PC2700

NOTE! As PC2700 is getting increasingly difficult to acquire, PC3200 can be used instead. Using PC3200 may or may not increase the performance of your model, as some models may underclock it to their respective original DRAM speeds. PC2700 This is DDR SDRAM at 333 MT/s in a 200-pin SO-DIMM form-factor. DDR333 may also be interchangeably referred to as PC2700.

Available DRAM modules from Lenovo

DDR2 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 128MB PC2700 CL2.5	31P9828	N/A	31P9829
Non-ECC, unbuffered 1Rx16 256MB PC2700 CL2.5	31P9830	N/A	31P9831
Non-ECC, unbuffered 1Rx8 512MB PC2700 CL2.5	31P9832	N/A	31P9833
Non-ECC, unbuffered 2Rx8 1GB PC2700 CL2.5	31P9834	N/A	31P9835

Taken from Lenovo, Memory compatibility - Notebooks.

Models that support this technology

Models	Soldered on motherboard	SO-DIMM Slot 1	SO-DIMM Slot 2	Official Max-Memory	Unofficial Max-Memory
T41, T41p, T42, T42p	N/A	Occupied	Depends	2GB1	2GB1
X40	256MB or 512MB	Occupied	N/A	1.28GB2 or 1.5GB2	1.28GB2 or 1.5GB2
X31, X32	N/A	Occupied	Depends	2GB1	2GB1
R50, R50e, R50p, R51	N/A	Occupied	Depends	2GB1	2GB1
G41	N/A	Occupied	Depends	2GB1	2GB1

FOOTNOTES [Δ]

1. Attained via two 2Rx8 1GB DDR non-ECC SO-UDIMMs, not possible with 1Rx8 1GB DDR non-ECC SO-UDIMMs. (if they exist)
2. Attained via one 2Rx8 1GB DDR non-ECC SO-UDIMMs, not possible with 1Rx8 1GB DDR non-ECC SO-UDIMMs. (if they exist)

Available DRAM modules from other companies

Manufacturer	Partnumber	Description	Tested on model
TBD	TBD	TBD	TBD