On Pricewatch in the system memory section, you can get one 512mb stick of ddr400 for $54, but for 1gb of matched ddr400 the price jumps to $234. Why does the price jump $100 just for testing the ram? Is there anywhere I can find a gig of tested ddr400 for cheaper than $234? Couldn't I just buy two identical 512mb sticks from the same vendor and get the desired dual channel operation?