Archived from groups: comp.sys.ibm.pc.hardware.chips (
More info?)
For P4 prescott can I use ATX12V 1.3 or 2.0
Robert Inkol wrote:
> David Nguyen <pppswing@yahoo.fr> wrote in message news:<2vtrieF2mun9lU1@uni-berlin.de>...
>
>>Hello,
>>My question is about standard to fix and insert powersupply. What is
>>Zippy ? I suppose a manufacturer but also a certain standard. What are
>>standards to fix the PSU (I am not talking about connector) ? What is
>>PFC, active or passive what ?
>>Thanks
>
>
> I think Zippy is a brand.
>
> There are several standards for computer power supplies. The AT
> standard power supplies (which did not support soft off and had to be
> switched off manually) have been obsolete since about 1998. More
> recent desktop computers generally employ ATX type power supplies. The
> ATX standard has gone through several revisions. The latest one is
> distinguished by having an additional 4 pin connector which is used to
> provide a dedicated connection for the CPU power in P4 and Athlon64
> systems. To replace your current supply, you have to determine which
> type (ATX etc.) is required and the minimum rating (watts total and
> currents for each of the output voltages). Your existing supply
> probably has a label that provides this information. If you think you
> might upgrade your other hardware at some point, you probably should
> get a supply that is rated for at least 350 watts. Power supplies made
> by reputable manufacturers such as Antec are preferable, but are also
> more expensive.
>
> There are a few special cases to watch out for. Some Dell computers
> (older ones I think) had non-standard arrangements for the assignment
> of power connector pin numbers and voltages (which could cause nasty
> problems).
>
> PFC refers to power factor correction. This causes the AC current
> drawn by the power supply to better approximate a sinusoidal waveform.
> Passive PFC uses passive components (inductors and capacitors) at the
> input of the power supply to shape the current waveform. Active PFC is
> a more sophisticated approach that achieves a similar result by
> modifying the operation of the power supply. I understand PFC is
> required by European standards, but not in North America where it is
> quite rare.
>
> Robert