On this box of mine, I only run TradeStation on it to draw charts. Nothing else. It has a i7-930 processor. Speed should be pretty good. But... #1) It is not a surprise but still kind of disappointing... that TradeStation doesn't support multi-core and hyperthreading architecture. Once in a while, I see the TradeStation app appeared to hang - no display update during market hours for minutes. I have many 1-minute and tick charts so when the chart update is stuck, I notice it right away. When I try using Alt-Tab to switch to a different Windows app (e.g. IE) the TradeStation windows would remain blank or "frozen". To my dismay, checking Task Manager on CPU usage, I would see something like this (enclosed image - sorry it is a simulation as I was unable to capture the screenshot at that time). One core: CPU 80% to 90% busy, while other cores and hyperthreads were almost just idling (e.g. 3% busy). #2) During the first 5 minutes when the market opens, everyday... TradeStation on this computer just goes through 3 to 5 minutes of calculations of some sort. No chart update. Charts are frozen as of the closing minute of the prior session. Then... after it is done with whatever it is doing, all the charts will get updated to the 5-minute past or whatever it may be. This is happening everyday. I called TradeStation Tech Support several times to discuss this performance issue with them. I am not getting any solid lead. Suspected cache data corruption. Suspected indicator program corruption. Suspected TS workspace corruption, desktop corruption, etc.. And virus on computer, firewall, spyware, all the possible suspects. The opening 5-minute chart update delay is experienced everyday. And the "frozen" chart is during market hours, may be once a day or 2 days. They might be kind of the same problem. I have reduced the number of charts to a bare-bone minimum to use at the opening but problem still persists. I am running out of ideas how to trouble-shoot and isolate this problem. I am wonder if any of you use your hardware mostly for TradeStation app? Have you experienced this "frozen" chart problem regularly? Are there any utility (besides Windows Task Manager) that you can use to monitor a particular application or process (the network I/O, disk access, CPY cycles, etc.). The "frozen" chart may get unfreezed after 5 to 10 minutes. Sometimes longer. There is no way to tell. It is a very unpleasant experience during market hours. Many times I just opted to kill the TradeStation process and reboot the box and restart TradeStation. This is typically faster than waiting for the app to unfreeze. As a preventive measure, I am rebooting this box everyday. And wipe out the Cache and TCache folders used by TradeStation while I am at it.