PC2-5300

PC2-5300 This is DDR2 (Double Data Rate) memory in 200-pin SO-DIMM form-factor. PC2-5300 memory is also called DDR2-667

Available memory types from Lenovo

Partnumber	FRU	Description
40Y7732	40Y8401	256MB PC2-5300 DDR2 CL5 SO-DIMM
40Y7733	40Y8402	512MB PC2-5300 DDR2 CL5 SO-DIMM
40Y7734	40Y8403	1GB PC2-5300 DDR2 CL5 SO-DIMM
40Y7735	40Y8404	2GB PC2-5300 DDR2 CL5 SO-DIMM

ThinkPads that support this technology

ThinkPad Models	Soldered On Systemboard	DIMM Slot 1	DIMM Slot 2	Official Max-Memory	Unofficial Max-Memory1
T60, T60p		Occupied	Empty	4GB2	Unknown
R60e		Occupied	Empty	4GB2	Unknown
X60, X60s		Occupied	Empty	4GB2	Unknown

FOOTNOTES [Δ]

1. See Unofficial maximum memory specs
2. Based on 2x 2GB DIMMs. Due to Intel 945 chipset limitation, addressable memory will be (4GB - I/O space) ~ 3.2GB

Available PC2-5300 memory from other manufacturers

Manufacturer	Partnumber	Description	Tested on model
Crucial	CT2KIT12864AC667	2x1 GB	R60e (0657-3LG1)
Crucial	CT25664AC667	2 GB
Crucial	CT2KIT6464AC667	2x512 MB
Crucial	CT12864AC667	1 GB
Crucial	CT6464AC667	512 MB
G.Skill	F2-5400PHU1-1GBSA	1 GB	T60p (2007-93G2)

FOOTNOTES [Δ]

1. The memory module that was shipped with this laptop had the same Micron logo as the modules from Crucial, which is a division of that company.
2. Memory for T60p spec is CL5, but this module which was CL4 works fine. The product page at G.Skill describes it wrongly as a CL5 module.