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I need 2x 4GB RAM, a total of 8GB, in my upcoming Thinkpad X200s laptop. Before buying, I would like your advice on which modules to choose.

I've been looking at Corsair's Value Select (P/N: CM3X4GSD1066) RAM, because in my experience they produce good RAM modules.

However, Corsair lists 7 clock cycles for their modules while Lenovo lists 5 clock cycles.

What do you think? Is Lenovo modules the best choice? Are they the fastest/most stable, or is it the Corsair modules? Or modules from a third vendor?

Thanks in advance!

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closed as off-topic by Olli, Heptite, random Feb 13 '14 at 5:00

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Questions seeking for hardware shopping recommendations are off-topic because they are often relevant only to the question author at the time the question was asked and tend to become obsolete quickly. Instead of asking what to buy, try asking how to find out what suits your needs." – Olli, Heptite, random
If this question can be reworded to fit the rules in the help center, please edit the question.

I searched google for "lenovo x200s 8gb memory" and the first in the results was a pdf-document from lenovo stating this in the footnotes.

"Footnotes: [1] Memory: Lenovo notebooks have a new 64-bit architecture. Notebooks with a Windows Vista 32-bit or previous Windows 32-bit operating system can support up to 2.5GB of addressable memory. Notebooks with a Windows Vista 64-bit operating system can support up to 8GB of addressable memory. Maximum capacity may require purchase of optional component. Subject to availability of 4GB DIMMs. [2] Models with 4GB Memory: Total accessible memory will be less and will vary depending on the system configuration. Maximum capacity may require purchase of optional component. Subject to availability of new 4GB DIMMs."

So its safe to buy 8GB of memory, If your OS can handle it. :)


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According to the Kingston website the maximum you can put in there is 4 GB

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That is not true. Lenovo only "supports" 4GB I guess, but the hardware can take 8GB. It's used by many X200s users and other thinkpad users. – Tommy Jakobsen Sep 10 '09 at 15:33
while it 'may' work, the only sound advice is to stick with the manufacturers recommendations. or discuss the matter at the thinkpad forum where some users are discussing the matter. obviously someone's got experience with 8 GB in the x200s. i'm pretty sure they'll gladly share their expertence with you. registration is free :) as for the Corsair Value Select memory modules, they're good bang for the buck (as the name suggests) but nothing to write home about when it comes to performance benchmarks. i'm using some CVS 2GB DDR2 myself. – Molly7244 Sep 10 '09 at 17:44
But the Intel GM45 chipset supports 8GB RAM. So it would be odd if it does not support it? – Tommy Jakobsen Sep 11 '09 at 16:47

I would buy exactly what the other 8gb RAM x200 users are using. If it is an officialy unsupported configuration, I would want to know exactly what others experiences were. I would do some research and buy the exact modules that other people have bought and have had success stories. It will help you reduce your chance of problems.

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I don't think it's a problem:… - Anyway, I would like some advice on whats the best 4GB modules? – Tommy Jakobsen Sep 10 '09 at 17:05
Yah, in that forum, people were asking what he was using several times, but he never said. I wonder if we can find anyone with concrete information. – Troggy Sep 10 '09 at 17:21
But the Intel GM45 chipset supports 8GB RAM. – Tommy Jakobsen Sep 11 '09 at 16:48
@Tommy You are correct, the chipset may support 8gb, but that doesn't mean all 4gb ram sticks will work in the machine. I have seen picky laptops (oddly enough, older thinkpads) before when buying max RAM upgrades. We are not saying it won't work, it is just not a guarantee. – Troggy Sep 11 '09 at 17:20
That is why we need to find someone who has put 8gb in a x200 and ask them/find out what exact RAM they bought. That way you can be pretty sure it will work. – Troggy Sep 11 '09 at 17:22

Clock cycles don't really make much difference in real world use. Just buy the fastest speed of some name brand with a lifetime warranty and you'll be fine. If you really need more advice than that, go to newegg, select the capacity and speed, and buy the one with the highest rated reviews.

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You should only be buying your RAM from Lenovo or an authorized reseller unless you want to risk potential complications with your warranty. (It's unlikely to invalidate it unless it toasts the machine, but better safe than sorry...if you buy RAM with a valid Lenovo FRU it will carry the warranty of the laptop.)

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