Re: 16GB memory for X240 #5 Post by jdrou » Thu Jul 24, 2014 9:37 pm With more ultraportable laptops having only one RAM slot available for upgrade I would certainly expect demand for higher-density modules to increase. Lenovo ThinkPad X240 - 12.5' - Core i5 4300U - 4 GB RAM - 256 GB SSD - US Specs Lenovo ThinkPad X240 - 12.5' - Core i5 4300U - 4 GB RAM - 256 GB SSD - US 20AM009LUS. How many total memory slots to install memory? The Laptop has 1 (1 bank of 1)to install memory, already with 4GB standard memory installed. For best Lenovo ThinkPad X240 Laptop performance use the maximum amount of 8GB, fill all the slots with the max allowed memory per slot for your Laptop. What is the warranty on these memory?
- Lenovo X240 How Many Memory Slots
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Memory Speed Processor Graphics i3-4010U 24. Some: Single-sided M.2 SSD, via M.2 card slot, exclusive with Smart card reader. ThinkPad X240.indd.
I'm considering buying an X240, mostly because of the screen resolution. One downside of the X240, is that it only accepts 1 single SODIMM, which to now were only available up to 8GB sizes. I do need more than that to process the datasets I use.
Has anybody tested these? Does the BIOS allow for 16GB?
Lenovo X240 How Many Memory Slots
http://www.intelligentmemory.com/dram-m ... 3-so-dimm/They appear to have a module code IMM2G64D3(L)SOD8AG which appears to be the first 16GB, and can do DDR3-1600. They may become available by mid April at $300
This post suggests it won't work...
On the other hand, it was 'undocumented' that 2 8GB sticks could be used in X2xx series back in the day..
Adding a bit more info
A person from intelligentmemory says that a Haswell machine will not work with these chips, unless a change of the memory reference code, which is part of the BIOS. It is not yet 100% sure if it can be fixed by a BIOS update or not. On March 10, 2014, they did have a customer make it work on an Ivybridge E by modifying the memory reference code. Lenovo could work with Intel, and change this code.
Any ideas? Any Lenovo and/or Intel folks around?
Thinkpad X240 How Many Ram Slots Drivers
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ThinkPad X240This page gives an overview of the ThinkPad X240 (machine types 20AL and 20AM). FeaturesDimensions:
Features:
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RAM upgradability
Thinkpad X240 How Many Ram Slots Slot
This model has a single SODIMM socket, which supports up to 8GB of RAM (PC3-12800 DDR3L SDRAM 1600MHz SODIMM).
The CPU does not support more than 8GB of RAM per SODIMM module. In particular, Linux and Windows fails to boot, and MemTest86+ crashes, when using a 16GB SO-DIMM module, model IMM2G64D3LSOD8AG-B15E from Intelligent Memory (which does work in a ThinkPad X250).
Disassembly
Any internal component replacement or upgrade (including hard disk and expansion cards) requires opening the back cover. Keyboard replacement requires full assembly and disassembly of the system board, and fresh thermal paste for the CPU heatsink.
Opening the case involves two stages:
- Opening a handful of screws (these have tiny retainer rings made of transparent plastic; be careful not to drop them when removing the back cover).
- Carefully prying apart dozens of little fragile plastic latches. This requires a plastic case opening tool to avoid damage (a metal screwdriver will nick and scratch the plastic).
Key mapping
This model has a 6-row keyboard, where the F1 through F12 share the same top-row physical keys with special functions keys (volume, brightness, etc.). By default, the top-row keys invoke the special functions, and require Fn keypress to invoke the usual F1 through F12 functions. To switch the role and have the top-row keys default to F1 through F12, enable Fn-Lock mode (by pressing Fn+Esc).
Moreover, End and Insert share the same physical key. When Fn-Lock is activated, the key default to Insert, and End is invoked as Fn+Insert, which many users find inconvenient. To switch the End and Insert functions, in modern Linux distribution, add the following in a new file /usr/lib/udev/hwdb.d/61-ThinkPad-X240-keyboard.hwdb:
Then run:
# udevadm hwdb --update
(The keyboard:... line matches /sys/devices/virtual/dmi/id/modalias, and the hex scancodes are found using
# evtest /dev/input/by-path/platform-i8042-serio-0-event-kbd
. )Resources
Resources (by Lenovo)
Other Documents
Pages in category 'X240'
The following 21 pages are in this category, out of 21 total.
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