060 mhz +-

 

[Eximo]

Oh, then possibly yes. I hadn't watched the videos. Certainly would be a good idea to drop the voltage on RAM at idle on a laptop.

 

[Rui Neves]

Oh, then possibly yes. I hadn't watched the videos. Certainly would be a good idea to drop the voltage on RAM at idle on a laptop.

I think I have no option on bios to change timings or voltages on RAM

 

[Eximo]

The idea is it would do itself, when the fastest memory speed isn't needed it could reduce clocks and voltage, saving power. If you are observing it happening, it is likely a power saving feature of the laptop.

 

[falcon291]

And it's always calculating the ram speed ? sometimes it goes up to 300 mhz more like from 1000 to 1300mhz ....

Oh this is a lot. Something can be wrong about your mainboard. Do you have other problems?

 

[Rui Neves]

The idea is it would do itself, when the fastest memory speed isn't needed it could reduce clocks and voltage, saving power. If you are observing it happening, it is likely a power saving feature of the laptop.

Makes sense , thank you

 

[Rui Neves]

Oh this is a lot. Something can be wrong about your mainboard. Do you have other problems?

Nope , I dont have any issues at the moment