Check This Spec over? :)

[MrZen]

Intel Core i5 6600K Unlocked Skylake Desktop Processor/CPU
MSI GeForce GTX 960 GAMING Graphics Card 2GB
Corsair Carbide 100R Gaming Case
WD Red Enterprise 1TB Internal Hard Drive
Samsung 2.5 Inch SATA3 850 EVO 120GB SSD/Solid State Drive
Gigabyte Z170XP-SLI Intel Skylake ATX Motherboard
Corsair Vengeance LPX 8GB DDR4 Memory Kit - Black
Corsair VS450 450 Watt ATX Power Supply Unit
Arctic Freezer 11i CPU Cooler

Is this a good spec, this is for a budget around £600

Any suggestions/improvements are more than welcome this will be used as a casual gaming PC.

 

[MrZen]

Not pre built, just some parts i put together that looked fairly good.

ill take a look at a better PSU, just wasn't sure what's the best make for PSUs

 

[MrZen]

In terms of the price around the GTX 960, is that the best GPU?

I can stretch the budget to around 700, if its worth the extra money.