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Kilobyte Kid
Posts: 1
Registered: ‎07-23-2010

X230t PC3-14900 vs. PC3-12800???

[ Edited ]

I have a Lenovo ThinkPad X230t Tablet I7-3520M. I’m interested in the 16GB (8GBx2), Ballistix 204-pin SODIMM, DDR3 PC3-14900 memory modules. This link for one 8GB of those modules states it will fit the X230t ( ) & other forum posters stating they fit in some other ThinkPads (T430, T&W530, Y series, etc). It should fit in the X230t...correct?


The 1st part of my other question is will the PC3-14900 RAM be clocked down all the way to PC3-12800 or will I see any improvements? I saw on a Lenovo forum where they used 16900 & it worked w/o clocking down, but did not work for some memory modules w/ fast timings ( ). The 2nd part is the timings are different The PC3-14900 = 10-10-10-30 & the PC3-12800 = 9-9-9-24. Any advanages/ disadvantagges or will faster PC3-14900 RAM outweigh "Any" disadvantages. If the faster RAM does under clock, will the timings be better (9-9-9-24) or get worse?


PC3-14900 Link:

PC3-12800 Link:


I also heard under clocked RAM runs cooler.


I recall the Crucial advisory tool saying for years that Dell Dimension desktops would only accept DDR 2700 or below RAM, but not DDR-3200. No offense meant towards Crucial as I love their reliable products!


I read multiple forums over the past few months, but then it hit me that this forum was the best place for the answer.


I’m lost on which if any to purchase. Any thoughts and/ or suggestions would be Greatly Appreciated!


Long time member, even longer lurker, but 1st time poster.


Thanks in Advance & Have a Great Day!

Community Manager
Posts: 2,262
Registered: ‎06-21-2011

Re: X230t PC3-14900 vs. PC3-12800???

in reply to takenitlight

Hi takenitlight,


Thank you for contacting us today.  From what I can find on Lenovo's site your system has a front side bus speed of 1600mhz, so the RAM will clock down to 1600 mhz as you had suspected. Both the PC3-14900 and the PC3-12800 will work the same in your system. The Ballistix sport memory modules do not require the timings to be adjusted. They are set up to do that on there on. There is a price difference between the two to keep in mind since you will not be seeing the full speed of the PC3-14900. Unless you are planning on using these in another system in the future, I would recommend just purchasing the PC3-12800. Both RAM modules will run the same temperature as they do have the same voltage, so there really is no advantage to purchasing the faster speed with this Thinkpad. Please let us know if you have any other questions or concerns about this memory upgrade.

YogiH, Crucial Moderator, US

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