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3.795 bytes |
Service Hints & Tips |
Document ID: RMIE-3JJHFH |
IBM PC330/PC350 - L2 cache upgrade for cacheless models
Applicable to: World-Wide
Service Information:
Entry models (65x6-25F) of the PC-300 P75 come with no Level 2 cache fitted. Although IBM does not currently offer an L2 cache upgrade option, here is the Approved Vendor List for the necessary parts
8 data chips and 1 tag chip are required. The data chips can be 15ns or 20ns but the tag chip must be 15ns. Note that the data chips are 3.3 volt devices but the TAG chip is 5v.
Adding 256K L2 cache will give between 10%-30% performance improvement, depending on application type.
Data chips (8 required):-
____________________________ __________ _______________________
|15/20ns SOJ SRAM 32Kx8 3.3v | Alliance | AS7C3256-20JC |
| | Alliance | AS7C3256-15JC |
| | Samsung | KM68V257J-20T |
| | Samsung | KM68V257J-15T |
| | Samsung | KM68V257J-17T |
| | IDT | IDT71V256SA20Y |
| | IDT | IDT71V256SL15Y |
| | Toshiba | TC55V328J-20(EL) |
| | Toshiba | TC55V328J-15(EL) |
| | Micron | MT5LC2568DJ-20T |
| | Micron | MT5LC2568DJ-15T |
| | ISSI | IS61LV256-20J |
| | ISSI | IS61LV256-15J |
| | | (NOT datecode 9451) |
|____________________________|__________|_______________________|
TAG Chip (1 required)
_______________________________________________________________
|15ns SOJ SRAM 32Kx8 5.0v | Alliance | AS7C164-15JCTR |
| | Samsung | KM6865BJ-15 |
| | Alliance | AS7C164-12JCTR |
| | Cypress | CY7C185-15VC |
| | Winbond | W24257AJ-15 |
| | IDT | IDT71256SA15Y |
| | Samsung | KM68657BJ-15T |
| | Samsung | KM68657CJ-15T |
|____________________________|__________|_______________________|
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Hint Category |
Memory | |
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Date Created |
02-02-96 | |
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Last Updated |
19-11-98 | |
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Revision Date |
19-11-99 | |
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Brand |
IBM PC | |
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Product Family |
PC 330, PC 350 | |
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Machine Type |
6576, 6586 | |
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Model |
Various | |
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TypeModel |
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Retain Tip (if applicable) |
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Reverse Doclinks |