Gigabyte's GA-EX58-UD3R is one of the most affordable Core i7 motherboards, but you wouldn't know from using it. It differs from some of its more expensive relatives primarily by having a single RJ45 port and 4 RAM slots vs. the 6 found on higher-end boards. Neither of these is an issue for me, so the board doesn't feel like a compromise.
In every other way, it feels like a high-end board. There are more SATA connections than I can reasonably use, a comfortable surplus of USB ports, solid capacitors, and a boatload of BIOS features I'll probably never use. It has a second BIOS, which may come in handy if you accidentally mess up a BIOS update.
In use, it's been fast and stable with 6GB of OCZ DDR3 1333 RAM. Works well with Fedora 11 so far, hopefully this will continue to be true.
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