£400 - £450 build.

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I posted yesterday, but was pretty vague in my OP, so I'm going to be more specific here.

I need the system only, no keyboard, monitor, OS, mouse, etc.

I already have a graphics card and 8GB of Kingston HyperX Genesis Grey.

I would like have the ability to go crossfire or SLI in the future.

Would like to keep the price to £400, £450 at a push.

Would like to be able to overclock the processor, I don't want an after market cooler just yet, but when I have the money for one I will buy one.

Edit: I also have a hard drive.

 

[shootersam]

what graphics card do you have? (the choice of power supply depends on this)

gtx 260, but i'll be upgrading to sli 560ti's or crossfire 6950's

 

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Stulid read the op. He wants to be able to SLI/CF he will need atleast an 750W. Perhaps a 800W. Do you have a HDD?

Where's stulid?

 

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Oh crap, I also have a hard drive. LOL. Should have mentioned this. Durrrr

 

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@Hyburnate. I can't go SLI on that board

Edit: I also need an optical drive