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UlwanMokhtar
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Posts: 12
Registered: ‎08-31-2019
Location: MY
Views: 282
Message 1 of 4

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.

Capture.JPGDRAM at 2400mhz ?Capture2.JPGMicron 8gb 2666mhzCapture3.JPGKingston 8gb 2666mhzCapture4.JPGTask Managet at 2400mhz ?Capture5.JPGLatest Lenovo Vantage + Bios

 

 

UlwanMokhtar
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Posts: 12
Registered: ‎08-31-2019
Location: MY
Views: 274
Message 2 of 4

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

[UPDATE]

It appears that having slot in single Micron 8gb or Kingston 8gb will make the laptop runs at 2666mhz.

 

But when I put it both together again, it runs on 2400mhz.

Is it a bug? Or is it because of the different specs / timing / frequency ?

Single Micron 8gb.JPGSingle RAM will detect at 2666mhz

 

 

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Posts: 950
Registered: ‎05-01-2012
Location: IL
Views: 253
Message 3 of 4

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

One of your RAM stcks is 2400mhz so the system lower both to 2400.

UlwanMokhtar
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Posts: 12
Registered: ‎08-31-2019
Location: MY
Views: 240
Message 4 of 4

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

Clearly from CPU Z shows that both RAM is 2666mhz bro. Only different TIMINGS.

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