The answer is.....I will be using it for gaming mainly Flightsim (FSX) and general internet stuff.
I do video editing for work but I have an iMac for that and that only.
I have had a go with FSX with some complex addons/scenery on my i7 quad core Mac via Bootcamp and it does run pretty well but I want to keep that machine for work. Full spec of my iMac is 2.8GHz i7 quad core, 8GB RAM, ATI 6770M graphics card. Basically I want some thing that will run FSX preferably better than my Mac will but certainly not worse.
ah, flight sims do have a couple of requirements that other games dont. i know for a fact that they dont support SLI/crossfire, and they are also very CPU intensive (so you might want to up the cooler and back the graphics down to the 560Ti). however, i'm not sure if they make use of hyperthreading.
just a quick question. are you planning on going for a build with 3 or more monitors? if so then ATI is the only route you can take, but if not then its far better to go with Nvidia
its probably best to sell the 460 on. its massive overkill for a physX card, which is all you could do with it
There is no proven benefit of having hyperthreading with FSX. Some say there is others don't. I've tested it extensively with my i7 920 and have not seen any difference in performance. In my experience FSX runs smoother the higher the CPU clock. I like Stulids final build looks spot on but would go with an i5 2500K and get a better CPU cooler to allow you to overclock a bit more. As has been mentioned, FSX doesn't support dual graphics cards so going SLI/Crossfire is pointless. Also it's worth installing FSX on the first partition of its own dedicated HDD, (or even ideally an SSD), which helps with texture loading.
The cache with certainly help but even going back to when the i7 1366 CPU's were released there has not firm agreement regarding hyperthreading. If I were the OP I'd go for an i5 2500K and get an SSD for either OS or FSX. (Depending on budget available and the amount of payware and aftermarket addons I'd look at a 128GB drive as a minimum. You'll certainly notice more from the fast texture loading especially with demanding terrain and should have far less blur in the distance.