I had a bit of a scare with the motherboard socket pins, which got bent during the CPU install even though I did things properly. After I confirmed Newegg wouldn't accept a RMA on it, I bent the pins back into place myself and (shockingly) everything is working fine. I wanted a motherboard with built-in Bluetooth and Wifi, even though this PC will almost always have a wired LAN connection, because of potential Wifi Direct features and because I didn't want a dongle anymore for Bluetooth like I've used in the past.
The current case is temporary, but works for now. It's a cube case, but I'd prefer something not nearly as tall, that instead uses a PCIe riser for the GPU. Also, I hate the part silver panel on the front of the case. Still, the black slim slot loading drive adapter in the 5.25 bay does fit well, and it gave me a chance to drill a tiny hole in the adapter's aluminum front plate to put my IR adapter behind.
Anyway, the 450W is more than enough for this system, which is using ~330W (according to my Kill-A-Watt) while running Furmark and Prime95 together. It idles at about 30W. This is awesome considering my previous system (a Q6600 / AMD 6850) idled at around 160W.
I really wanted the GTX780 for a few reasons, even though it's probably slightly overkill. One is for gaming in stereoscopic 3d, which I still do occasionally and so I wanted extra power there. But also, I really like the Titan-style cooler for a smaller case, since it doesn't just recirculate air inside the case, but blows it out the back.
I do apparently have an issue with a USB 3.0 flash drive (not the bug that Intel is talking about, but something different), but my other two USB 3.0 drives (one flash drive, one hard drive) work fine. I've seen it with this drive on one other computer (both this one and that one use a UEFI and not a BIOS so I wonder if it's something with that), but somehow when I try plugging in the drive before boot, or when I try plugging it in while already in the UEFI settings, all USB peripherals such as my keyboard and mouse are no longer detected. But like I said, I'm inclined to think that it's something with the specific drive and not a motherboard issue.
I'm not really a fan of the Bluetooth chip they used, though. It's not generic enough for me to update with Broadcom's own drivers (I instead get a response to check with the OEM for a driver update) and it doesn't work with Microsoft's built in Bluetooth drivers (even in Windows 8). Asrock's drivers are slightly older. Plus, I've got a couple different Bluetooth keyboards and all of them are getting disconnected pretty frequently (and then there's a driver popup on the desktop that temporarily displays a message about starting Bluetooth services).
Anyway, working great so far.