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PSU requirements for P4 (how low can I go!)...and...12volt connector needed?

N

nortexoid

Diamond Member
I'm planning on picking up a flexATX case w/ a proprietary 150watt PSU (this one in black)...i was wondering if that PSU would be sufficien to run a P4 1.6A@2.133Ghz (133mhz fsb) on an integrated SIS 650 chipset board...

i'll use the integrated video, audio and LAN...there'll be one hdd and one rom drive...and nothing else.

also, is the 12v P4 connector (that supplies current to the CPU) necessary or not?...i'm under the impression that it's not...tangible benefits of using it?...i.e. some objective testing done?

on a side note, anyone else got any good looking bookPC-like cases (no thicker than 3.5")???
 
Some major manufacturers make integrated P4 machines with a 165W power supply. So 150W is probably sufficient for a non-overclocked machine. As soon as you start to overclock, you need a larger power supply. I wouldn't go with anything close to 150W for an overclocked machine.

The rest, I cannot answer.
 
u made me check this thread for nothing...

joking.

overclocking the situation becomes a little weary - but i plan on leaving the chip at default voltage, which will help slightly...i also plan on using only integrated components, which would help again...it's hard to say i guess.

still wanting to know bout the 12v connector.
 
I would say no. I would not run any P4 with anything under 250watts.



<< Some major manufacturers make integrated P4 machines with a 165W power supplys... >>



emachines that use 165watt psupplys for P4's are pieces of s h i t and have every corner cut. You can EXPECT problems with that fancy new 1.6a and that power supply... I know what I'm talking about...
 
crap....there's no replacement PSU's for that case either..suppose I could try to fit one in there...no idea...i'm not dropping to anything below athlon xp or p4 performance.

flok - what about the additional PSU connector for P4s...is that necessary?
 


<< emachines that use 165watt psupplys for P4's are pieces of *&^% and have every corner cut. >>



Dell also sold a line of business P4 machines with a 165 W power supply. Now they "upgraded" to a new 250 W power supply (200W continuous). I just stated that 165 W will work with minimum parts - but you certainly will do better with a larger one. I answered the original question, 165 W is as low as anyone probably should ever consider going.
 
some local P4 guys have done some experiments (Wingz Pez) with some power supplys WITHOUT the 12v 4pin connector being used with success...to my knowledge though, it was with beefy power supplies...not 150 watters...to answer your question, it has been done (i.e. P4's running without 4pin connector being used)
 
i worked at hp this summer. the systems seemed to work somewhat ok when the atx 12v wasnt hooked up, but it would give us a warning beep to stick it back in.


that was on a 125 watt p4 spec'd powersupply mind you. i'm pretty sure it will work. we were running this on willamette 1.7 ghz.
 
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