HP xw4300 Quickspecs page 17

QuickSpecs
Memory
Intel 955X Express chipset
DDR2 SDRAM ECC MEMORY
Only unbuffered DDR2 DIMMs are supported and must be either x8 or x16 width. Memory upgrades are accomplished by
adding DIMMs of the same or varied sizes. This chart does not represent all possible memory configurations. The Intel 955X
chipset supports ECC 667 MHz (PC2-5300) DDR2 memory or non-ECC and ECC 533 MHz (PC2-4300) DDR2 memory.
For best performance the total amount and type of memory loaded into Channel A and Channel B should be the same. If it is
not, your computer will see all the RAM installed but will run the memory controller at a lower performance mode. Although
not required, for best performance add the memory in pairs rather than as a single DIMM (two 512 MB DIMMs will have
better performance than a single 1 GB DIMM). Also, add the memory into both channels (e.g. one in socket 1 and one in
socket 3) to take advantage of dual channel performance. If you have unused slots within a channel, make them socket 2
and socket 4. This provides the best margin for the memory bus.
CAUTION:
Mixing speeds will mean that the memory runs at the speed of the slowest DIMM.
Do not mix ECC and non-ECC memory. The system will not boot if ECC and non-ECC DIMMs are mixed.
Do not mix single-sided and double-sided DIMMs. Both sides of a double-sided DIMM must have the same memory size.
Each rank (side) of the DIMM must be the same size.
MAXIMUM MEMORY
Supports up to 8 GB of ECC DDR2 533 MHz or 4 GB of DDR2 667 MHz SDRAM
POSSIBLE MEMORY CONFIGURATIONS
Not all memory configurations possible are represented below.
DIMM Size
256 MB
(single channel performance
configuration)
512 MB
1 GB
1.5 GB
2 GB
2 GB
4 GB
4 GB
6 GB
8 GB
1
256 MB
256 MB
512 MB
256 MB
1 GB
512 MB
1 GB
2 GB
1 GB
2 GB
DA - 12260 Worldwide — Version 22 — May 25, 2007
HP xw4300 Workstation
Slot
2 3
256 MB
512 MB
512 MB 256 MB
1 GB
512 MB 512 MB
1GB 1 GB
2 GB
2 GB 1 GB
2 GB 2 GB
4
512 MB
512 MB
1GB
2 GB
2 GB
Page 17