Ultra 450 (A20)
Enterprise 450 (A25)

Options 7002 / 7003 / 7004 / 7005 / 7043

501-2622	501-2480	501-5691	501-3136
32MB 5V ECC 60ns DIMM Option 7002	64MB 5V ECC 60ns DIMM Option 7003	64MB 5V ECC 60ns DIMM Option 7043	128MB 5V ECC 60ns DIMM Option 7004
501-4743	501-5896	501-6005	501-6056
256MB 5V ECC 60ns DIMM Option 7005	256MB 5V ECC 60ns DIMM w Gate Array Logic No Option	256MB 5V ECC 60ns DIMM w Gate Array Logic No Option	256MB 5V ECC 60ns DIMM w Gate Array Logic Option 7005

Memory Map

SOCKET	LABEL	INSTALL	BANK	DIMM#	ADDRESS
U1604 U1603 U1602 U1601	D D D D	4th 4th 4th 4th	3 3 3 3	3 2 1 0	c000 0000 - ffff ffff c000 0000 - ffff ffff c000 0000 - ffff ffff c000 0000 - ffff ffff
U1804 U1803 U1802 U1801	B B B B	2nd 2nd 2nd 2nd	1 1 1 1	3 2 1 0	4000 0000 - 7fff ffff 4000 0000 - 7fff ffff 4000 0000 - 7fff ffff 4000 0000 - 7fff ffff
U1704 U1703 U1702 U1701	C C C C	3rd 3rd 3rd 3rd	2 2 2 2	3 2 1 0	8000 0000 - bfff ffff 8000 0000 - bfff ffff 8000 0000 - bfff ffff 8000 0000 - bfff ffff
U1904 U1903 U1902 U1901	A A A A	1st 1st 1st 1st	0 0 0 0	3 2 1 0	0000 0000 - 3fff ffff 0000 0000 - 3fff ffff 0000 0000 - 3fff ffff 0000 0000 - 3fff ffff

Notes

1. Four DIMMs of the same size form a bank.
2. The installation sequence is AAAA, BBBB, CCCC, and DDDD.
3. Use the setenv memory-interleave OBP command to set interleaving.
4. The smallest DIMM size is used and the remaining memory is lost if interleaving is enabled and the bank sizes are different.

Reference

1. Ultra Enterprise 450 Server Owners Guide, 805-0429.
2. Ultra 450 Workstation Owners Guide, 805-0430.