Configuring Memory on the HP Business Desktop dx5150.

Memory Type and Speed

Supported Memory Types

The dx5150 HP Business Desktop supports industry-standard 184-pin unbuffered DDR I SDRAM

DIMMs, designed with 128Mbit, 256Mbit, 512Mbit, and 1Gbit memory technologies. ECC is not

supported.

Supported Memory Speeds

The dx5150 HP Business Desktop ships with memory that meets the PC3200 specification, which runs

at a memory bus speed of 400 MHz. PC3200 is the recommended memory speed/type for this

system. However, it will also operate with PC2700 (333 MHz) or PC2100 (266 MHz) memory. The

system will set the memory bus to the speed of the slowest memory installed. Therefore, while memory

speeds can be mixed, this would not result in the optimum performance.

Graphics Memory Allocation

The RADEON XPRESS 200 graphics integrated on the system board uses part of the main system

memory for its video frame buffer, texture cache, and other graphics rendering functions. This memory

is allocated at boot time, and is not available for use by the operating system. By default the amount

of memory allocated to graphics is 64 MB. Thus, a system with 512 MB of main memory installed will

have 448 MB available for use by the operating system and applications, and 64 MB for the

graphics subsystem.

The amount of memory reserved for the integrated graphics can be set to 16 MB, 32 MB, 64 MB or

128 MB. To change the graphics memory allocation, access the BIOS Setup utility at boot time by

hitting the F10 key when prompted. Select the Advanced Chipset Features menu (4th item down).

Change the value of UMA Frame Buffer Size to the desired setting, then save changes and reboot.

If a PCI Express graphics card is added, the integrated graphics will automatically be disabled, and

no graphics memory will be allocated.