IC DRAM Cards

IBM DRAM Cards
Other DRAM Cards
Identifying Parity and Non-Parity Cards


IBM DRAM Cards

FRU P/N Size P/NP ID # Usable for
07G1415 4 MB P 06G9242, 40G0275, 40G1914 TP700/720, CL57( N27SX), 5538/5537
07G1416 8 MB P 06G9243
66G0094 16 MB P 66G6575, 66G0093, 66G8262 5538/5537, TP750C/Cs, TP755
84G5724 4 MB NP 84G5691 5538 (Disable parity check option).
5538-Z may not recognize Non-Parity.
5537-Z does recognize Non-parity.
TP330/340/345/360/730/750/755.
TP750/755
Disable parity check option before
installing non-parity memory.
Parity check is not available for TP755
Pentium models.
92G7237 4 MB NP
84G5725 8 MB NP 84G5694
92G7236 8 MB NP
84G5726 16 MB NP 84G5697
92G7424 16 MB NP


Other DRAM Cards

Mfg. Size P/NP P/N Notes
Fujitsu 8 MB P CA46006-6256 FMBNEM81, 002M36R4C4A0-08F0P5E
Fujitsu 8 MB NP
Fujitsu 16 MB P CA46006-6256 FMBNEM161, 004M36R2C4A0-08F0P5E
Fujitsu 16 MB NP CA46006-6270 FMVNEM161, 004M32R2C4A0-08F0P5E
Fujitsu 32 MB NP FMVNEM321,
AMBUS *1 16 MB P 436P DRAM MEMORY CARD
SUN *2 16 MB P 711501 ? ThinkPad 750/755, TH8D364000UA-7B
Kingston 16 MB NP KTM-TP360/16 "PRINCETON TB 973031" for TP360
Kingston 16 MB NP KFJ-NEM/16
Hagiwara 32 MB NP HMC-A032
Hagiwara 4-32 MB P Probably HMC-B0xx used for parity mem.
Century Micro 4-32 MB P COD-4M/8M/16M/32M -P
GreenHouse 32 MB NP JD32NF
Maxell 8 MB P DJ-8M-QA (4P.8L) 80 ns?
Maxell 8 MB NP DJ-8M-QA (4.8L) 80 ns?
Maxell 16 MB P DJ-16M-QA (4D.7L) 70 ns?
Maxell 16 MB NP DJ-16M-QA (4.7L)
Maxell 32 MB P DJ-32M-QA (4D.7L)
Maxell 32 MB NP DJ-32M-QA (4.7L)

*1 The Star-Spangled Banner is printed on the card.
*2 Toshiba America Electronics Components, Inc.
Memory cards with P/N written in bold letters are tested with PS/55E, 5538-Y/5537-Y.


Identifying Parity and Non-Parity Cards

Non-IBM cards

If you find figures like " 36M" or "36" other than figures indicating capacity, it may be Parity memory.

If you find figures like " 32M" or "32" other than figures indicating capacity, it may be Non-Parity memory.

IBM cards (example [P])

Parity DRAM cards are *thick black* while Non-parity cards are *gray*. There is no indications about Parity or Non-parity on the card. If you don't have FRU P/N handy, identify cards by their color.

TP700/720

Both models take Parity cards only. Do not got for Non-parity DRAMS. Maximum capacity per slot is limited to 8MB. If you pop a 16MB DRAM card in any slot, system will count to 12MB ( planar 4MB + half amount of installed card ) and then turn into reference. Auto-config, save config then reboot, memory count will stop at 4MB and you'll get 163 and 201 error. TP720 can accept Fujitsu FMBNEM81, CA46006-6256 parity memory. I think TP700/720 can also accept DJ-8M-QA( 4P.8L ) by Maxell.

PS/55E

As far as I can see, 5537 and 5538 can take both Parity and Non-Parity memory cards except 5538-Z. I myself have not yet confirmed it. At least 5537-ZAC can take both parity and non-parity. Some models have "Parity check disable option" in Easy Setup Menu and others are designed to use Non-Parity memory cards (Of course parity card can be used as Non-Parity memory. Parity bit of such cards may just ignored by the system).

Content created and/or collected by:
Louis F. Ohland, Peter H. Wendt, David L. Beem, William R. Walsh, Tatsuo Sunagawa, Tomáš Slavotínek, Jim Shorney, Tim N. Clarke, Kevin Bowling, and many others.

Ardent Tool of Capitalism is maintained by Tomáš Slavotínek.
Last update: 20 Jan 2024 - Changelog | About | Legal & Contact