Compaq DC5750 Desktop

The HP Compaq dc5750 comes in either a microtower configuration or the desktop orientation that we tested. HP calls the latter model a "small form factor" system, but it's nearly identical in size to Dell's desktop case. It's moderately attractive, with horizontal black fins and some shiny black pieces.The dc5750 ($1251 as of 05/09/2007) uses small, traditional fans inside--one in the power supply, located against the back of the case, and one mounted on top of the CPU's heat sink. The HP uses an air scoop to channel airflow over the heat sink. The system is reasonably quiet, though not nearly as quiet as the Dell OptiPlex 740 we tested at the same time. HP's off-the-shelf fans will likely cost less than Dell's, however, should you need to replace them out of warranty. The Athlon 64 X2 processor used in this PC can take advantage of AMD's Cool 'n' Quiet technology, which allows the PC to adjust the speed and voltage to meet the user's needs. AMD says that Vista systems can take advantage of the technology without a driver, whereas XP systems require one.