Re: Some reference power consumption

Steve Browne wrote:
> Aaron Birenboim wrote:
>> Seems a bit high.
>>
>> I put a Kill-a-watt on the new machine I'm building.
>> It is interactively running, but not doing anything too intensive.
>> Mostly downloading and installing software (some disk access)
>> It is writing to the single SATA system disk.
>> 5 fans happily blowing away, making a raquet.
>> =====================================================
>> 2000 VA UPS alone           ???   I didn't measure
>> Not terribly busy machine   200W  (with UPS too)
>> Machine with 24" LCD on     240W  Machine+monitor+UPS
>> =====================================================
...
> I have a second system, sister to the first, the only difference being 
> that it has a 7950GT card for gaming etc. When I have them BOTH fired 
> up, connected through a KVM switch, the total draw is still always below 
> 450 watts. The point I am implying is that the power supply market is 
> overblown and relies on perpetuated ignorance.

Yea.  Even with the typical rule of thumb at least 2:1 capacity over
nominal load, 200w draw means 400w power supply.
The motherboard maker and GPU maker suggest at least 500w
for this system.  To be safe, I got 800w, since
I have two CPU's and might add another GPU later.
I most likely could have been OK with a more common,
cheaper, $150 box with integrated 680W supply.

I did note that when I turned up the brightness on my 24" LCD,
its draw went from 40w to 60w.
The system draw raised about 15w when I started playing arena
(GPU use).

          aaron

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