Specifications

1-2 ES45 Owner’s Guide
1.1 Model Differences
The AlphaServer ES45 has four different models (Models 1B, 2, 2B, and 3B).
Table 1–1 describes the model differences in detail.
Table 1–1 ES45 Model Summary
Model 2 Model 1B Model 2B Model 3B
I/O Slots
10 7 10 10
33 MHz PCI slots
66 MHz PCI slots
4X AGP slots
4
6
0
2
4
1
4
6
0
8
2
0
Hot-swapslots 7477
Power supplies (min/max) 2-3 1-3 1-3 1-3
Power supplies
Watts
H7906-A9
720
3X-H7514-AA
1080
3X-H7514-AA
1080
3X-H7514-AA
1080
Memory (min/max) 1GB-32GB 1GB-16GB 1GB-32GB 1GB-32GB
Memory option*
4GBoption
(Same for all other mem-
ory options)
MS620-DA
Low Power
DIMM
MS620-DB
Higher power
DIMM
MS620-DB
Higher power
DIMM
MS620-DB
Higher power
DIMM
Memory Channel maxi-
mum I/O space (CCMAB-
AA) Setting must be same
for all members of cluster.
See Quickspecs Memory
Channel configuration
notes at:
http://www.compaq.com/
alphaserver/es45/
128K 128K 128K
512K
or
128K
* For Models 1B, 2B, and 3B the 3X-H7514-AA power supply is required to meet additional DIMM
power requirements.