32bit or 64bit Windows 7 for a Quad Core Processor

Im just wondering if I would need to use a 32bit or 64bit Windows 7 with a Quad Core AMD processor. Please advise? :)

If you have 4gb of ram or more use x64.

For better help with problems, Can you post your specs.
Filling out System Specs
System Info - See Your System Specs

Dont Know What Hardware You Have..??
VistaForums SysInfo Tool - Vista Forums

I havent purchased the PC yet but I will copy the specs. Here they are:-

We have put together the perfect package for the home user wanting a AMD FX Bulldozer System to play Games, on the internet or do office style work.
Case: Galaxy 3 Gaming Case With Side Window and Blue LED Fans
Motherboard: Gigabyte 78LMT-S2P
CPU: AMD FX Quad Core
CPU Model: AMD Bulldozer FX 4100 3.6ghz Quad Core 8mb Cache
CPU Socket: AMD AM3 / AM3+
CPU Speed: 3.6 Ghz
Memory: 8gb DDR3 1600mhz Crucial Ballistix Sport
Hard Disk: 1tb Sata Hard Drive
Graphics Card: ATI Radeon 6450 1gb DDR3 with HDMI Hyper Memory Upto 2gb
PSU Size: 500 Watt Branded Power Supply

Features: 1x Gigabit Network Card,1x VGA Ports,1x DVI Port,2x PS/2 Ports,Sound Card,4x USB 2.0 ports
Rear Panel Connections: Front USB Ports,Gigabit Lan,USB 2.0,Front Audio Ports
Front / Top Case Ports: 2x USB 2.0 Ports,Headphone Jack,Microphone Jack

Operating System: No Operating System

As you have 8gb of ram, use x64.

As your new MOBO has a uEFI BIOS.
How to install Windows 64 bit on a uEFI BIOS:
UEFI (Unified Extensible Firmware Interface) - Install Windows 7 with
or
UEFI (Unified Extensible Firmware Interface) - Install Windows 8 with

Thank you very much theog, Ive not got that much knowledge with 64bit hardware and software but I will start to learn soon :)

You are welcome.