still not happy with my current cooling

[littlekates]

after replaced my xp-120 with arctic cooler freezer 64 pro temp drop from 35c idle to 31c-33c depend on room temp. but im still not happy about this as my room temp never go past 24c. i would expect cpu temp to be below or around 30c at idle. what else can i do to improve my airflow, my current case setup is below.

 

[littlekates]

yeh, maybe you right, but still worries me if i decided to oc'd this, let say another 200-300Mhz. the temp would be even higher =P but im ok with the current temp. maybe moving to w/c in the future.