Onus :
Oooh, no. And here is why: Heat. Sadly, this build won't last; I wouldn't give it six months. The non-modular Corsair "CX" units were built with some inferior Samxon capacitors that don't like heat and are known to fail early. Even without considering the radiant heat from the graphics card, you're running it at a high enough percentage of its capacity that it will cook. I also don't care for what all that [radiant] heat might do to the motherboard.
Will this HIS card fit in that case: http://www.newegg.com/Product/Product.aspx?Item=N82E16814161428 ? It exhausts its heat. You'd give up a chunk of performance, but 1) solve the heat problem and 2) allow for an optical drive and/or 8GB of RAM in the budget. The benchmarks show that frame rates are high enough that you're still going to get smooth 1920x1080 gaming out of it, plus you'll have something cooler and quieter that will still be running in a year or two, or three...
If the HIS won't fit, this EVGA FTW-version of the GTX660 will: http://www.newegg.com/Product/Product.aspx?Item=N82E16814130829. It costs more, but performs better than the HD7850, and still exhausts most of its heat.
Edit: I'm really happy to see m-ITX in a SBM. Without necessarily repeating it any time soon, I think a little refinement still merits discussion and maybe more testing.
Will this HIS card fit in that case: http://www.newegg.com/Product/Product.aspx?Item=N82E16814161428 ? It exhausts its heat. You'd give up a chunk of performance, but 1) solve the heat problem and 2) allow for an optical drive and/or 8GB of RAM in the budget. The benchmarks show that frame rates are high enough that you're still going to get smooth 1920x1080 gaming out of it, plus you'll have something cooler and quieter that will still be running in a year or two, or three...
If the HIS won't fit, this EVGA FTW-version of the GTX660 will: http://www.newegg.com/Product/Product.aspx?Item=N82E16814130829. It costs more, but performs better than the HD7850, and still exhausts most of its heat.
Edit: I'm really happy to see m-ITX in a SBM. Without necessarily repeating it any time soon, I think a little refinement still merits discussion and maybe more testing.
I strongly disagree, and do not share the same concern Onus. This PSU application is flipped to not be a case exhaust. Rather it is fed cool intake air through the enclosure's top PSU venting. And, under full system load it was outputting less than 50% of it's rating. Heat concerns were mainly just GPU related.
The Myst runs hot. A blower cooler or more miserly GPU would have been good, but really internal case tempers weren't much of a concern (factoring the components and mild overclocking). Notice the puny aluminum Intel cooler kept the Core i3 running cool. When you factor a couple more degrees ambient temps, plus a few more degrees internal case temps above ambient, yeah the Myst cooler takes off (in RPM). That's probably in part why some folks complain of its noise and others don't.
*** Late Edit here Onus, you may not see it. But I actually wanted to use a Rosewill Capstone 80 Plus Gold 450W modular in this build, and own two myself for similar builds. In fact I recommended that same PSU to Donny for his $1300 build but he prefers more reserve. My budget was tight, and the GPU forced me to select a PSU I've never used for an SBM. I don't think it is bad, especially as configured (as I explained above), but notice I didn't use it as an exhaust (which would have helped GPU temps and noise). I got into this in my rough draft but had to chop much text out to clean up my wordiness. Anyway, wanted to explain the PSU was a compromise, I just don't fear it's death like you mentioned.