Is having my multiplier set to 15x safe?

[inspector71]

Guys i have been using my computer i built a few week's back with the multiplier set to x15, now is this safe my temp readings bounce from 45 to 58 and i seem to be under the caution from pc probe II and my ai booster, I am using AMD 6000 3.0 GHZ cpu with an ASUS M2N-SLI Deluxe Mobo, I am am hitting a stable solid speed of 3.3ghz and the temps i mentioned above have been the same for the past few week's. Is this ok or should i change any of my settings in my bios?

 

[inspector71]

Ok i just just download core temp, These are my readings right now.
core#0 45c-48c
core#1 40c-41c

Frequency; 3300.36mhz(220.2x15)

Does this look safe to anyone? let me know!

 

[V3NOM]

well sure, but that's not really making the most out of your RAM is it?