Technical information
137
For the latest product & technical information, refer to the Information Sources on pages 2 and 3.Updated 10/02/01
IBM XSERIES 370
xSeries 370 Memory
To t a l
System
Memory
Quantity of RDIMMs Added
Std Models
51 2 M B
(4 x 128)
128MB
(20L0245)
256MB
(20L0247)
512MB
(20L0249,
33L3149
7
)
1GB
(33L3056)
640 1 - - -
768 2 or 1 - -
1024 4 or 2 or 1 -
1280 6 or 3 - -
1536 8 or 4 or 2 or 1
1792 10 or 5 - -
2048 12 or 6 or 3 -
2560 16
2
or 8 or 4 or 2
2816 18
2
or 9 - -
3072 2 0
2
or 10 or 5 -
3328 22
2
or 11 - -
3584 24
2
or 12 or 6 or 3
4096 28
2
or 14
4
or 7 -
4608 - 16
2
or 8 or 4
512 0 - 18
2
or 9 -
5632 - 20
2
or 10 or 5
6144 - 22
2
or 11 -
6656 - 24
2
or 12 or 6
7680 - 28
2
or 14
4
or 7
8192 - 32
2, 3
or 16
3
or 8
3
870 4 - - 16
2
or 8
9728 - - 18
2
or 9
10752 - - 20
2
or 10
117 7 6 - - 2 2
2
or 11
12800 - - 24
2
or 12
13824 - - 26
2
or 13
B4
A1
B1
B2
B3
A2
A3
A4
Standard Mezzanine Board
Optional Mezzanine Board
Optional Cache
Coherency Filter
Cards
AB
Recommended order of
processor installation is:
Sockets A1, A3, A2, A4,
B1, B3, B2, B4
xSeries 370 ships with a single mezzanine board containing four Pentium III Xeon processor sockets with terminators in the
unoccupied sockets. An additional mezzanine board may be added, expanding the number of processor sockets to eight.
The two mezzanine boards are then linked through two cache coherency filter cards, one for each mezzanine board.
Option Content
xSeries 370 / Netfinity 8500R > 4-Way Enablement Kits
(P/N 28L4730 and P/N 28L4727)
•Support for 550MHz models only
•Required for installation of processors 5 . .. 8.
•One Processor Mezzanine Board
•Two cache coherency filter modules
•28L4730 economical 1X (256K entries)
•28L4727 high performance 4X (1M entries)
•Filters may be used with Mezzanine Expansion
Kit (P/N 10K2337)
Netfinity 4X Accelerator Filter (P/N 10K2335)
• Two cache coherency filter modules
• Requires Mezzanine Kit (P/N 10K2337)
Netfinity Mezzanine Expansion Kit (P/N 10K2337)
• One Processor Mezzanine Board
• Supports cache coherency filters from
the following options:
• P/N 10K2335
• P/N 28L4730
• P/N 28L4727
• Supports 700MHz and above processors
only
• Required when upgrading models
8681-4RY ... 6RY to 700MHz or above
• Required when adding fifth through eighth
processors rated at 700MHz or above
All installed processors must be identical in type, speed and
cache size. Upgrades may require a BIOS update. To obtain the
latest Flash BIOS, access www.pc.ibm.com/support and enter
machine “Type-Model” in Quick Path. Select “Downloadable files”
then “BIOS.”
A1 Socke
t
Memory Card A- Std
A9 Socket
A10 Socket
A11 Socket
A12 Socket
A13 Socket
A14 Socket
A15 Socket
A16 Socket
B9 Socket
B10 Socket
B11 Socket
B12 Socket
B13 Socket
B14 Socket
B15 Socket
B16 Socket
A2 Socket
A3 Socket
A4 Socket
A5 Socket
A6 Socket
A7 Socket
A8 Socket
B1 Socket
B2 Socket
B3 Socket
B4 Socket
B5 Socket
B6 Socket
B7 Socket
B8 Socket
Std RDIMM
Memory Card B- Optional
Std RDIMM
Std RDIMM
(J1-J16) (J1-J16)
Recommended order of RDIMM population for
optimum cooling: 1, 5, 9, 13, 3, 7, 11, 15, 2, 6, 10, 14, 4,
8, 12, 16.
Std RDIMM