Is this PSU enough for my build?

WeeMan100

Honorable
Feb 7, 2014
21
0
10,510
Hi all,

After a lot of research i've settled on the below build but my only question left is around the PSU - is the 550W going to be enough considering i'm only going to OC to around 4.0Ghz - 4.2Ghz and don't plan to crossfire.

PCPartPicker part list / Price breakdown by merchant / Benchmarks

CPU: Intel Core i5-4670K 3.4GHz Quad-Core Processor (£161.99 @ Aria PC)
CPU Cooler: Cooler Master Hyper 212 EVO 82.9 CFM Sleeve Bearing CPU Cooler (£25.44 @ Aria PC)
Motherboard: Gigabyte GA-Z87-HD3 ATX LGA1150 Motherboard (£79.01 @ Amazon UK)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory (£62.38 @ Ebuyer)
Storage: Kingston SSDNow V300 Series 120GB 2.5" Solid State Disk (£47.99 @ Aria PC)
Storage: Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive (£42.99 @ Amazon UK)
Case: Zalman Z9 Plus ATX Mid Tower Case (£44.99 @ Amazon UK)
Power Supply: XFX 550W 80+ Bronze Certified ATX Power Supply (£44.98 @ Amazon UK)
Optical Drive: Samsung SH-224DB/BEBE DVD/CD Writer (£11.99 @ Ebuyer)
Operating System: Microsoft Windows 8 (OEM) (64-bit) (£74.67 @ Ebuyer)
Wireless Network Adapter: TP-Link TL-WDN3200 802.11a/b/g/n USB 2.0 Wi-Fi Adapter (£16.80 @ Amazon UK)
Total: £613.23
(Prices include shipping, taxes, and discounts when available.)
(Generated by PCPartPicker 2014-03-15 23:21 GMT+0000)

I've not listed a graphics card as i'm putting in a second hand Radeon HD 5850 1gb for now until i settle on a higher spec one.