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Further Lenovo X220 DIMM clarifiation: 1pc DIMM support

Posted on 2013-01-20
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Last Modified: 2013-01-23
http://www.experts-exchange.com/Hardware/Laptops_Notebooks/Q_27997244.html

Q1:
Pls refer to above EE thread / url.  I wish to add a couple more questions:
suppose I manage to find 1pc of 2GB or 1GB DIMM & by inserting just 1
pc into the X220, it works, does this mean 1pc of 8GB DIMM would work
as well?

Q2:
How do I determine my current DIMMs speed?  Any commands without
opening up the X220
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Question by:sunhux
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by:John Hurst
John Hurst earned 480 total points
ID: 38798329
suppose I manage to find 1pc of 2GB or 1GB DIMM & by inserting just 1
pc into the X220, it works, does this mean 1pc of 8GB DIMM would work
as well?


No. It means it will work on 1 module. Most laptops will work on one module. But the X220 is only specified for up to 4Gb modules.

How do I determine my current DIMMs speed?  Any commands without
opening up the X220


Find, download and install CPU-Z  (www.cpuid.com).  It will tell you about memory speed. Memory does not show up in Device Manager.

CPU-Z
I always use matched modules (best way), and CPU-Z just shows the one setup on this machine I am using.

.... Thinkpads_User
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Expert Comment

by:John Hurst
ID: 38798364
@sunhux - Also keep in mind that the memory modules you use must be specified for the X220. Memory modules from a different machine type are not likely to work. Notice the slot on the module plug. It changes position for different memory types and the slot has to match the socket.

So within reason, any memory that is specified and fits is going to work. The memory speeds will be a narrow range and will not have any noticeable affect on the speed of the machine.

You can improve speed of a computer by:
1. Using a 64-bit OS instead of 32-bit.
2. Using a 7200-rpm drive instead of a 5400-rpm drive.
3. Using an SSD solid state drive instead of a hard drive.
4. Using 4Gb or more Gb of memory on a 64-bit machine instead of 2Gb.

Beyond that, the speed of the memory won't make a lot of difference.

Also, for a machine that runs a standard load of software and virtual machines in addition, 8Gb is ample memory. It has never hindered me. My Thinkpad T61p has 8Gb (2 x 4Gb modules) and won't take 16Gb.  But I am not hampered.

.... Thinkpads_User
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Author Comment

by:sunhux
ID: 38798682
I'm on 64-bit Win 7.

As this is company work, I wont want to invest in SSD (& the
company won't invest in it either) but 8GB RAM is what the
company agrees to invest in.

I plan to build a RAMDisk to host my Outlook .pst file as I
often had to search thru tens of thousands of emails : this
.pst is now about 4GB & growing.  So if I can have 10GB,
it would be a bonus (ie 6GB for the pst file & another 4GB
for Win 7 & other apps)
0
 

Author Comment

by:sunhux
ID: 38798686
7200rpm HDD can take more than 3 minutes to search
thru about 100,000 emails, so a RAMdisk is my best bet
(& RAMdisk is faster than SSD).  I'll clone a copy of .pst
file to RAMdisk & maintaining one copy in the HDD
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Assisted Solution

by:John Hurst
John Hurst earned 480 total points
ID: 38798889
I have approximately 30,000 emails in my PST and 3 Archive files. A lot of these email are text and so the total size is about 4Gb. This sits on my hard drive. (POP3 system).

Now I use Windows 7 Pro 64-bit and index a great deal - certainly all my Outlook. Search finds what I ask across all mail in just seconds.

So while a Ramdisk may be a good idea, Windows indexing is superb. If you are on Exchange, index your OST files.

Raxco make decent Ramdisks and it would be worth looking at them. Also remember that Outlook likes its file local or on Exchange, so be careful with this.

Back to the original question:

1. There is no guarantee an 8Gb module will work but it probably will.
2. 16Gb is not supported, but if 1 8Gb module works, a second one probably will. There is more risk to the second one because that is tied up in the engineering design of the motherboard. All you can do is try.

.... Thinkpads_User
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Author Comment

by:sunhux
ID: 38804928
How do I check & turn on Windows indexing to speed up
my Outlook archived emails  search?
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Accepted Solution

by:
John Hurst earned 480 total points
ID: 38805106
There are a few steps to indexing.

General Overview of what is being indexed and status

Windows7-IndexOptions
Modification of locations to index. Be sure Users and Outlook are selected

Windows7-IndexOptions2
Make sure Indexing Service is enabled in Windows Features

Windows7-IndexOptions3
Also Windows Search

Windows7-IndexOptions4
Work through Windows Features and the Indexing Options and when you are satisfied all is set up as you wish, rebuild the index. This can take while (some hours) for 100,000 items.

... Thinkpads_User
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Expert Comment

by:John Hurst
ID: 38809367
@sunhux - Thank you and I was happy to help you with your X220.

.... Thinkpads_User
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