Is Seti just as good as...

[killem1x1]

...Prime95 if you set seti driver to "high" priority for testing sysem stability?

[TC]

High priority doesn't make Seti run any faster or place a heavier load on the system. All it does is give Seti more priority over any other programs that might be trying to run at the same time. I haven't compared how much of a load the two programs put on the system, but both are probably equally good for checking stability.