I want to get a new PC for trading. I'm thinking Pentium 4, lots of RAM, 2 monitors, 2 hard drives (one w/Windows 2000 Pro, the other w/Windows 98SE), and I'll have a broadband (DSL or cable) connection. Now, for INTRADAY trading, does it make a difference which kind of RAM I use? Will my data feeds or executions be significantly slower if I have PC133 SDRAM instead of PC800 RDRAM with the 400-Mhz bus speed? (Please assume I'll have the proper motherboard for the RAM type). How important is RAM type for intraday traders? From what I understand most prop shops are still using Pentium III systems with SDRAM, but I also read a lot of posts here on Elitetrader with at-home traders running top of the line Pentium 4 units and RDRAM. Which brings about another question: Is a Pentium 4 necessary for intraday trading? Comments appreciated.