PC2100

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PC2100

This is DDR (Double Data Rate) memory in 200-pin SO-DIMM form-factor.
PC2100 memory is also called DDR266

SO-DIMM

Available memory types from IBM or Lenovo

Partnumber FRU Description
10K0028 10K0029 128MB PC2100 DDR-SDRAM CL2.5 SO-DIMM
10K0030 10K0031 256MB PC2100 DDR-SDRAM CL2.5 SO-DIMM
10K0032 10K0033 512MB PC2100 DDR-SDRAM CL2.5 SO-DIMM
10K0034 10K0035 1GB PC2100 DDR-SDRAM CL2.5 SO-DIMM1
NOTE!
As PC2100 memory is getting increasingly difficult to aquire, PC2700 memory can be used instead. Using PC2700 memory will not increase system performance, as it will be run at only PC2100 speed.

ThinkPads that support this technology

ThinkPad Models Soldered
on systemboard
DIMM
Slot 1
DIMM
Slot 2
Official
Max-Memory
Unofficial
Max-Memory2
A31, A31p Occupied Empty 1GB3 2GB4 5 7
G40 Occupied Empty 1GB3 Unknown
R32 Occupied Empty 1GB3 2GB4 5 7
R40 - Celeron or Pentium 4-M Occupied Empty 1GB3 Unknown
R40 - Pentium M Occupied Empty 2GB4 Unknown
R40e Occupied Empty 1GB3 Unknown
T30 Occupied Empty 1GB3 2GB4 5 7
T40, T40p Occupied Empty 2GB4 2GB4 6 7
X31 Occupied Empty 2GB4 2GB4 6 7

FOOTNOTES [Δ]
  1. Only supported with R40 (Pentium M models), T40, T40p and X31
  2. See Unofficial_maximum_memory_specs
  3. Based on 2x 512MB DIMMs, might require removal of original base memory
  4. Based on 2x 1GB DIMMs, requires removal of original base memory
  5. DDR SO-DIMM modules exist at a maximum of 1GB. You cannot physically install more than 1 GB per slot.
  6. DDR SO-DIMM modules exist at a maximum of 1GB. You cannot physically install more RAM than the official specs state.
  7. Chipset is limited to 2GB.