E520 Heatsink

I've just installed a Q6600 (B3) in my E520 and i feel the temps are to high. 47 idle.

looked on ebay and i found this.

http://cgi.ebay.co.uk/Heatsink-Dell-Dimension-3100-3200-5000-5150-E520-Heat_W0QQitemZ140280102493QQcmdZViewItemQQptZComputing_ComputerComponents_Fans_Heatsinks_SR?hash=item140280102493&_trksid=p3286.c0.m14&_trkparms=72%3A1301|66%3A2|65%3A12|39%3A1|240%3A1318

Just wondering if this is better than my current cooler as the fins seem to go a different way