Compaq DC7600 HP Compaq dx 7200 and dc7600 Personal Computers, Technical Refer - Page 34

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 945G chipset (Figure 2-14). 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 945G chipset - Includes 82945G GMCH north bridge and 82801 ICH8 south bridge including an integrated graphics controller, dual-channel DDR2 SDRAM controller, serial and parallel ATA controllers, USB 2.0 controller, and PCI controller supporting PCI 2.3 devices. ■ SMC SCH5307 super I/O controller supporting PS/2 keyboard and mouse peripherals ■ ALC260 audio controller supporting line in, line out, microphone in, and headphones out ■ Broadcom BCM5752 10/100/1000 network interface controller The 945G chipset provides a major portion of system functionality. Designed to compliment the latest Intel Pentium 4 processors, the chipset serves the processor through a 533/800/1066-MB Front-Side Bus (FSB). Communication between the GMCH and ICH8 components occurs through the Direct Media Interface (DMI). The SFF, ST, MT, and CMT form factors use the integrated graphics controller of the 82945G that may be upgraded through a PCI Express x16 graphics slot. All systems include at least one PCI 2.3 slot, and feature as standard a serial ATA (SATA) hard drive. The USDT models feature support for a MultiBay device through a legacy parallel ATA 100 interface. Table 2-3 lists the differences between models. Table 2-3. Architectural Differences By Form Factor Model USDT SFF ST MT Memory sockets 3 4 4 4 Graphics upgrade PCI 2.3 card only PCI-E or PCI-E or PCI-E or PCI 2.3 card PCI 2.3 card PCI 2.3 card PCI Express x16 graphics slot? Yes [1] Yes [2] Yes [2] Yes PCI Express x1 slot? No Yes [2] Yes [2] Yes Serial / parallel ports Optional [3] Standard [4] Standard [4] Standard [4] SATA interfaces 1 2 2 4 CMT 4 PCI-E or PCI 2.3 card Yes Yes Standard [4] 4 Notes: [1] Supports only an ADD2 card in the reverse-layout. [2] Slot not accessible if PCI 2.3 full-height riser is installed. [3] Requires adapter. [4] 2nd serial port requires adapter 2-18 www.hp.com Technical Reference Guide