This is my rig. What are the best improvements I can make for £150

PCPartPicker part list / Price breakdown by merchant

Type Item Price
CPU Intel Core i5-6600K 3.5GHz Quad-Core Processor £194.99 @ Amazon UK
CPU Cooler Noctua NH-D9L 46.4 CFM CPU Cooler £48.12 @ More Computers
Motherboard Asus Z170 PRO GAMING ATX LGA1151 Motherboard £110.34 @ Amazon UK
Memory Crucial Ballistix Sport 8GB (1 x 8GB) DDR4-2400 Memory £26.42 @ Ebuyer
Storage Samsung 850 EVO-Series 120GB 2.5" Solid State Drive £52.75 @ Amazon UK
Storage Western Digital Caviar Blue 1TB 3.5" 7200RPM Internal Hard Drive £40.96 @ CCL Computers
Video Card Sapphire Radeon R9 380 4GB NITRO Dual-X OC Video Card £168.84 @ CCL Computers
Case be quiet! Silent Base 800 (Orange) ATX Mid Tower Case £94.02 @ Amazon UK
Power Supply EVGA 600B 600W 80+ Bronze Certified ATX Power Supply £53.46 @ Amazon UK
Prices include shipping, taxes, rebates, and discounts
Total £789.90
Generated by PCPartPicker 2016-05-23 23:23 BST+0100

Go skylake with a 380.

/r/pcmasterrace Thread Link - uk.pcpartpicker.com