Note: I already have 1 WD Caviar black, and with this list I'd RAID the two of them for 1TB total.
Thoughts? I'm mainly curious where you folks believe the bottleneck would be, from a gaming perspective. It's my understanding that, although the i5 2500k blows the FX 4100 away in terms of bench marks, either one could keep up with a GTX 560 ti. Is that true? What if I want to get another 560 ti later? Any advice would be appreciated.
Spend the extra 10 bucks for a Phenom II 965, its better performing processor than the FX-4100, yes you're right the 2500k is currently the best gaming CPU on the market today, but at nearly half the price the 965 is perfectly adequate to keep up with a 560 TI. The FX-4100 is not a true quad core, a 965 is.
I am concerned about your choice in a refurbished video card, they generally have very short warranties, while it will probably be okay, thats a risk you have to keep in mind. For a little cheaper than 200 dollars, you could get an overclocked Radeon 6870 that will perform almost as well as a 560 TI that isn't a refurb job.