HP dx5150 Informations techniques télécharger pdf (Page 176)

E–2 361685-001 Service Reference Guide, dx5150

Memory

DIMM Sockets

The system will automatically operate in single channel mode or a higher-performing dual

channel mode, depending on how the DIMMs are installed.

■ In single channel mode, always populate the XMM1 socket first. If you add a second DIMM

of a different memory size than the first, install it in XMM3. Otherwise, the system will not

operate.

✎

In single channel mode, the maximum operational speed is determined by the slowest DIMM in

the system. If the system is populated with a DIMM that is 266 MHz and a second DIMM that is

333 MHz, the system will run at the slower of the two speeds.

■ In dual channel mode, all DIMMs must be identically matched. If you are populating all four

DIMM sockets, you must either use identical DIMMs in all sockets or use identical DIMM

pairs in each pair of sockets, XMM1 and XMM2 black sockets and XMM3 and XMM4 blue

sockets. Otherwise, the system will not operate.

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 XMM3 operate in memory

channel A. Sockets XMM2 and XMM4 operate in memory channel B.

The system board shown below may be different from the one in your computer.

Item Description Socket Color

1 DIMM socket XMM1, Channel A Black

2 DIMM socket XMM2, Channel B Black

3 DIMM socket XMM3, Channel A Blue

4 DIMM socket XMM4, Channel B Blue

1 2 ... 171 172 173 174 175 176 177 178 179 180 181 182

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HP dx5150 Informations techniques Page 176