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UlwanMokhtar
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Posts: 12
Registered: ‎08-31-2019
Location: MY
Views: 464
Message 1 of 5

Lenovo Y540 After BIOS Update - RAM Frequency from 2666mhz turn to 2400mhz ?

After updating to the latest BIOS BHCN31WW for my Lenovo Y540, I've noticed that my RAM Frequency has dropped from 2666mhz to 2400mhz.

As I remembered correctly, before the latest BIOS mine was running at 2666mhz.

Is this some kind of bug / glitch ? If it does then Lenovo needs to act fast.

Capture4.JPGTask Manager at 2400mhz

 Capture.JPGDRAM at 2400mhz ?

 

Capture2.JPGMicron 8gb 2666mhz

 

Capture3.JPGKingston 8gb 2666mhz

 

Capture5.JPGLatest BIOS + Lenovo Vantage

 

Guru
Posts: 3,461
Registered: ‎04-02-2014
Location: MX
Views: 425
Message 2 of 5

Re: Lenovo Y540 After BIOS Update - RAM Frequency from 2666mhz turn to 2400mhz ?

It looks like either you or the seller has added 2 different RAMs in the system. When this happens, there is little guarantee that both will work at the regular speeds and usually they revert to the base clock supported by the laptop ie 2400MHz.

You could try checking in the BIOS if there is an XMP profile enabler and change that setting, but other than that there is not much you can do about it now.

 

Just another note, you'll not see any performance difference between 2400MHz and 2666 Mhz in daily activities.

---------------------------------
Current System - Lenovo Y720
Y720 REVIEW - Youtube Link (Opens in New Tab)
If your experience was good today, please feel free to give KUDOS. It Ain't Over, 'til it's over.
UlwanMokhtar
Fanfold Paper
Posts: 12
Registered: ‎08-31-2019
Location: MY
Views: 421
Message 3 of 5

Re: Lenovo Y540 After BIOS Update - RAM Frequency from 2666mhz turn to 2400mhz ?

The ones I got from stock is Micron 8gb which haa different RAM Timing and only JEDEC Memory no XMP.

 

I added Kingston HyperX 8gb but with a different RAM Timing and has support for XMP.

 

I recently ordered one more HyperX 8gb and decided to sell the Micron. I will update later.

 

Does it have impacts for Video Editing when using higher mhz on RAM ?

Guru
Posts: 3,461
Registered: ‎04-02-2014
Location: MX
Views: 419
Message 4 of 5

Re: Lenovo Y540 After BIOS Update - RAM Frequency from 2666mhz turn to 2400mhz ?

Not much to be honest.

Video editing is mostly affected by your CPU and in part GPU. Most video editing softwares depend on a really good CPU to maximize performance.

---------------------------------
Current System - Lenovo Y720
Y720 REVIEW - Youtube Link (Opens in New Tab)
If your experience was good today, please feel free to give KUDOS. It Ain't Over, 'til it's over.
UlwanMokhtar
Fanfold Paper
Posts: 12
Registered: ‎08-31-2019
Location: MY
Views: 347
Message 5 of 5

Re: Lenovo Y540 After BIOS Update - RAM Frequency from 2666mhz turn to 2400mhz ?

Updated; I've bought the same Kingston HyperX Impact 8gb 2666mhz and there, Y540 now runs at 2666mhz.

I learned my lesson. Should be upgrading the same model which is Micron in the first place.

 

Kingston HyperX 8gb X 2 slot.JPGRAM now runs at 2666mhz

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