New gaming rig w/ aftermarket cooler help

I know this is one of many comp build threads but i would greatly appreciate any feedback on this before I clicky buy button and drop a wad of cash that I have been saving for about a year.

Eventually this would be a xfire machine - heavy gaming - but just starting with 1x 4870. I read people have success using the aftermarket cooler - arctic cooler on it too. Any opinions on that?

I chose a large roomy case. Decent psu to get me through the long haul (future proofing this one) - Went with Vista 64bit, good choice?

I chose to buy an extra 120mm scythe fan to use with the Xigamatek.

I even heard some people have attached like an 80mm fan to the gpu arctic cooler heatsink with twisty ties. I am more concerned about noise more than heat actually. Heat is a concern but noise is more important - wife hates a loud machine...


Thermaltake Armor Series
Seagate Barracuda 320GB
CORSAIR CMPSU-750W Power Supply
OCZ Platinum 4GB (2 x 2GB)DDR21066 (PC2 8500)
GIGABYTE GA-X48-DS4 LGA 775 Intel X48
Intel Core 2 Duo E8500 Wolfdale 3.16GHz
Microsoft Windows Vista Home Premium SP1 64-bit English for System Builders 1pk DSP OEI DVD
Scythe S-FLEX SFF21F 120mm Case Fan
XIGMATEK HDT-S1283 120mm Rifle CPU Cooler
XIGMATEK ACK-I7751 Retention Bracket
ARCTIC COOLING ACCELS1 Rev 2 VGA Cooler
SAPPHIRE Radeon HD 4870