To coincide with the launch of the Core 2 Duo and Core 2 Extreme processors, many manufacturers released new or updated motherboards to support Intel's cutting edge CPU. Over the past few months, we've taken a look at a handful of these motherboards, including products based on chipsets from Intel as well as NVIDIA. Today, however, we're going to focus on a trio of boards all based on Intel's current flagship chipset for the Core 2 and Pentium D, the 975X Express.