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I apologize if this is not the right *exchange to ask, but this is the closest one I guess. My ThinkPad X201 supports only PC3 memory and I have one extra module PC3L (stands for Low Voltage AFAIK).

Can I try to put it in or is this dangerous? Can I use PC3 and PC3L modules together?

I do not want to damage my laptop, thus asking :-)

Thanks

lzap
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2 Answers2

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Yes, your laptop supports DDR3 (PC3- refers to DDR3) SODIMM memory, if the PC3L memory which you have is SODIMM (204pin) then you can install it with out any issues else if it is DIMM (240-pin) then don't even think about it. You will not be harming your system in anyway by installing the low voltage memory, if the memory is incompatible then it may not boot. Usually, the laptop will work fine with 1.35v memory (Low voltage) since your laptop comes with either i3, i5 or i7 processor. Moreover, Crucial.com has listed 1.35v SODIMM memory.

BTW, it is weird to hear that you were able to install a DDR3 memory in DDR2 slot. DDR3 and DDR2 memory have different notch positions on the module and so they will not fit. Moreover, they are electrically incompatible.

Hope that helps!!! :-)

wit
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If the slot marked pc3l only, then pc3 may NOT work at all. Even if same 1.35v SODIMM. I have Dell inspiron 15 5000 series, SODIMM 204pin slot, DDR3 PC3 DDR3 1.35v, 1600HZ memory not working. I tried crucial and Samsung brand PC3 DDR3 1.35v, 1600HZ memory, both not working. Only PC3L memory work.

johnx
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