I know 3Dmark looping works good but I can't set for hours looking for artifacts. Is there a easier way?
You got the wrong idea. You don't need to sit at your computer and inspect every pass.
[*]install the side panels on your chassis to raise the ambient temperature
[*]set your hardware to the highest performance settings (AGP 8x vs. 4x, Fast Writes On vs. Off, et. al.)
[*]disable power management
[*]overclock your graphics card core/mem by 10% (might have to use third-party utility or drivers)
[*]run 3DMark looping for a few hours (or overnight)
[*]check your computer
If your computer hasn't crashed or reset, visually inspect one or two full passes. If no artifacts or anomalies are visible, you won't find any.