Last Minute Critique

Hello everyone! Probably gonna get these parts today, just wanted to know if there are any problems here

[PCPartPicker part list](http://uk.pcpartpicker.com/p/2p8Pgs) / [Price breakdown by merchant](http://uk.pcpartpicker.com/p/2p8Pgs/by_merchant/)

Type|Item|Price
:----|:----|:----
**CPU** | [Intel Core i5-2500K 3.3GHz Quad-Core Processor](http://uk.pcpartpicker.com/part/intel-cpu-bx80623i52500k) | £0.00
**CPU Cooler** | [Noctua NH-U12S 55.0 CFM CPU Cooler](http://uk.pcpartpicker.com/part/noctua-cpu-cooler-nhu12s) | £49.34 @ Scan.co.uk
**Memory** | [Patriot Viper 3 16GB (2 x 8GB) DDR3-1600 Memory](http://uk.pcpartpicker.com/part/patriot-memory-pv316g160c9k) | £109.27 @ CCL Computers
**Storage** | [Samsung 840 EVO 250GB 2.5" Solid State Drive](http://uk.pcpartpicker.com/part/samsung-internal-hard-drive-mz7te250bw) | £88.34 @ Amazon UK
**Video Card** | [Gigabyte GeForce GTX 780 3GB WINDFORCE Video Card](http://uk.pcpartpicker.com/part/gigabyte-video-card-gvn780oc3gd) | £365.99 @ Amazon UK
**Case** | [NZXT H440 (Orange/Black) ATX Mid Tower Case](http://uk.pcpartpicker.com/part/nzxt-case-cah440wm2) | £91.73 @ Scan.co.uk
**Power Supply** | [EVGA 850W 80+ Gold Certified Fully-Modular ATX Power Supply](http://uk.pcpartpicker.com/part/evga-power-supply-220g20850xr) | £92.28 @ Amazon UK
**Operating System** | [Microsoft Windows 7 Home Premium SP1 (OEM) (64-bit)](http://uk.pcpartpicker.com/part/microsoft-os-gfc02050) | £0.00
**Other**| ASUS P8Z68V_LX| Purchased For £0.00
| | **Total**
| Prices include shipping, taxes, and discounts when available | £796.95
| Generated by PCPartPicker 2014-06-15 15:05 BST+0100 |

This is actually a kind-of upgrade to my old system, just wanted to know if there would be any alterations you would make?

Be used for Heavy gaming, general use, AutoCad, and possibly video editing if I want to try it!

Explanation
-Re-using processor, MOBO, OS and hard drive
-Quiet and good performing cooler!
-Cheapest 1600mhz, CL9, Black ram I could find
-Very good GPU which will last
-Good quiet case with good airflow
-Good powersupply with room for lots of upgrades

Sorry this isn't a very in depth post, but any input would be appreciated!