Re: Building computer - power supplies
On Sun, Sep 29, 2013 at 5:18 AM, Doug <dmcgarrett@optonline.net> wrote:
> On 09/28/2013 03:23 PM, Stan Hoeppner wrote:
>> On 9/27/2013 6:37 PM, Joel Rees wrote:
>>> On Fri, Sep 27, 2013 at 9:36 PM, Stan Hoeppner <stan@hardwarefreak.com> wrote:
>>>> A point I forgot to make. This is something everyone should know.
>>>>
>>>> Subject: The marketing myth of multiple +12V rails
>>>> [...]
>>>
>>> What I want to know is why Intel CPUs still need the +12V.
>>
>> They don't now and they never did. The 8088 through 80486 and the first
>
> /snip/
>
>>
>> Installing two voltage regulators next to the CPU socket and using
>> standard ~22 gauge copper wires from the 12V rail of the PSU solves the
>> problem cheaply. The 12V rail was chosen because 3.6x less current is
>> required vs using the 3.3V rail as was used previously, which means much
>> smaller wires are needed.
> /snip/
>
> Do I understand correctly that there are two switching power supply
> chips at the input to the CPU to produce 3.3Volts? Obviously, a linera
> regulator cannot produce and gain in current. Iin = Iout for linear
> regulators.
I7m confused. Did you mean can't produce a gain in current or power?
--
Joel Rees
Be careful where you see conspiracy.
Look first in your own heart.
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