I’m thinking I’ll be able to get a cheaper graphics card in a couple of years time for CrossFire, which will give me a good performance/price payoff, although I realise I won’t be able to have future games on high detail/res, but that’s fine. I won’t be able to afford a new graphics card every couple of years, so that’s why I’m thinking about CrossFire, but if it works out to be false economy or is advised against, how about the Antec TruePower New 550W Modular PSU? http://www.ebuyer.com/159918-antec-truepower-new-550w-m...
Would you recommend I get the power extension cable with this case and (either) PSU?
Any suggestions on case fan sizes and their locations?
Are there any known compatibility problems with the components I’ve chosen so far? Eg, case, fan, memory dimensions/locations etc. Correct power leads and length? Etc.
Thermaltake have released a lot of bad units, some people probably hold it against Thermaltake for all these bad units. However most, if not all units, from the Toughpower XT or Toughpower Grand series are high quality; they have high operating temps (50C) and they can deliver what they claim. The only criticism I have read of the Toughpower XT *75 series is that they are overpriced, which is not the case now on ebuyer.
The 12V on the TT XT 675 is 672W btw.
You might be alright with the stock case cooling as it already has an intake (which might not get that much air to the hottest components) and an exhaust fan. But with overclocking and potentially crossfire you might end up putting a 120mm fan as an intake to blow air onto the GPUs and then possibly an extra 140mm fan in the top.