The old XP box with a core 2 duo T8100 (passmark 1362) is getting a little long in the tooth so I was thinking about upgrading. Found this used from a computer reseller: Dell T3500 Xeon W3550 Quad Core 3.0ghz (passmark score 5648) Two 500GB SATA 7200 drives 256MB ATI FireMV 2660 6GB (3x2GB) 1333mhz ram Win 7 professional For a bit over $800. Planning on mostly running Amibroker (which can take advantage of multi core chips), ninja trader, and TOS User interface plus some custom excel worksheets. I might add programs like Mathcad or Maple in the future for some real math crunching. I like the dell precision series from their reputation on the board for reliability, but not sure the processor is optimal for me as I was assuming I would get at least an i5 or preferably an i7. But think it should be OK as folks are talking about i3's being totally acceptable for this. No gaming, obviously on this computer. Hoping that I can configure the drives in RAID. I only will run one or two monitors, but I want HD monitors dataport capable since the ATI is. Recommendations for the best 21-24" HD monitors price/return quality wise appreciated. Good deal/bad deal or should I just build my own at this point for $500-$650. Less about the money than the stability and future ease of use. Thoughts?