Martin Cracauer wrote:
Tim Kientzle wrote on Sun, Dec 28, 2003 at 11:22:10AM -0800:The table shows the Processor Thermal Design Power. The CPU will dissipate much less during normal operation and can dissipate even a bit more as worse case. This number is important to the hardware developer only.
Ouch! I've tested a bunch of 'business-grade' desktops around my office, and they all run 40-60 watts during normal use (not including monitor) with peak power at boot time up to 70-80 watts. This includes some P4s with lots of memory, CD-RWs, etc. (The one exception is an AMD Duron system; it seems that the AMD processors are uniformly power-hungry.)
I wonder how that works.
I finally got ahold of a datasheet of P-4 power consumption: http://support.intel.com/support/processors/pentium4/sb/CS-007999.htm#Table2
The actual power can go down to less than 10% if the CPU is idle.
Are these business-grade ones maybe equipped with mobile P-4s?
No, it is just the fact that modern CPU are most of the time just idle.
Erich
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