Advice, pls.

[Hoplite]

Planning on upgrading my PC within a month or so, budget of £600.
I'm aiming to get a new CPU, motherboard, GPU and better RAM. I currently have a Corsair VX550W power supply, not sure if I'll need to upgrade that or not.

Here's what I have so far, It'd be a great help to receive people's opinions on it: https://secure.scan.co.uk/aspnet/Shop/SavedBasket/Show.aspx?id=0dcded539f384f038578d6a1bee3a86d (I would prefer to stick to Intel for the CPU and ATI for the GPU). If you do have suggestions etcetera it'd be awesome if you could provide links too (English sites only please: Scan, Aria, Overclockers etc... NOT Newegg!).

Thanks!

Edit: Have a Speccy picture!

 

[Walker.]

I'm planning on getting a new PC myself and these are actually parts I picked out for the PC, I'm on a 1.2K budget but this is below 600 pounds altogether. You might be able to fish out something better but after having discussions over some forums these things were recommended to me.

Sapphire HD 7850 2048MB GPU

Intel core i5-3570K 3.40GH

G.Skill RipJawsX 8GB (2x4GB)

 

[Shisno]

I'm already building my new PC from scratch, part by part, and this is what I've got so far.

ASUS P8Z68-V Pro

HAF case

Currently working on getting the rest of the parts, but gotta wait till payday.

 

[Hoplite]

Already have a case etc but thanks! That motherboard is a Z68 chipset too, and I think I'd prefer to invest in a Z77 one, whether or not I go for the i5 2500k or the i5 3570k.

 

[Hoplite]

Okay, double post but suck my nuts, need some input from somebody. I currently have a Corsair VX550W power supply, ~86% efficiency IIRC... Am I going to need to upgrade this also or is it juuust about right for what I'm going to be getting?

Here's the components I have down so far:
GPU - http://www.scan.co.uk/products/2gb-...5-28nm-gpu-1100mhz-1280-cores-dl-dvi-hdmi-mdp
Mobo - http://www.overclockers.co.uk/showproduct.php?prodid=MB-061-AK
CPU - http://www1.hardwareversand.de/articledetail.jsp?aid=57690&agid=1617
RAM - http://www1.hardwareversand.de/articledetail.jsp?aid=48886&agid=1193
CPU Cooler - http://www.overclockers.co.uk/showproduct.php?prodid=HS-035-AR&tool=3

 

[ShadowDragon]

Third-Generation Core i series is the same as the second, just includes a DX11 Intel GPU. Unless you plan on using that, it's not needed, really.