Planet Hardware heeft een review gepost van een Dual Celeron 450A op een Epox KP6-BX dual processor moederbord. Best wel heftige stuff, kijk maar.
Intel's Celeron processor was never meant to be setup in a multiprocessor configuration, in fact, it is completely disabled by default. So to get the processor to work in a dual configuration, up until now, you would have to solder wires to the processor, and hope you didn't mess anything up, otherwise your processor could be fried. Setting up a dual processor Celeron configuration become utterly simple, with the arrival of Socket-370 Celerons and Slotket adapter cards. Slotket cards allowed for all of the dual processor configuration mess to be taken care of already, and built into the adapter card with no modifications for the user, and since than Dual processor Celeron configurations have become almost mainstream.
In all fairness, Intel does have good reasons why they did not enable multiprocessing capabilities for the Celeron by default. Simply put, most Dual processor configs are used for servers, and servers eat up processor cache like no one's business. In comparison, the Celeron has 128K of Level2 cache, whereas Intel's server-aimed Xeon processor has up to 2 MB of L2 cache, 16 times more L2 cache. There have been reports and quotes around the internet that a Celeron-based dual processor rig can outperform a similar Xeon configuration, but simply it's not true. In any real software that is meant to be used on servers, like high end webservers or datacenter software, would run the Celeron over in it's tracks.