Well I have decided to upgrade my system. I've had it since 2011. So I've bought an ASRock B450 PRO 4 motherboard, a Ryzen 5 2600 CPU and 2x 16GB of cheap 2133mhz DDR4. My old system was an i5-2500k @ 4.3 with a Gigabyte Z77-D3H motherboard and 4x 4GB of DDR3. I've had a look on eBay and £ 100 seems a fair price for my old CPU, Motherboard and RAM.