Me and my Boss looked up a computer, but I didn't get a good look at the picture. He is a partner to the website so he gets a discount, and only those with certain credentials get in (I don't meet them

). But I still have the specs, but no idea if the case is big enough for the graphics card I have.
Specs are as follows
Asus Essentro Desktop PC
3rd Gen i5 3.0 GHz Processor
8 GB Ram
1 TB Hard Drive
Windows 7 Pro 64 Bit
$615-$625 USD including tax and shipping.
Does anyone know the size of the case that comes with this? Would it be big enough to hold a Nvidia GT8800?
I seen this other computer, (link below) just browsing and wanted to know if it would be good enough / upgradeable.
http://www.tigerdirect.com/applications/searchtools/item-details.asp?EdpNo=2546170&csid=Is it good for skyrim/Farcry 3 on high settings? What components stand out to you as being good/bad etc. And (for both computers) what graphics card do you recommend me upgrade to from the Nvidia GT8800?
I just wanted to get some advice from the tech gurus of these forums, since the time is looming ever closer for me to get my computer .

Edit:
Or would it be better for me to get this one?
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=8182698&csid=_61