I dunno if it's the same HS/F that I have sitting on my desk in front of me, but if it is... then your friend just wasted his time. I had this fan in my system before, in fact it came with it! I started getting a few probs with apps shutting down, things locking up stuff of that nature. It turned out that the CPU HS/F was....well.... <ahem>pathetically small compared to today's standard and not doing it's job properly. I quickly rectified the problem by whacking in a beefy-arsed ThermoEngine V60-4225. Muhhhahahaahaaha.

You should maybe look at upgrading to something a bit more beefier. It may save unecessary cost later if things go 'titties up' due to heat issues. I 'spose it depends on what else your friends got in there (how many sys fans?). Thats not really important, though. The HS you have will do the job fine, but you may want to keep your eye on the CPU temp....