Hi,Im thinking of upgrading my Dell P4 3 ghz (1GB 533 RAM) system to a customized e6400 c2d, 1 GB of 677 RAM, and keep my NVIDIA GS (256mb).My understanding is that the 800 FSB on the P4 will be blown away by the 1066 FSB of the C2D.I am curious what the thoughts on the performance difference I would see in 2004 between the P4 and the C2D.I do see an advantage between the e6400 and e6600 because of the extra 2mb of cache, but, will there be a big difference between e6400 and e6600?

>Hi,>Im thinking of upgrading my Dell P4 3 ghz (1GB 533 RAM) system>to a customized e6400 c2d, 1 GB of 677 RAM, and keep my NVIDIA>GS (256mb).>>My understanding is that the 800 FSB on the P4 will be blown>away by the 1066 FSB of the C2D.>>I am curious what the thoughts on the performance difference I>would see in 2004 between the P4 and the C2D.>>I do see an advantage between the e6400 and e6600 because of>the extra 2mb of cache, but, will there be a big difference>between e6400 and e6600?I wouldn't put anything less than DDR2-6400 (800 MHz) RAM in, and highly recommend 2GB on any new FS system build.Regarding the 6600 versus the 6400...for less than $100 you get a CPU (the 6400) that's 13% faster, and comes with double the L2 cache...I'd highly recommend it, especially if FSX is ever on your horizon.The C2D will smoke your old P4, but the faster FSB is only a tiny part of the reason why.If that nVidia GS is an AGP card, you'll be holding the power of that new CPU back considerably. Putting this new gear onto an AGP based mobo will put you at the end of the line on video upgrades, and severely limit your upgradeability in the future.RegardsBob ScottATP IMEL Gulfstream II-III-IV-VSantiago de Chile