PC2-4200

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NOTE!
As PC2-4200 is getting increasingly difficult to acquire, PC2-6400 can be used instead. Using PC2-6400 may or may not increase the performance of your model, as some models may underclock it to their respective original DRAM speeds.

PC2-4200

This is DDR2 SDRAM at 533 MT/s in a 200-pin SO-DIMM form-factor. DDR2-533 may also be interchangeably referred to as PC2-4200.

SO-DIMM

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 2Rx16 256MB PC2-4200 CL4 73P3840 N/A 73P3841
Non-ECC, unbuffered 2Rx16 512MB PC2-4200 CL4 73P3842 N/A 73P3843
Non-ECC, unbuffered 2Rx8 1GB PC2-4200 CL4 73P3844 N/A 73P3845
Non-ECC, unbuffered 2Rx8 2GB PC2-4200 CL4 73P3846 N/A 73P3847

Models that support this technology

Models Soldered
on motherboard
SO-DIMM
Slot 1
SO-DIMM
Slot 2
Official
Max-Memory
Unofficial
Max-Memory
T43, T43p N/A Occupied Depends 2GB1 3 2GB1 3
X41, X41 Tablet 256MB or 512MB Occupied N/A 2GB2 3 2GB2 3
R51e, R52 N/A Occupied Depends 2GB1 3 2GB1 3
Z60t, Z60m N/A Occupied Depends 2GB1 3 2GB1 3

FOOTNOTES [Δ]
  1. Attained via two 2Rx8 1GB DDR2 non-ECC SO-UDIMMs, also possible with 1Rx8 1GB DDR2 non-ECC SO-UDIMMs.
  2. Attained via one 2Rx8 2GB DDR2 non-ECC SO-UDIMMs, may not be possible with 1Rx8 2GB DDR2 non-ECC SO-UDIMMs.
  3. The i915 series chipsets are completely incapable of addressing over 2GB, not because of an I/O space limitation, but due to Intel's intentional hardware limitation (a.k.a. crippling them). This is painfully obvious as the desktop i915 series chipsets are not affected by this limitation, since they can address past 2GB (up to 4GB).

Available DRAM modules from other companies

Manufacturer Partnumber Description Tested on model
TBD TBD TBD TBD