We have put the Global Win Pentium 4 heatsink up against the Intel stock cooler Pentium 4 heatsink using an Intel Pentium 4 processor clocked at 1.5GHz. - Sorry for the lack of heatsinks for testing, these are the only two Pentium 4 heatsinks we have available at this time. CPU temperatures were measured through the BIOS of the motherboard. For both heatsinks we used Arctic Silver II thermal paste. It is very important to note that the Intel Pentium 4 stock cooler uses a pure copper base, in the past this has been proven to be a better heatsink material than aluminum for heat dissipation, note I didn't say always.
As you can see from the quick testing results above, the Intel Pentium 4 stock HSF has beaten the Global Win P4 HSF by two degrees Celsius. This come as a shock to me as every other Global Win heatsink I have used and tested in the past has beaten previous Intel stock coolers. As I said above, the Intel Pentium 4 stock cooler uses a pure copper base, in the past this has been proven to be a better heatsink material than aluminum and this is justified in the testing above.