PC-100
PC-100This is 100MHz SDRAM memory in 144-pin SO-DIMM form-factor. |
Available memory types from IBM
Partnumber | FRU | Description |
---|---|---|
20L0253 | 20L0263 | 32MB PC100 SDRAM NP SO-DIMM |
20L0254 | 20L0264 | 64MB PC100 SDRAM NP SO-DIMM |
20L0255 | 20L0265 | 128MB PC100 SDRAM NP SO-DIMM |
33L3069 | 33L3070 | 256MB PC100 SDRAM NP SO-DIMM |
NOTE!
As PC-100 memory is getting increasingly difficult to aquire, PC-133 memory can be used instead. Using PC-133 memory will not increase system performance, as it will be run at only PC-100 speed.
ThinkPads that support this technology
ThinkPad Models | Soldered on systemboard |
DIMM Slot 1 |
DIMM Slot 2 |
Official Max-Memory |
Unofficial Max-Memory^{1} |
---|---|---|---|---|---|
240X | 64MB | Empty | NA | 192MB^{5} | Unknown |
390X | Occupied | Empty | 512MB^{2} | Unknown | |
570E | 64MB | Empty | NA | 320MB^{6} | Unknown |
600X | 64MB | Occupied | Empty | 576MB^{3} | Unknown |
A20m, A20p | Occupied | Empty | 512MB^{2} | Unknown | |
A21e | Occupied | Empty | 256MB^{4} | Unknown | |
A21m, A21p | Occupied | Empty | 512MB^{2} | Unknown | |
A22e - Celeron | Occupied | Empty | 256MB^{4} | Unknown | |
A22e - Pentium III | Occupied | Empty | 512MB^{2} | Unknown | |
A22m, A22p | Occupied | Empty | 512MB^{2} | Unknown | |
S30, S31 | 128MB | Empty | NA | 256MB^{5} | Unknown |
T20, T21, T22 | Occupied | Empty | 512MB^{2} | Unknown | |
TransNote | 64MB | Empty | NA | 320MB^{6} | Unknown |
X20 | 64MB | Empty or 64MB DIMM |
NA | 320MB^{6} | Unknown |
X21 | 64 or 128MB | Empty | NA | 320MB or 384MB^{6} | Unknown |
i Series 1200 | 32 or 64MB | Empty | NA | 160 or 192MB^{5} | Unknown |
i Series 1210 | 32MB | Empty | NA | 160MB^{5} | Unknown |
i Series 1230, i Series 1250, i Series 1260 |
64MB | Empty | NA | 192MB^{5} | Unknown |
i Series 1300, i Series 1330, i Series 1370 |
64MB | Empty | NA | 192MB^{5} | Unknown |
i Series 1422, i Series 1442, i Series 1482, i Series 1483, i Series 1492 |
Occupied | Empty | 256MB^{4} | Unknown | |
i Series 1542, i Series 1562, i Series 1592 |
Occupied | Empty | 256MB^{4} | Unknown |
FOOTNOTES [Δ] |
- See Unofficial_maximum_memory_specs
- Based on 2x 256MB DIMMs, might require removal of original base memory
- Based on base 64MB plus 2x 256MB DIMM in Slots 1 and 2
- Based on 2x 128MB DIMMs, might require removal of original base memory
- Based on base memory plus 128MB DIMM in Slot 1
- Based on base memory plus 256MB DIMM in Slot 1