PCs and Macs are either single-core or multicore, depending on the number of processors they house. Videographers don't refer to software as "multicore" or "multiprocessor," but rather "multithreaded," which refers to an application's ability to split work among different processors. The author tested three systems, all from HP. The first was a dual-core Core 2 Duo-based 8710p notebook running at 2.2GHz. The next was a quad-core xw4600 Workstation based on the QX6850-core 2 Extreme Processor quad-core running at 3GHz. The third was an eight-core xw8400 workstation running dual processor, Quad-Core Xeon X5355s at 2.66 GHz. A quick glance at the processor utilization graphs in Windows Task Manager on all three systems tells the story.