No comparison go for the P55 http://www.bestdirect.ca/products/219334/Gigabyte/GA_P5...
Lol! i know what's wrong with that particular H55 its the cheapest board they make and has only two dimms.
The proper comparison is the H55M-UD2H which is the P55M-UD2's H55 counterpart.
I have one it's nice paid $85 for it all in.