Hal Lane said: --------------

...

Fractint never uses more than 50% of the Athlon 64 3500+ 2.2GHz CPU as shown in the Task Manager -- even when I raised the priority of the task to 'Real Time' -- the highest setting. The other 50% of the CPU is allocated to the System Idle task -- in other words, the CPU does nothing 1/2 of the time. :-(

Doug Stewart said: ----------------- I think that you have a dual core and you were just using 1 of the cores. Fractint will be running in a single thread and as such can only run on 1 of the cores.

Try running 2 copies of fractint at the same time and see if it goes up to 100%

This is a clever deduction, but is, unfortunately, not the case here. Intel is the company that makes the dual core CPUs. My CPU is a 32-bit Athlon. Also, I have a Windows program, Prime95, that uses about 93% of the CPU when it runs alone on the computer. It runs at the lowest priority possible. So I'm still at a loss as to how to get WinXP to schedule the use of more of the CPU for DOS Fractint. - Hal Lane ######################### # hallane@earthlink.net # ######################### -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.413 / Virus Database: 268.18.23/740 - Release Date: 3/30/07