All around new build with old parts $600-$750

[kwaneowong]

OBJECTIVE:
EXPECTED END OF 2012 SUMMER
DISPLAY W/ HDMI on 40" LCD TV
extensive GAMING (FPS, RACING, ACTION) and HOME THEATER
moderate 3D MODELLING, AUTOCAD and ADOBE CS
$600-$750

LOCATION:
TORONTO, preferably in store purchase or pick up
could do online shipping for less important parts
NCIX, CanadaComputer, Newegg.ca, Infonec

OWNED:
TV 1080p
SAPPHIRE HD5850 1GB (NOT PLANNING TO CF)
ANTEC 620W/ANTEC 750W
DVD COMBO

WANTED: (MID END BUILD)
ANTEC 302/HAF 912
i5 3550 (NOT PLANNING TO OC)
ASUS/ASROCK/GIGABYTE - P67/Z68/Z77 ($150-$200)
NOCTUA D14
CORSAIR XMS DDR3 1600 8GB
1TB HDD (NO SSD and will have external for extra storage)

So my question is if the 620W is enough for such build. And I need some advice on the mobo as well. I am not a fan of AMD, OCZ, MSI nor BIOSTAR. I picked CORSAIR because I have good experiences with it and might willing to try MUSHKIN or G.SKILL if it's much cheaper.

Any adivce will be much appreciated. Thanks a lot!!!!

 

[g-unit1111]

I use Corsair XMS RAM and even I'll admit that the reliability of it is questionable - G.Skill, Mushkin, and Crucial would be far better choices, IMO.

I think the D14 might be overkill using an HAF 912 - maybe go with a Noctua NH-U9B instead and invest that money elsewhere. Maybe in upgrading your case choice to a Fractal Design Arc MIDI or a Corsair Carbide 400R.