Originally Posted by Pearlseattle
I tried it out a couple of months ago, but it was using too much cpu (~10% of 1 cpu), so I switched it off. gkrellm uses 1%.
Depends on conky config, what you want to display, and how often.
I generally used 1-2 second delay time between conky updates and it used about 0-1% maybe, on old athlon 1.6GHz.
gkrellm is very small while conky can be placed on whole desktop:
Also a great replacement for root-tail on desktop.