Motherboards are also referred to as system boards or main boards.
The OptiPlex GX150 was a desktop computer released by Dell in 2001. The motherboard that came standard with this model was the 38HRF, also manufactured by Dell. The 38HRF is no longer manufactured or sold by Dell, but is available for purchase from several web vendors.
Processor
The 38HRF was compatible with both Intel Pentium and Celeron processors. The socket type for the system board was PGA370. The Pentium III for this model had a level one internal cache of 32 kilobytes, which included a 16 KB data cache and 16 KB instruction cache. The level two integrated cache for the Pentium III Processor compatible with this motherboard was 256 KB. The Pentium III had an internal math coprocessor. The chipset for this model was Intel 815E.
Memory
The 38HRF had two sockets for DIMMs (dual inline memory modules). This motherboard was compatible with PC-133 SDRAM. Capacities supported by this system board were 64 megabytes, 128 MB, and 256 MB. The maximum amount of random access memory that could be supported by this motherboard was 512 MB. The front side bus speed for this board was 133 megahertz.
CMOS Battery
The CMOS battery for the 38HRF was a three-volt lithium coin cell battery, number CR2032. CMOS batteries are responsible for powering the system clock.
Form Factor
The 38HRF system board was intended for small desktop computers.
Ports/Interfaces
The 38HRF motherboard's input/output ports included two PCI expansion card slots, one AC adapter port, two ports for keyboard and mouse, a parallel port, one VGA monitor port, one network adapter, one microphone jack, one audio line-in port, one audio line-out port, two USB ports, one serial 1 port, and one serial 2 port.
Drive Bays
The 38HRF could support one 3.5-inch floppy disk drive, one enhanced integrated drive electronics hard drive (1-inch drive), and one 5.25-inch optical drive.
Video
The 38HRF system board had embeded Intel Dynamic Video Memory Technology (DVMT). The graphics memory was dynamically shared with system memory. The 38HRF could support an optional display cache of 4 MB 133 MHz SDRAM.
Audio
The 38HRF had an integrated analog audio controller, AC97 Codec. This audio controller featured Sound Blaster emulation.
Expansion Slots
The 38HRF motherboard had two PCI card expansion slots. The motherboard supported cards with 120-pin connectors and a maximum 32-bit connector data width.
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