A small question, Is this PC worth it?

It looks pretty good. If you're willing to build you're own then we can be more picky. The main components are good choices, though - the 2600K, the GTX 580, the motherboard, and the SSD.

Know that you're overpaying for water cooling. There's nothing wrong with that - it looks cool and it does it's job - but it's very expensive, air cooling does just as well, and water cooling requires some upkeep (though I'm not an expert).

Now the parts are fine choices and everything, but if you're willing to buy all the parts individually and build it yourself then you can do better on your budget.

Thank you for replying, I could build it myself but the problem is that I have no clue about overclocking etc.

If I don't know anything about watercooling would it be best to just avoid the whole thing then? I know it can't be too hard to look up and see how all the cleaning/maintenance is done - But it's one of those things were a simple mistake could ruin it?. I only got that part simply because it was with the system i originally chose - Liquid i7 Kraken.

I could quite easily swap it for something like NVIDIA GeForce GTX580 3GB 16X PCI Express for a similar price.

Yes, the water cooling is really something that is best left to people that know how.... or be prepared to take it to a shop every 6 months for maintenance. A real water system must be drained, cleaned, and reassembled periodically. And frankly most shops are clueless when it comes to water.

Replace the generic Cyberpower PSU with a quality one from Corsair or Antec also.

I'm not sure that cyberpower pc's come with an overclock. Building yourself is pretty fun and it's not all that hard. It'll save you plenty of money and I think it's something you should seriously consider.

Yeah, like proximon said - if you don't know what you're doing then stay away. If you get a leak then something is going to fry.

Well I swapped the PSU for a CoolerMaster 850watt Silent ProModular Gaming Power Supply, SLI / Crossfire ready and changed the cooling fan to ARCTIC FREEZER 13 CPU FAN with 4 direct heatpipes since the current one I had was watercooling.

A list of the graphics cards I could get in replace of the watercooling one:

NVIDIA GeForce GT 430 1GB 16X PCI Express
NVIDIA GeForce GTX 550 Ti 1GB 16X PCIe Video Card
NVIDIA GeForce GTX 560 1GB 16X PCIe Video Card
NVIDIA GeForce GTX 560 Ti 1GB 16X PCIe Video Card
NVIDIA GeForce GTX 560 Ti 1.2GB 16X PCIe Video Card (448 Cores Classified)
NVIDIA GeForce GTX 560 Ti 2GB 16X PCIe Video Card
NVIDIA GeForce GTX570 1280MB 16X PCI Express
NVIDIA GeForce GTX580 1536MB 16X PCI Express
NVIDIA GeForce GTX580 3GB 16X PCI Express
NVIDIA GeForce GTX 590 Dual GPU SLI 3GB 16X PCIe Video Card
---------------------------------------------------CrossFire Ready----------------------------------------------------
AMD Radeon HD 6450 1GB GDDR3 16X PCIe Video Card
AMD Radeon HD 6570 1GB GDDR3 16X PCIe Video Card
AMD Radeon HD 6670 1GB GDDR3 16X PCIe Video Card
AMD Radeon HD 6750 1GB GDDR5 16X PCIe Video Card
AMD Radeon HD 6770 1GB GDDR5 16X PCIe Video Card
AMD Radeon HD 6790 1GB GDDR5 16X PCIe Video Card , Eyefinity 3 capable
AMD Radeon HD 6850 1GB GDDR5 16X PCIe Video Card , Eyefinity 3 capable
ATI Radeon HD 6870 PCI-E 16X 1GB DDR5 Video Card, Eyefinity 4 capable
ATI Radeon HD 6950 PCI-E 16X 2GB DDR5 Video Card, Eyefinity 4 capable
ATI Radeon HD 6970 PCI-E 16X 2GB DDR5 Video Card, Eyefinity 4 capable
---------------------------------------------Silent Edition Graphic Cards---------------------------------------------
NVIDIA GeForce GT 430 1GB 16X PCI Express Passive Cooled
NVIDIA GeForce GT 520 1GB 16X PCI Express Passive Cooled
ATI Radeon HD 6450 PCI-E 1GB Passive Cooled
ATI Radeon HD 6750 PCI-E 1GB Passive Cooled
ATI Radeon HD 6850 PCI-E 1GB Passive Cooled

I'm not really up to date with the latest hardware, So I don't know what ones are the better ones, Which one would you pick?

While many Cooler Master PSUs are poor, that one is decent.

See if you can get the Thermaltake Frio or cooler master 212 CPU cooler instead. Both highly rated.

I would either get two 6950 2GB cards, or the single GTX 580 3GB. Just depends on your budget.

Was able to get the Thermaltake frio from the list that they had. Would it be better to get the 6950 2GB cards or GTX 580 - which gives the better performance, Never really understood the difference between Single and dual cards.

In most games you won't need that much power, and the GTX 580 will be enough.
In a few games a single card will perform better than two.
In most games the 2 card solution will be better.