The ThinkCentre 1GB (73P4984) and 2GB (73P4985) PC2-5300 DDR2-667 UDIMM Memory offers:

• Maximum data transfer rate of up to 5,300 MBps
• 240-pin UDIMM with gold-plated leads
• Serial presence detect and decode functions

Notes:

1. PC2-4200 and PC2-5300 memory can coexist on one system, but will operate at PC2-4200 speed.
2. Data transfer rate may vary based upon many factors and is often less than the maximum possible.

• PC2-5300 DDR2 SDRAM memory upgrades -- The 5300 is a figure derived from twice the memory-side bus clock frequency (333 MHz x 2; data transfers can occur on both edges of the clock) times the module data width (64 bits / 8 bits/byte = 8 bytes) = 5,300. This is the maximum data rate; the units are MBps.
• Column Address Strobe (CAS) Latency (CL) of 5 (memory bus clock cycles) for PC2-5300 memory.
• Non-parity mode organized as 32M x 64, and 64M x 64, and 128M x 64 respectively.
• Serial presence detect with Serial EEPROM.
• 240-pin JEDEC/EIA standard UDIMM interface.
• Gold-plated leads.

• Approximate height:
  • Single sided: 2.7 mm (0.11 in)
  • Double sided: 4.0 mm (0.16 in)
• Approximate width: 133.4 mm (5.25 in)
• Approximate depth: 30.0 mm (1.18 in)

3 year - Customer Replacement Unit (CRU) Service

• 1GB memory:
  • Single-pack (individual):
    • Announce date: 28 Jun 2005 (Worldwide)
    • Availability date: 28 Jun 2005 (Worldwide)
  • 25-pack [51J0501] (1 year - CRU service):
    • Announce date: 17 Mar 2009 (Worldwide)
    • Availability date: 20 Mar 2009 (Worldwide)
    • Effective withdrawal date: Oct 2011
  • 2GB memory:
    • Single-pack (individual):
      • Announce date: 26 Sep 2006 (Worldwide)
      • Availability date: 29 Sep 2006 (Worldwide)
    • 25-pack [51J0547] (1 year - CRU service):
      • Announce date: 17 Mar 2009 (Worldwide)
      • Availability date: 20 Mar 2009 (Worldwide)
      • Effective withdrawal date: Mar 2012

This option is supported on the following:

• ThinkCentre A55 (type 8705, 8706, 8972, 8975, 8982, 8985, 8994, 9265)
• ThinkCentre A60 (type 8700, 8979, 8991, 9269, 9283, 9383, 9631)
• ThinkCentre M55 (type 8009, 8010, 8011, 8012, 8791, 8792, 8793, 8794, 8795, 8796, 8797, 8798, 8799, 8800, 8801, 8802, 8803, 8804, 8805, 8806, 8807, 8808, 8810, 8811)
• ThinkCentre M55e (type 9278, 9279, 9288, 9379, 9380, 9389, 9632, 9637)
• ThinkCentre M55p (type 8792, 8794, 8796, 8798, 8800, 8802, 8804, 8806, 8808, 8811)
• ThinkCentre M57e (type 7783, 9356, 9357, 9439, 9481, 9482, 9487, 9488, 9489, 9622, 9948, 9952)

Note: Some configurations may not be compatible.

• 1GB or 2GB PC2-5300 DDR2-667 SDRAM UDIMM memory or 25-pack memory module (1GB or 2GB)
• Publication