Difference between revisions of "PC-100"
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</div> | </div> | ||
|style="vertical-align:top" | | |style="vertical-align:top" | | ||
+ | [[image:so-dimm.jpg|SO-DIMM]] | ||
|} | |} | ||
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| 33L3069 || 33L3070 || 256MB 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 may be substituted on some models. Using PC-133 memory will not increase system performance, as it will be run at only PC-100 speed. PC133 memory cannot be used on T20, T21, or T22 models.}} | ||
=== ThinkPads that support this technology === | === ThinkPads that support this technology === | ||
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! ThinkPad Models !! Soldered<br>on systemboard !! DIMM<br>Slot 1 !! DIMM<br>Slot 2 !! Official<br>Max-Memory !! Unofficial<br>Max-Memory{{Footnote|1}} | ! ThinkPad Models !! Soldered<br>on systemboard !! DIMM<br>Slot 1 !! DIMM<br>Slot 2 !! Official<br>Max-Memory !! Unofficial<br>Max-Memory{{Footnote|1}} | ||
|- | |- | ||
− | | {{240X}} || 64MB || Empty || NA || 192MB{{Footnote|5}} || | + | | {{240X}} || 64MB || Empty || NA || 192MB{{Footnote|5}} || 256MB |
|- | |- | ||
| {{390X}} || || Occupied || Empty || 512MB{{Footnote|2}} || Unknown | | {{390X}} || || Occupied || Empty || 512MB{{Footnote|2}} || Unknown | ||
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| {{570E}} || 64MB || Empty || NA || 320MB{{Footnote|6}} || Unknown | | {{570E}} || 64MB || Empty || NA || 320MB{{Footnote|6}} || Unknown | ||
|- | |- | ||
− | | {{600X}} || 64MB || Occupied || Empty || 576MB{{Footnote|3}} || | + | | {{600X}} || 64MB || Occupied || Empty || 576MB{{Footnote|3}} || 576MB |
|- | |- | ||
| {{A20m}}, {{A20p}} || || Occupied || Empty || 512MB{{Footnote|2}} || Unknown | | {{A20m}}, {{A20p}} || || Occupied || Empty || 512MB{{Footnote|2}} || Unknown | ||
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| {{A21e}} || || Occupied || Empty || 256MB{{Footnote|4}} || Unknown | | {{A21e}} || || Occupied || Empty || 256MB{{Footnote|4}} || Unknown | ||
|- | |- | ||
− | | {{A21m}}, {{A21p}} || || Occupied || Empty || 512MB{{Footnote|2}} || Unknown | + | | {{A21m}}, {{A21p}} || || Occupied || Empty || 512MB{{Footnote|2}} || Unknown{{Footnote|8}} |
|- | |- | ||
− | | {{A22e}} - Celeron || || Occupied || Empty || 256MB{{Footnote|4}} || | + | | {{A22e}} - Celeron || || Occupied || Empty || 256MB{{Footnote|4}} || <384MB |
|- | |- | ||
| {{A22e}} - Pentium III || || Occupied || Empty || 512MB{{Footnote|2}} || Unknown | | {{A22e}} - Pentium III || || Occupied || Empty || 512MB{{Footnote|2}} || Unknown | ||
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| {{X21}} || 64 or 128MB|| Empty|| NA || 320MB or 384MB{{Footnote|6}} || Unknown | | {{X21}} || 64 or 128MB|| Empty|| NA || 320MB or 384MB{{Footnote|6}} || Unknown | ||
|- | |- | ||
− | | {{i1200}} || 64MB|| Empty|| NA || 192MB{{Footnote|5}} || | + | | {{i1200}} || 32 or 64MB|| Empty|| NA || 160 or 192MB{{Footnote|5}} || PC133/256MB{{Footnote|6}} |
|- | |- | ||
| {{i1210}} || 32MB|| Empty|| NA || 160MB{{Footnote|5}} || Unknown | | {{i1210}} || 32MB|| Empty|| NA || 160MB{{Footnote|5}} || Unknown | ||
