PC3-10600

NOTE! As PC3-10600 is getting increasingly difficult to acquire, PC3-12800 can be used instead. Using PC3-12800 may or may not increase the performance of your model, as some models may underclock it to their respective original DRAM speeds. PC3-10600 This is DDR3 SDRAM at 1333 MT/s in a 204-pin SO-DIMM form-factor. DDR3-1333 may also be interchangeably referred to as PC3-10600.

Available DRAM modules from Lenovo

DDR3 type	Individual / Single-Pack Option Marketing Part Number	25-Pack Option Marketing Part Number	Field Replacement Unit (FRU) Service Part Number
Non-ECC, unbuffered 1Rx16 1GB PC3-10600 CL9	55Y3709	57Y4415	55Y3715
Non-ECC, unbuffered 1Rx8 2GB PC3-10600 CL9	55Y3710	57Y4416	55Y3716
Non-ECC, unbuffered 1Rx8 4GB PC3-10600 CL9	55Y3711	N/A	55Y3717
Non-ECC, unbuffered 2Rx8 8GB PC3-10600 CL9	N/A	N/A	03X6401

Taken from Lenovo, Memory compatibility - Notebooks.

Models that support this technology

Models	Soldered on motherboard	SO-DIMM Slot 1	SO-DIMM Slot 2	SO-DIMM Slot 3	SO-DIMM Slot 4	Official Max-Memory	Unofficial Max-Memory
W701, W701ds	N/A	Occupied	Depends	Depends	Depends	16GB	32GB1
W520 (w/ quad-core CPU)	N/A	Occupied	Depends	Depends	Depends	16GB	32GB1
W520 (w/ dual-core CPU)	N/A	Occupied	Depends	N/A	N/A	8GB	16GB2
W510 (w/ quad-core CPU)	N/A	Occupied	Depends	Depends	Depends	16GB	32GB1
T520, T520i	N/A	Occupied	Depends	N/A	N/A	8GB	16GB2
T420s, T420si	N/A	Occupied	Depends	N/A	N/A	8GB	16GB2
T420, T420i	N/A	Occupied	Depends	N/A	N/A	8GB	16GB2
X1, X1 Hybrid	N/A	Occupied	N/A	N/A	N/A	8GB3	8GB3
X220 Tablet, X220i Tablet	N/A	Occupied	Depends	N/A	N/A	8GB	16GB2
X220, X220i	N/A	Occupied	Depends	N/A	N/A	8GB	16GB2
L520	N/A	Occupied	Depends	N/A	N/A	8GB	16GB2
L420, L421	N/A	Occupied	Depends	N/A	N/A	8GB	16GB2

FOOTNOTES [Δ]

1. Attained via four 2Rx8 8GB DDR3 non-ECC SO-UDIMMs, not possible with 1Rx8 8GB DDR3 non-ECC SO-UDIMMs.
2. Attained via two 2Rx8 8GB DDR3 non-ECC SO-UDIMMs, not possible with 1Rx8 8GB DDR3 non-ECC SO-UDIMMs.
3. Attained via one 2Rx8 8GB DDR3 non-ECC SO-UDIMM, not possible with 1Rx8 8GB DDR3 non-ECC SO-UDIMMs.

Available DRAM modules from other companies

Manufacturer	Partnumber	Description	Tested on model
TBD	TBD	TBD	TBD