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3 Posts

08-03-2013

California

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T420s XMP profile?

2013-08-03, 1:48 AM

I was under the impression that the T420s has support for XMP profiles? Mine doesn't seem to work. I just got a 16GB kit of Crucial memory that should run at 1866MHz (model BLS2K8G3N18AES4). CPU-Z has it running at 1333. Is this not supposed to work? Do I need to downgrade the BIOS or something?

 

Even if XMP isn't supported, there is a JEDEC profile for 1600MHz; why isn't that working at least? Any ideas?

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7 Posts

06-27-2011

Canada

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Re: T420s XMP profile?

2013-08-04, 9:14 AM

as far as i know on my T420 with a new bios they forced defualt memory clock to 1333 no matter what ur memory JEDEC timing is.

 

Ull need downgrade the bios which one I forgot ull need google around for it.

 

As far as XMP its probably not supported.

My T420:
Intel Core i7 2670QM 2.2GHz / 8GB DDR3 1600 / ST Momentus XT 750GB / Nvidia Quadro 4200M / Intel HD 3000 / Wifi 6300N / 720p Webcam
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3 Posts

08-03-2013

California

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Re: T420s XMP profile?

2013-08-04, 10:33 AM

I just had to suck it up and test a bunch of different BIOS versions. In case anyone is having the same issue on a T420s, the latest BIOS that does 1600MHz is 1.31.

 

http://support.lenovo.com/en_US/downloads/detail.page?DocID=DS014992

http://download.lenovo.com/ibmdl/pub/pc/pccbbs/mobiles/8cuj12us.exe

 

I'm just hoping that the newer versions didn't add things that I actually needed. Any idea as to why they decided to limit RAM speed?

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