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CPU Cooler Corsair H100i 77.0 CFM Liquid $98.99 Memory Kingston Beast 32GB (4 x 8GB) DDR3-2133 $326.74
Why this cooler? See Tweakers Page - What kind of PC to use? and note the remark about coolers:
Corsair Hydro coolers do not give better cooling performance than air coolers from Cooler Master or Noctua, nor do they run quieter. They are only more expensive. Don't forget that air coolers in push-pull configuration have two fans, that are replaced by two fans on the radiator when using a Corsair Hydro. Unfortunately, the Corsair fans are pretty noisy, thereby defeating the intention of water cooling to make things more silent. Effectively, one replaces two fans with an average noise level of 25 dB with two radiator fans with 35 dB. If the cooling performance was better, that extra noise might be overlooked, but that is not the case. Up to around 4.8 GHz overclock, the performance difference between air coolers and Corsair Hydro is negligent. So, if you opt for Corsair Hydro coolers, you don't get better cooling, you do get more noise and you spend a lot more.
Is that memory 1.5 V ? 1.60+ V is not advisable. Kingston HyperX Beast is usually 1.60 V and that is ill-advised. This can be an alternative: G.Skill RipJawsZ F3
Generally nVidia is far more popular than AMD video cards, because of the hardware MPE support, that is proven technology. However, if you need 10 bit output, you are effectively limited to Quadro K4000 or better K5000, and these carry a hefty price premium.
thanks cc_merchant, taken some of your advice on board and made amendments.
have also done some research apparently the lower spec Quadro cards also support 10-bit but I've decided through my reading that perhaps its not so critical after all - but all the same, thanks for advice.
new spec is - http://au.pcpartpicker.com/user/Sarrold/saved/46on
welcome any new comments / advice from anyone.