With the system running at stock settings the HP-1216B cooled our i7-920 to 60.75*C on high, almost 14*C cooler than the stock Intel HSF. On low however, it warmed up a fair amount to 68.25*C. That is still 4.5*C cooler than the stock cooler.
Stepping the heat up a little we have the system overclocked to 3.5GHz. With the HP-1216B on high it cooled our i7-920 to 67.5*C, 16*C cooler than stock and tied at load with the Noctua NH-U12P SE2. The idle temp, however, is almost 6* warmer than the NH-U12P SE2. With the HP-1216B on low it was just like the previous test, just slightly better than the stock Intel cooler by 4.5*C.
With the HP-1216B doing well at 3.5GHz I decided to give it a shot at 3.8GHz. With the system loaded up the HP-1216B was keeping our C0 stepping i7-920 at a toasty 82.75*C. I didn’t think about trying the low speed setting.