Case upgrade and PSU question!

[The Halo Don]

Hello, I've decided to switch out my stock HP case for a HAF 912, and was wondering if my Motherboard would fit, I've never really heard of a uATX, thats why I ask.

HAF 912:
http://www.newegg.com/Product/Product.aspx?Item=N82E16811119233

Motherboard
N-Alvorix-RS880-uATX (Alvorix)
Manufacturer: Foxconn
Form factor: uATX
Chipset: AMD 785G
Memory sockets: 4 x DDR Front side bus speeds: 1333/1066/800MHz
Processor socket: AM Expansion Slots
1 PCI Express x16 slot for graphics card
3 PCI Express x1 slots
1 PCI Express x1 minicard slot

Here's a detailed system specs:
http://www.premiumgeeks.com/desktop/hp/hp-pavilion-p6774y-specs/

I will also be upgrading my GPU to a XFX 6770, and was wondering what PSU should I get?

Cooler Master 500w:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027

Antec 500w Earthwatts:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817371035

I would choose the Antec Instantly, but I fear that the cables may be too short.

 

[geofelt]

micro-atx is a smaller sized motherboard with only 4 rear expansion slots. It is a subset of a full atx dimension which has 7 slots, and should fit in any atx case, so you are good there.

Cases are a personal thing. May I ask what attracts you to the haf 912?

There are many attractive m-atx cases out there.
I use a silverstone tj-08E:
http://www.newegg.com/Product/Product.aspx?Item=N82E16811163058

AMD wants a 540w psu with a 6 pin pci-e connector.
http://www.amd.com/us/products/desktop/graphics/amd-radeon-hd-6000/hd-6770/Pages/amd-radeon-hd-6770-overview.aspx#3

Either psu you listed would do the job.
I would not worry about cable lengths.
On occasion, a bottom mounted psu may have to stretch over the motherboard to reach the 4 or 8 pin cpu power spot.
In the unusual event that one cable is short, there are extenders available for low cost.

You might also look at the corsair 500w unit:
http://www.newegg.com/Product/Product.aspx?Item=N82E16817139027

 

[The Halo Don]

Best answer selected by The Halo Don.