System build for less than 1500

I agree on going with the Hyper 212 air cooler unless you really want to get nuts on OCing  

Ripjaws, good buy.

The Gigabyte P55 board you listed is a good board. However, take note that P55 boards generally do not work well with Crossfire. Depending on the particular board, the second PCI-E x16 can be crippled by the 3.0 USB and/or SATA 6gb/s. I'm not too sure on that ASUS, but AFAIK it's an issue with all P55 boards. The Gigabyte one though definitely only runs at x4 electrical on the second PCI-E x16 in Crossfire, so that eliminates it as a realistic CF board imo.

I agree on going with a 5850 or 5870 if your purpose is gaming. There are three things to consider here:

1) Get a more expensive motherboard to ensure you can use at least x8/x8 Crossfire down the road, and get a 5850.
2) Go with a cheaper board that still has 3.0 USB and 6gbs SATA and get a 5870, with no plan to CF later.
3) Go AMD and save even more money on a Quad and Motherboard. Get a 5870, with no plan to CF later.

Options 2 and 3 allow you to save $ now and reinvest in 2-3 years, if and when you feel the 5870 isn't up to it anymore and just get a new card. Option 1 will cost you more now but allows you to just try and find a cheap 5850 down the road (but don't wait too long, already 4870's are getting harder to find at reasonable prices).

So it just depends on which way you want to flex your budget. Personally if gaming is the focus, I'd just get an AMD Quad, OC that with the Hyper 212, Get the $90 Gigabyte UD3 motherboardboard with usb 3.0 and Sata 6s, and a 5870.

Oh and you can also drop down to an Antec Earthwatts 500 or 650W PSU (whatever is on sale, usually one of the two is) if you just use the 1 vid card.

Also, not sure how often you buy from NCIX. But make sure you use the manufacturer's part # on their product pages to pricematch! Use shopbot.ca and/or pricebat.ca and search using the product #. Will give you Canadian results and you use those links to PM on NCIX's checkout page. Can save a good chunk of coin doing this   Product has to be in stock at both stores though, and any 3% cash discounts don't work for PM (gotta use the reg or sale price).

Good luck!