Thinkpads Forum

Greetings

Looking for a list or blacklist of working x200/201/s 2x4GB memory sticks as there are many that do not work. I know that such list existed but I can't find it.

In general single sided ram sticks (1Rx8) do not work at all in dual-mode. Some double sided sticks (2Rx8) work, some not.

Let me list few examples:

Working:

Crucial CT51264BF160B
Crucial CT2K4G3S1067M
Crucial CT2C4G3S1067M
Crucial CT2KIT51264BC1339
Samsung M471B5273CH0-CF8
Samsung M471B5273BH1-CH9
Samsung M471B5273DH0-CH9
Patriot PSA34G10662S
G.Skill F3-8500CL7S-4GBSQ

Not working:

Crucial CT51264BF160BJ
Corsair CM3X4GSD1066
Kingston KVR13S9S8K2/8

Even if list doesn't exist it could be good to make such one again. For that all is needed is to post here your x20x Lenovo version and working ram brands and their serials. If you are using libreboot, it could be wise to state it too as it might have it own compatibility problems.

Cheers.

Hi!

This Samsung Modules work: M471B5273BH1-CH9 (SO-DIMM DDR3-1333MHz PC3-10600 CL9)

Greets,

PAnDora

Hello.

Kingston DDR-III SODIMM 8Gb PC3-10600 (KVR13S9S8K2/8) KIT 2*4Gb didn't worked on my X201. The laptop starts, BIOS dispalys correct memory size, but neither Memtest nor OS works more than a few seconds.

The seller assumed that it's probaly because of 8*512Mb memory chips (1 row of 4 chips on each side) and sugested to try some other module with 16*256Mb chips (2 rows of 4 chips on each side) when they will be available.

Yes, single sided RAM sticks called 1Rx8 do not work at all. You need double sided called 2Rx8. Problem is, not every double stided stick pair works.

Just installed two 4Gb Samsung M41B5273DH0-CH9 memory sticks on my 201, they're working just fine.

DDR3 Hynix 4GB 2Rx8 PC3-10600S-9-11-F3 HMT351S6CFR8C-H9 N0 AA - approved

Just tried 2x4Gb Corsair CMSA8GX3M2A1066C7 on my X200, doesn't work

Tested on my X201s by myself:

DOES NOT WORK - Kingston HyperX 1600MHz DDR3L 4GB x2, CL9 1.35V, these are 1Rx8 (single-ranked, double-sided)
DOES NOT WORK - Corsair Vengeance 1600MHz DDR3L 4GB x2, CL9 1.35V, these are 1Rx8 (single-ranked, double-sided)
WORKS - Samsung 1333MHz DDR3 4GB x2, CL9 1.5V, these are 2Rx8 (dual rank, double-sided)
WORKS - Crucial Ballistix 1600MHz DDR3L 4GB x2, CL9 1.35V, these are 2Rx8 (dual rank, double-sided)

Hope this helps.

Tested on my x200 :

2x4Gb G.Skill F3-8500CL7D-8GBSQ -> WORKS
According to the title of this thread, the following ram modules shouldn't be here. But listing them may help finding working 4Gb modules :
2Gb Ramaxel RMT3020EF48E8W-1333 -> WORKS
2Gb Samsung M471B5673FHO-CF8 -> WORKS

Would be helpful for other users if you could change the thread title to read x20X or x200/x201 instead of x200. Excellent thread BTW.

Working pairs of 4 GB modules in X201:
Samsung M471B5273DH0-CH9 works @533-7-7-7-20 timings [PC3-10600 2Rx8]
Hynix HMT351S6EFR8C-PB works @533-7-7-7-19 timings [PC3-12800 2Rx8] (these are pulled from a Dell laptop)
Kingston HyperX PnP KHX1600C9S3P1K2/8G works @533-6-6-6-18 timings [PC3-12800 2Rx8]
Nanya NT4GC64B8HG0NS-DI works @533-7-7-7-19 timings [PC3-12800 2Rx8]

Thanks for a great thread.

Is there a noteworthy difference in performance between the ram modules certified to work? How can one choose 'the best' or at least a well performing module?

GNUbahn wrote:Thanks for a great thread.

Is there a noteworthy difference in performance between the ram modules certified to work? How can one choose 'the best' or at least a well performing module?

Stability is really far more important. You probably will not notice any difference between different modules running at the same clock speed, even those with better latency/timings. Even a clock speed difference may not be noticeable unless you're using Intel graphics like the X2xx series (since the main memory is then also your only graphics memory). I haven't had any significant problems with any of the models mentioned here; most people would probably advise staying away from "value" brands like Kingston ValueRAM. If you just want to have the "best" then look for modules with low latency at the clock speed you're running them. These are usually special performance brands like Kingston HyperX, Crucial Ballistix, Corsair Vengeance, and G.SKILL Ripjaws.

Thanks.
I'm a bit confused about this though:

jdrou wrote: Even a clock speed difference may not be noticeable unless you're using Intel graphics like the X2xx series (since the main memory is then also your only graphics memory).

Isn't this thread exactly about the X2xx series?

The specs of the x200/x201 is designed because 4500MHD northbridge for x200 also x201 CPU MCP (two die package of CPU, and northbridge with iGPU) calls for DDR3-1066 MHz in addition to this said ram have to be 2Rx8 (16 chips per memory module, aka low density).

If memory modules are found DDR3-1333 2x 4GB, both said computers will run at 1066MHz regardless.
Also preferred way to obtain reliable results; best source is ebay for matched used or new 2Rx8 modules. Keep in mind: Retail sources new DDR3 modules no longer exists for 2Rx8 aka low density anywhere as they are 8 chips per module.

Cheers, thinkpadcollection

Thanks for the elaboration.

GNUbahn wrote:Thanks.
I'm a bit confused about this though:

jdrou wrote: Even a clock speed difference may not be noticeable unless you're using Intel graphics like the X2xx series (since the main memory is then also your only graphics memory).

Isn't this thread exactly about the X2xx series?

Yes but the advice is pretty much the same for any laptop. Only that bit is more specific.
Also as thinkpadcollection mentions regardless of the speed rating on the RAM itself it won't run faster than DDR3-1066 in these particular systems.

Thanks. I'm beginning to get the picture (more questions will probably emerge later, though)

Does this apply to 1rx8 2GB sticks for a total of 4GB? I picked up some 1rx8 2GB pc3-10600s Hynixes from a T420 that I could not get to work in a T500. Would they work in X201 or am I out of luck and need to source some 2rx8 Ram?

2x4GB 2rx8 Hynix/SKHynix PC3-12800s 1600mhz (normal PC3-12800s, NOT PC3L-12800s) works in my X200, also works in my T500, running in both @1066 speeds. Low voltage PC3L does not work at all in these older models.