Differences between GPUs?

eh they are both kinda same.. choose the one you like the most, again they have same performances : stream processors 1280, 256 Bit, Core Clock 1050 MHz, etc
 
Yeah they both also have dual fans, I guess get it from the store you like most since they are the same price as well.

Actually Scan doesn't have that card in currently "Item currently awaiting an ETA. ", So the one from Novatech is likely the best choice.
 



Would it work with my build?
 
Yes, so long as your hard drive isn't directly behind or rather in front of it.

Your case has 230mm of space with a hard drive in front of the video card and 330 without one. The Gigabyte is 280 mm in length.
 
True the Twin Frozr has 5 heat pipes versus 3 on the other MSI. So the cooler is superior to it's non TF brother.

But the Gigabyte has superior performance in games thanks to it's higher OC and is quieter and cooler than the Twin Frozr as seen below

Temps Gigabyte
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Temps MSI Twin Frozr
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Edit: Actually the Twin Frozr is pretty darn hot in comparison and louder to boot.

Noise
Gigaybyte
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MSI Twin Frozr
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