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I don't know if FSL is optimized or how it would compare to a dual core2duo system, but we are running FSL 4 on a single core2quad system (2.4 Ghz 6600 processor). The OS is ubuntu 7.0.4. It is very fast. The load gets distributed among the 4 processor cores, which you can see with the system monitor. If you run a single process, it tends to take up 100% of one core, but only a small percentage of the other. But you can run 4 processes in about the same time as a single process. On Sep 7, 2007, at 10:51 AM, Emily Rubin Ferreira wrote: > Dear FSL, > We are using your fabulous software for DTI analysis (FDT), and it is > really wonderful but takes quite a while, especially bedpost. So we > are planning to get a new PC that will be a faster system. We are > wondering: > > Is FSL (specifically FDT and bedpost) optimized for 2 Quad-core > processors (xeon x5355 2.66Ghz L2 Cache 1333MHz)? > Or, are we better off with multiple Dual-core processors? The website > does say under Windows system requirements that FSL recommends Dual > core CPU/multple CPU. > > Thank you, > emily