Memory
Option #	Manufacturing Part #	Description	Previous Part #
X8021A-Z [S]	1GB (2 × 512MB DDR400/PC3200 ECC DIMM) Option, L
	594-1676	1GB (2 × 512MB DDR400/PC3200 ECC DIMM), L	n/a
	371-0071	512MB PC3200 DDR400 ECC registered DIMM, L	n/a
X8022A-Z [S]	2GB (2 × 1GB DDR400/PC3200 ECC DIMM) Option, L
	594-1677	2GB (2 × 1GB DDR400/PC3200 ECC DIMM), L	n/a
	371-0072	1GB PC3200 DDR400 ECC registered DIMM, L	n/a
X8023A-Z [S]	4GB (2 × 2GB DDR400/PC3200 ECC DIMM) Option, L
	594-1678	4GB (2 × 2GB DDR400/PC3200 ECC DIMM), L	n/a
	371-0073	2GB PC3200 DDR400 ECC registered DIMM, L	n/a
X8024A-Z [S]	8GB (2 × 4GB PC3200 DDR400 DIMM) Option, L
	594-4108	8GB (2 × 4GB DDR1-400/PC3200 ECC DIMM),	n/a
	371-1460	4GB PC3200 DDR1-400 ECC registered DIMM,	n/a
n/a	F540-6453 [F]	2GB (2 × 1GB) Memory FRU, L	n/a
n/a	371-0072	1GB PC3200 DDR400 ECC registered DIMM, L	n/a
n/a	F540-6454 [F]	1GB (2 × 512MB) Memory FRU, L	n/a
n/a	371-0071	512MB PC3200 DDR400 ECC registered DIMM, L	n/a
n/a	F540-6497 [F]	4GB (2 × 2GB) Memory FRU, L	n/a
n/a	371-0073	2GB PC3200 DDR400 ECC registered DIMM, L	n/a
n/a	F540-6838 [F]	8GB (2 × 4GB) Memory FRU, L	n/a
n/a	371-1460	4GB PC3200 DDR1-400 ECC registered DIMM,	n/a

NOTE: Memory must be installed in pairs. Pairs of different densities may be mixed.
NOTE: 4GB DIMMs (371-1460) require BIOS 36 included in Supplemental ISO Image 1.2.1. and Rear Top Cover EMI Gasket 343-0444-01.
NOTE: The entry-level single CPU standard configuration has only 2 memory slots that are usable; the other 4 memory slots only work if a second CPU is installed.

Table Legend
[F] = Field Replaceable Unit (FRU) [C] = Customer Replaceable Unit (CRU) [S] = Supported, but can no longer be ordered with this system [N] = No longer supported for this system Price = Price this Part