On Apr 25, 4:25*am, Powermac wrote:
How did DELL and eMachines get away with small 250W max rated supplies
in P4 3Ghz+ and Athlon 64 3000+ systems? if you added a decent gaming
video card and an extra HD you probably had voltage issues.

Learn what engineers know and what many computer assemblers don't
grasp. That 250 watt supply in a Dell is also called 360 watts when
sold to computer assemblers. Neither lied. Only one is providing a
more honest number. Latter is selling to A+ Certified Computer techs
who need not even know how electricity works to be certified.

Lack of technical knowledge is why so many power supply myths are
believed by a majority. Other popular myths involve thermal compound,
hardware damage due to heat, protectors, and shotgunning. Myths
traceable to untrained computer assemblers. So many as to suggest why
so much electronic and computer design must go overseas AND why so
many engineers (probably a majority) in the Silicon Valley are now
immigrants.

A choice is offered. To know only because the majority promote that
myth. Or to know by also learning why – which means numbers and the
underlying reasons why.

Dell does not underrate their supplies. Overrated is technical
knowledge of people who never first learned basic electrical
principles and then post as if knowledgeable. That has even created a
market ripe with power supplies that are missing essential functions.
They are selling to the electrically naive. But then this should be
obvious. If he does not provide the many technical reasons why - and
numbers - then assume myths.