Where to find a good quiet power supply for overclocking system

I have almost created my new build with the below components:

• RAMPAGE IV GENE: Asus ROG, X79, DDR3-1866, 2xSATA3, USB 3.0, GBLAN, mATX
• Intel Core i7-3820, 3.6 GHz, 10MB, LGA2011, BOX
• DDR3 Corsair Vengeance Red 16GB (2x8GB) 1866MHz CL10 1.5V
• GeForce GTX 680 2 gb

I have not yet decided the psu and I want someone to suggest me the same, I will be overclocking the system so i want to have a quiet power supply. I also wanted to know form where can I find it. Any help regarding the same will be highly appreciated.

You can get anyone from the below ones, you can get them from newegg and I think that a 750 watt psu will be enough for handling your Intel Core i7-3820 and GeForce GTX 680:

OCZ ZT Series 750W Fully-Modular 80PLUS Bronze High Performance Power Supply compatible with Intel Sandy Bridge Core i3 i5 i7 and AMD Phenom - $109

Features:
750W Continuous Power with Single Strong +12V Rail
ATX12V V2.2 Compatible
80 PLUS Bronze Certified
Ultra-Quiet 140mm Fan
Fully Modular design
Premium capacitors and superior protection

NZXT HALE82 HALE82-750-M 750W ATX12V / EPS12V SLI Certified CrossFire Ready 80 PLUS BRONZE Certified Modular Power Supply - $119

Features:
80+ Bronze Certification
100% Japanese Capacitors
120mm Two-Ball Bearing Fan
Strong Single +12V Rail
Modular Design

I think that “CORSAIR Enthusiast Series TX750 V2 750W ATX12V v2.31/ EPS12V v2.92 80 PLUS BRONZE Certified Active PFC High Performance Power Supply”. I have been using CORSAIR psu from a long time and It has never let me down, I have been overclockign my system with a CORSAIR 550 watt psu, since you are having a GeForce GTX 680 2 gb I think you should better go for a 750W one.

Specification:

• Type-ATX12V v2.31/ EPS12V v2.92
• Maximum Power-750W
• Fans-1
• PFC-Active
• Main Connector-20+4Pin
• +12V Rails-Single
• PCI-Express Connector-4 x 6+2-Pin
• SATA Power Connector-8
• SLI-Ready
• CrossFire-No
• Modular-No
• Efficiency-Up to 85%
• Energy-Efficient-80 PLUS BRONZE Certified
• Over Voltage Protection-Yes
• Input Voltage-90 - 264 V
• Output-+3.3V@30A, +5V@30A, +12V@62A, -12V@0.8A, +5VSB@3.0A
• MTBF->100,000 Hours
• Approvals-UL, CUL, CE, CB, FCC Class B, TÜV, CCC, C-tick
• Dimensions-5.9"(W) x 3.4"(H) x 6.3"(L)
• Weight-5.51 lbs.

I have recently bought “NZXT HALE90 80 Plus Gold 750 Watt Power Supply with Modular Cable HALE90-750-M (White) “from amazon, it is costly than the ones that have been mentioned here but it is quite worth, You can get it for $137. As far as the feature is concerned it supports latest INTEL and AMD CPUs like Corei7, i5, AMD Phenom II X4, X3 as well as GPU’s. It has a single +12V rail for maintaining the stability and High quality Capacitors for lasting longer. It is said to be Ideal for latest DX11 GPUs.

If you are looking out for a cheap one then you can go for “Ultra LSP750 750-Watt Power Supply - ATX, SATA-Ready, SLI-Ready, 135mm Fan, Lifetime Warranty w/ Registration “ else go for CORSAIR Enthusiast Series TX750 V2 750W.

Technical specs:

• 750W Wattage
• SLI/CrossFire Ready
• 78% Energy efficiency
• 135mm Fan
• 20+4 Pin Connector

I think the best option will be “CORSAIR Professional Series Gold AX750 (CMPSU-750AX) 750W ATX12V v2.31 / EPS12V v2.92 80 PLUS GOLD Certified Modular Active PFC Power Supply” I think it is costliest amongst all but it is worth. It supports latest ATX12V v2.31 and EPS12V v2.92 standard and is also backward compatible with ATX12V v2.2 and ATX12V v2.01 system. It is an 80 PLUS Gold certified power supply for providing better efficiency and reducing electricity bill. it has an ultra-quiet 120mm San Ace fan from Sanyo Denki with a 4 x 6+2-pin PCI-E connectors.