Compaq dc7100 HP Compaq dc71xx and dx61xx Series Business Desktop Computers Te - Page 38

System Overview 2.4 System Architecture The systems covered in this guide feature an architecture based on the Intel Pentium 4 processor and the Intel 915G chipset (Figure 2-11). These systems allow processor upgrading with the Intel Pentium 4 family and offer flexibility in expansion capabilities. All systems covered in this guide include the following key components: ■ Intel Pentium 4 with Hyper-Threading technology, 32-KB L1 cache and 1-MB L2 cache. ■ Intel 915G/GV chipset - Includes 82915G or 82915GV GMCH north bridge and 82801 ICH6 south bridge including an integrated graphics controller, dual-channel DDR1 or DDR2 SDRAM controller, serial and parallel ATA controllers, USB 2.0 controller, and PCI controller supporting PCI 2.3 devices. ■ SMC 47B397 super I/O controller supporting PS/2 keyboard and mouse peripherals ■ AD1981B audio controller supporting line in, speaker out, and headphone out ■ Broadcom BCM5751 10/100/1000 network interface controller The 915G/GV chipset provides a major portion of system functionality. Designed to compliment the latest Intel Pentium 4 processors, the chipset serves the processor through a 800-MB Front-Side Bus (FSB). Communication between the GMCH and ICH6 components occurs through the Direct Media Interface (DMI). The SFF, ST, MT, and CMT form factors use the integrated graphics controller of the 82915G that may be upgraded through a PCI Express x16 graphics slot. All systems include a PCI 2.3 slot, and feature as standard a serial ATA (SATA) hard drive with support for legacy parallel ATA 100 devices including a MultiBay device. Table 2-2 lists the differences between models. Model Chipset Memory sockets DDR2 models? Graphics upgrade PCI Express x16 graphics slot? PCI Express x1 slot? Serial / parallel ports SATA interfaces Table 2-2. Architectural Differences By Form Factor USDT SFF ST MT 915GV 915G 915G 915G 3 4 4 4 No Yes Yes Yes PCI 2.3 card PCI-E or PCI-E or PCI-E or only PCI 2.3 card PCI 2.3 card PCI 2.3 card No Yes [1] Yes [1] Yes No Optional [2] 1 Yes [1] Standard [3] 2 Yes [1] Standard [3] 2 Yes Standard [3] 4 CMT 915G 4 Yes PCI-E or PCI 2.3 card Yes Yes Standard [3] 4 Notes: [1] Slot not accessible if PCI 2.3 full-height riser is installed. [2] Requires adapter. [3] 2nd serial port requires adapter. 2-22 361834-002 Technical Reference Guide