3.8 GHz P4-570 and E0 Stepping To End Intel's Performance Crisis

Thermal Loss Under High Load Is Up To 104.5 W

Now, let's take a look at the worst case scenario: how much energy does the new P4-570 transform into heat when working under maximum load?

To test this, we stressed the CPU using the well-known utility Prime95. The maximum thermal loss was calculated using the following formula:

Current * Voltage = Power

(41.8 A + 36.1 A) * 1.341 V = 104.46 W

As you can see, for the first time, a desktop processor actually managed to reach a triple-digit value. We did expect this, however, because the 115 W thermal design was meant to run even the 4 GHz version - even though that looks rather difficult today.

The first two voltage regulators of the Abit AS8 measured 41.8 A.

The other two parts of the four-phase system had 36.1 A.

The Pentium 4 570 was running at 1.341 V on the Abit board.