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# Based on 2x 128MB DIMMs, might require removal of original base memory | # 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 128MB DIMM in Slot 1 | ||
− | # Based on base memory plus 256MB DIMM in Slot 1}} | + | # Based on base memory plus 256MB DIMM in Slot 1 |
− | [[Category: | + | # Based on [http://www.mac-how.net/ Mac-How] |
+ | # Based on base 64MB plus 1x 256MB and 1x 128MB DIMMs in Slots 1 and 2 | ||
+ | # Intel 440BX motherboard accepts up to 128 Mbit (''not '''Mbyte''''') chips on the SODIMM, i.e.: 16MX8, 32MX4, etc. A 256MB SODIMM '''must''' have 16 visible chips to be compatible. 512MB per slot, for a total of 1GB, is theoreticaly possible; "stacked" SODIMMS with 32 128Mb chips exist, but they're rare, expensive, and may not fit in the RAM slots with the cover closed.}} | ||
+ | [[Category:DRAM]] |
Revision as of 10:14, 2 May 2020
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 may be substituted on some models. Using PC-133 memory will not increase system performance, as it will be run at only PC-100 speed. PC133 memory cannot be used on T20, T21, or T22 models.
ThinkPads that support this technology
ThinkPad Models | Soldered on systemboard |
DIMM Slot 1 |
DIMM Slot 2 |
Official Max-Memory |
Unofficial Max-Memory1 |
---|---|---|---|---|---|
240X | 64MB | Empty | NA | 192MB5 | 256MB |
390X | Occupied | Empty | 512MB2 | Unknown | |
570E | 64MB | Empty | NA | 320MB6 | Unknown |
600X | 64MB | Occupied | Empty | 576MB3 | 576MB |
A20m, A20p | Occupied | Empty | 512MB2 | Unknown | |
A21e | Occupied | Empty | 256MB4 | Unknown | |
A21m, A21p | Occupied | Empty | 512MB2 | Unknown8 | |
A22e - Celeron | Occupied | Empty | 256MB4 | <384MB | |
A22e - Pentium III | Occupied | Empty | 512MB2 | Unknown | |
A22m, A22p | Occupied | Empty | 512MB2 | Unknown | |
S30, S31 | 128MB | Empty | NA | 256MB5 | Unknown |
T20, T21, T22 | Occupied | Empty | 512MB2 | Unknown | |
TransNote | 64MB | Empty | NA | 320MB6 | Unknown |
X20 | 64MB | Empty or 64MB DIMM |
NA | 320MB6 | Unknown |
X21 | 64 or 128MB | Empty | NA | 320MB or 384MB6 | Unknown |
i Series 1200 | 32 or 64MB | Empty | NA | 160 or 192MB5 | PC133/256MB6 |
i Series 1210 | 32MB | Empty | NA | 160MB5 | Unknown |
i Series 1230, i Series 1250, i Series 1260 |
64MB | Empty | NA | 192MB5 | Unknown |
i Series 1300, i Series 1330, i Series 1370 |
64MB | Empty | NA | 192MB5 | Unknown |
i Series 1422, i Series 1442, i Series 1482, i Series 1483, i Series 1492 |
Occupied | Empty | 256MB4 | Unknown | |
i Series 1542, i Series 1562, i Series 1592 |
Occupied | Empty | 256MB4 | 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
- Based on Mac-How
- Based on base 64MB plus 1x 256MB and 1x 128MB DIMMs in Slots 1 and 2
- Intel 440BX motherboard accepts up to 128 Mbit (not Mbyte) chips on the SODIMM, i.e.: 16MX8, 32MX4, etc. A 256MB SODIMM must have 16 visible chips to be compatible. 512MB per slot, for a total of 1GB, is theoreticaly possible; "stacked" SODIMMS with 32 128Mb chips exist, but they're rare, expensive, and may not fit in the RAM slots with the cover closed.