PC Upgrade Advice, Budget:£300

Brut_Man

Honorable
Jul 22, 2012
17
0
10,510
Basically I am currently using a pre built system that I bought a few years ago, since then I have upgraded it slightly with a new graphics card, new PSU and OS they were on sale so that's how I managed to buy them, I do plan on eventually having a fully custom built system which I will continue to upgrade in the future since I couldn't afford to just build an entire PC from scratch, it was just a lot easier to build on my current PC.

Anyway I'm hoping you guys could help me on which components I should upgrade next, here are my current specs:
OS: Windows 7 Home Premium 64-Bit
CPU: Intel Core 2 Quad Q8200 2.33GHz
RAM: 4GB DDR2 400MHz
Motherboard: Packard Bell FMCP7AM
GPU: 1GB AMD Radeon HD 6850
HDD: 596GB NVIDIA SPAN 596.17G (RAID)
PSU: Corsair CX500 500W

My Budget is around £300 but we'll go with £380 as the max limit, I'm looking for help on what components I should upgrade next as well as the particular parts you guys suggest.

Other things I should mention, I live in UK so any links to parts you have suggested would be better if they deliver to the UK, if not I can look on UK sites myself, this is also my first time sort of building a PC since it isn't fully custom built, so I might need extra advice on some parts as well as putting them together.

Games I plan on playing or already play, right now I mainly play games like Skyrim, Borderlands 2, Team Fortress 2, League Of Legends, Killing Floor etc, In most of these games my FPS and graphic settings are fine overall, generally running at 1440x900, high/medium settings, Borderlands 2 lags in crowded areas regardless of graphics settings this is something I really want to solve, I'd also like to be able to play Minecraft singleplayer again, since it has updated from alpha the lag spikes have increased while the fps has decreased so I've just stopped playing it all together. I figure a CPU upgrade is the best for this but to get that I'd probably need a new motherboard and may as well upgrade the RAM, so a bundle of RAM, CPU and Motherboard sounds like the best possible option to me.

I've asked at various places on the web but only got one useful reply which was this:
http://pcpartpicker.com/uk/p/nj49
What would you guys say about this?
For this I would probably need a new case which I am happy to pay for as well, I just wanted some extra advice from you guys as I'm not sure right now.

If there is anything else I forgot to mention please let me know and thanks in advance.
 
PCPartPicker part list: http://pcpartpicker.com/uk/p/oOFU
Price breakdown by merchant: http://pcpartpicker.com/uk/p/oOFU/by_merchant/
Benchmarks: http://pcpartpicker.com/uk/p/oOFU/benchmarks/

CPU: Intel Core i5-3470 3.2GHz Quad-Core Processor (£144.05 @ Amazon UK)
Motherboard: ASRock H77M Micro ATX LGA1155 Motherboard (£62.99 @ Overclockers.co.uk)
Memory: Corsair Vengeance 8GB (2 x 4GB) DDR3-1600 Memory (£30.96 @ Scan.co.uk)
Storage: Seagate Barracuda 2TB 3.5" 7200RPM Internal Hard Drive (£69.96 @ Scan.co.uk)
Case: NZXT Source 210 Elite (Black) ATX Mid Tower Case (£39.95 @ Scan.co.uk)
Total: £347.91
(Prices include shipping, taxes, and discounts when available.)
 

Brut_Man

Honorable
Jul 22, 2012
17
0
10,510
Thanks for the reply, so would I be better off buying that HDD instead of an SSD?
Also what performance could I expect after upgrading my system with those parts with the games I mentioned?