here is what you are doing wrong he wants an 1800 pound pc not 1300
i know this pc is a beast but he wants a god damn animal that can do anything!!!!!!!!!!!!!!!! so start upgrading GPU to the best in existence and CPU to i7 3930K
It's not needed on a gaming system - the 3930K won't be fully utilized. You don't need an £1800 system to play games on - if it were a Photoshop / CS5 build I'd say differently but anything more than what I posted will be overkill. I guess you could add a second 670 and then you'd meet the budget but you don't always have to in order to get extreme performance. The 690 isn't really necessary either - dual 670s will give you a better graphics boost than a single 690 will.
Very similar to g-unit's build. I'd say the main difference is a better monitor.
-Overclocking - do it. It's worth it for a high-end build, and it's not hard (my BIOS did it automatically when I asked it to). The overclocking is the reason I added that Hyper 212 CPU fan. Very good fan for the price, and will get your CPU up to 4-4,5GHz.
-SLI - again, high-end build - you want the possibility to do it in the future. The Extreme4 motherboard is an excellent motherboard that supports SLI. SLI is the reason I've upped the PSU to 750W - it should handle your CPU + 2xGTX 670 + overclocks just fine.
-The HAF cases (High Air Flow) are very good for keeping your stuff cool. You won't need any extra fans than the already mounted case fans + the Hyper 212 CPU fan.
-How much space do you want on your HDD (I picked 1TB)?
-Do you want to install your games on a SSD (your budget allows it)?
Installing games on a SSD instead of a HDD will not improve the games' performance at all. What it will improve is the loading times.
To simplify the question: do you want to sacrifice 100£ ± to shorten loading times in games?
We're talking about upgrading from a 128GB SSD to a 256GB one (you'll get a few games on a 128GB SSD as well, but I'd recommend going 256GB if you want to install games on a SSD. Steam, for example, forces you to install all games on the same drive, something that a 128GB SSD will not be able to handle if you have a few games).
Well then I think I will defiantly be upgrading to a 256GB SSD as the less time loading games the better.
Is there a 256GB SSD of the version you suggested or would I have get a different make altogether.
Also one final thing will this build be fairly quiet?
The cost per GB isn't worth it on a 256GB SSD, IMO. It's better to get a 2TB drive to supplement it and a low cost 64 - 128GB SSD. You don't want to overload an SSD and you don't want to put a lot of stress on it as SSDs have a much more limited read - write cycle over a traditional HD.
Both cheap and very good imo. I've never been a fan of spending a lot on mouse & keyboard, and these do the job very good for me.
The Sidewinder x4 keyboard has 6 macro buttons (you can cycle 3 profiles, practically making it 18 buttons), handy keys for mute/volume+/volume-, it has a red light under all the keys + a handy "open calculator" button. Easy to recommend.
The G400 mouse is really just a mouse, and I don't expect anything more. It does have some handy buttons though, like increasing/decreasing sensitivity + back/forward in webbrowsers etc.
There are tons to pick from out there though. My #1 recommendation would be to get both a wired keyboard and a wired mouse. Since this is actually a desktop computer, I don't think this is a problem.