Hardware Reference Guide www.hp.com 2-9
Hardware Upgrades
■ In any mode, the maximum operational speed is determined by
the slowest DIMM in the system. For example, if the system is
populated with a DIMM that is 333 MHz and a second DIMM
that is 400 MHz, the system will run at the slower of the two
speeds.
There are four DIMM sockets on the system board, with two sockets
per channel. The sockets are labeled XMM1, XMM2, XMM3, and
XMM4. Sockets XMM1 and XMM2 operate in memory channel A.
Sockets XMM3 and XMM4 operate in memory channel B.
DIMM Socket Locations
Item Description Socket Color
1 DIMM socket XMM1, Channel A Blue
2 DIMM socket XMM2, Channel A Black
3 DIMM socket XMM3, Channel B Blue
4 DIMM socket XMM4, Channel B Black
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