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adante
SCSI Port
Posts: 93
Registered: ‎06-29-2008
Location: AU
Views: 2,198
Message 1 of 35

W540 with G.Skill F3-1866C10D-16GRSL

Hi,

 

I just bought 2 x 2x8gb G.Skill F3-1866C10D-16GRSL SODIMSS (so 4x8gb, 32gb total) to put in my new W540. This is 1.35V so I thought should be compatible. Timings are 10-10-10-32 if it matters.

 

Unfortunately the system will not post - not with a single or multiple SODIMMS installed. Is this a compatibility issue?

 

cheers,

 

adante
SCSI Port
Posts: 93
Registered: ‎06-29-2008
Location: AU
Views: 2,175
Message 2 of 35

Re: W540 with G.Skill F3-1866C10D-16GRSL

Just an update with rather odd factors.

 

As long as I have the original 8gb sodimm (the one that it shipped with) plugged in, the system seems to boot fine.

 

So far I have been able to boot it with 8gb, 16, 24 and 32gb, as long as one of the SODIMMS is the factory one.

 

As soon as I take out the factory SODIMM, the system will not post.

 

I have not had a chance to thoroughly test different slot configurations to see if that is a factor, nor have I had a chance to run a full memtest to see if something else is going on.

 

One (highly speculative) guess is that without the factory SODIMM, the system is detecting all memory as 1866 and trying to run the memory at that speed and failing. With the factory SODIMM it is keeping it clocked clocking it back to 1600?

 

Any advise would be appreciated. Will update with results for memtest and possibly juggling through different DIMM slots.

 

mwcarlyle
Blue Screen Again
Posts: 32
Registered: ‎09-20-2009
Location: Canada
Views: 2,157
Message 3 of 35

Re: W540 with G.Skill F3-1866C10D-16GRSL

I have the same memory (GSkill Ripjaw 1866 CL10 1.35V) and it boots with 4X8GB sticks in (and shows 32GB of RAM running at 933MHz dual channel) ...but I tried to dual boot with Windows 8 and it would not install windows 8.  I did some checking on the web as to why it would not install - the most common problem was Memory errors.  I did a memory test and there are errors. 

 

I haven't had a chance to try to remove and add them back one at a time to see if it is one stick that is bad.  That's my next step.  I will post back with results when I get a chance.

zalbard
Punch Card
Posts: 55
Registered: ‎12-25-2013
Location: Germany
Views: 2,143
Message 4 of 35

Re: W540 with G.Skill F3-1866C10D-16GRSL


@adante wrote:

Just an update with rather odd factors.

 

As long as I have the original 8gb sodimm (the one that it shipped with) plugged in, the system seems to boot fine.

 

So far I have been able to boot it with 8gb, 16, 24 and 32gb, as long as one of the SODIMMS is the factory one.

 

As soon as I take out the factory SODIMM, the system will not post.

 


Looks like the factory SODIMM is forcing all 4 modules to operate at the lowest common denominator frequency - 1600Mhz.

 

Once all 4 modules support 1866Mhz - the system tries running them at 1866Mhz and fails.

 

Have you tried the latest BIOS?

adante
SCSI Port
Posts: 93
Registered: ‎06-29-2008
Location: AU
Views: 2,117
Message 5 of 35

Re: W540 with G.Skill F3-1866C10D-16GRSL

Yeah, that is what I suspected. I believe I am currently using the latest BIOS. CPU-Z Reports version GNET61WW (2.09), dated 02/18/2014

 

The BIOS Also reports UEFI BIOS Version GNET61WW (2.09 ). And Embedded Controller Version GMHT25WW (1.10 ).

 

I'd be interested in seeing what BIOS mwcarlyle is running as it seems to be working for him.

mwcarlyle
Blue Screen Again
Posts: 32
Registered: ‎09-20-2009
Location: Canada
Views: 2,112
Message 6 of 35

Re: W540 with G.Skill F3-1866C10D-16GRSL

I'm running Bios 2.08 - the one that was posted on the "how to brick a w540" thread... I was running 2.05 before that with the same memory.
adante
SCSI Port
Posts: 93
Registered: ‎06-29-2008
Location: AU
Views: 2,092
Message 7 of 35

Re: W540 with G.Skill F3-1866C10D-16GRSL

Thanks mwcarlyle. After looking at the changelog, I am increasingly suspicious the latest BIOS may be the issue:

 

<2.09>
 UEFI: 2.09 / ECP: 1.10
- (Fix) Fixed an issue that might fail to detect memory.

What's the best way to get an official response from Lenovo about this (I'm hoping just sit and wait - the forum interactions seem to be pretty good)?

 

If you do upgrade to 2.09 (although I'm not sure if this is a good idea), let me know if your experience changes.

rbdesign
Blue Screen Again
Posts: 3
Registered: ‎03-02-2014
Location: Boston
Views: 2,035
Message 8 of 35

Re: W540 with G.Skill F3-1866C10D-16GRSL

I've experienced the same problems with 32GB of Crucial Ballistix Sport DDR3L-1866 CL10 (PC3-14900) and can report that flashing the BIOS from v2.05 to v2.09 did not help. I exchanged the four SODIMMS for Crucial Ballistix Sport DDR3L-1600 CL9 (PC3-12800) and these pass repeated, extended memory tests in Lenovo diag's and pass Win-8 mem' test. While the Crucial.com memory finder did "guarantee" compatibility of DDR3L-1866 memory for W540 (quad-core) my experience has shown that it is not compatible.

adante
SCSI Port
Posts: 93
Registered: ‎06-29-2008
Location: AU
Views: 2,011
Message 9 of 35

Re: W540 with G.Skill F3-1866C10D-16GRSL

rbdesign did you try running some of the SODIMMS with a 1600mhz sodimm like I did?

 

I have been runnnig 3x1866 and 1x1600 in my machine for a few days now and no problems; although I've only run memtest for a bit over an hour. 

 

I thought the W540 should be capable of 1866. And even if not, that it would be able to downclock the memory to 1600.

 

Any Lenovo rep willing to comment on this?

rbdesign
Blue Screen Again
Posts: 3
Registered: ‎03-02-2014
Location: Boston
Views: 1,988
Message 10 of 35

Re: W540 with G.Skill F3-1866C10D-16GRSL

No I didn't. Exchanged 1866 CL10 SODIMMS for 1600 CL9 for lower latency. I think mixing SODIMMS would result in slower (1600) speed and longer (10 or 11) latency. Mixing SODIMMS of different speeds and/or latency is not optimal.

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