Opinion request about a file server

Erik Trulsson ertr1013 at student.uu.se
Fri Jun 5 23:22:27 UTC 2009

On Sat, Jun 06, 2009 at 12:43:23AM +0200, Wojciech Puchar wrote:
> > Much less than a Pentium 4! Exactly I don't know. This server is a
> > normal PC with a 380W PSU (still too much for the hardware). The funny
> > thing is that the CPU in it (Pentium Dual Core E5200 45nm) is supposed
> > to draw under 4W of power when idle with EIST enabled. This power draw
> unless CPU are constantly loaded it takes minor part of power. maybe your 
> CPU takes 4W, but other chips on motherboard takes MUCH more.

A bit more perphaps, but not MUCH more. The main chipset itself will almost
certainly not draw more than 20-25W when working.  Less when idle.
(If it is a chipset with integrated graphics you can add a few watts to
that, but probably not much more than that.)
Modern RAM-memory will draw perhaps 1-3W per DIMM, depending on size and
The remaing chips does not draw much. (After all they don't generate enough
heat to require heatsinks.)

The only really power hungry component in a modern system apart from the CPU
is the graphic card - and that only when using the more high-end models.

> it would be good to measure it with electricity meter :) i bet close to 
> 100W

Not counting the CPU and its power circuitry, I would be very suprised if
the other components on a normal motherboard pulled as much as half of that
even when under load.

In fact a typical modern desktop computer will, when idle, draw less than
100W for the whole system.  It is not even difficult to put together a
system that will stay under 100W even when under load. 

<Insert your favourite quote here.>
Erik Trulsson
ertr1013 at student.uu.se

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