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Question about replacing older computers power supplies (atx 1.3) - Page 2

post #11 of 15
Thread Starter 
are there p4 systems with atx 1.3 or was it 2.0 by then?


We really dont get hardly any PIII machines anymore (no suprise there lol) but we do get some AXP machines still
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post #12 of 15
Very, very, very early Pentium 4 were ATX 1.3, you know the very first Willamette systems, but there weren't too many of those. Most Pentium 4s are Northwood or Prescott, and those are firmly ATX12V 1.x.
post #13 of 15
Thread Starter 
Ok so you said its probably a bad idea on the high end pIII systems but what about a run of the mill AXP system?

keep in mind these are just average web browsing machines and not really gaming machines nor are they overclocked
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post #14 of 15
Some of the nVidia NF2 based Athlon XP systems are a bit more +12V heavy and might barely squeak by on a modern unit. But I don't recommend it. I tried running an Athlon XP 2600+ in an Asus A7N8X (NF2) with a Radeon 9800 Pro off of an Antec Earthwatts EA430, which is a decent SeaSonic-made unit. +12V was running out of spec at 12.62V and the +5V was close to spec at 4.78V. The system was unstable and would crash under load. Keep in mind, the PSU was healthy; running a C2Q Q9550 and a HD4870 the voltages were 12.14V and 5.08V.

Swapped the Antec for a Zippy ATX 300W unit that ran 12.35V and 4.98V and the instability went away.
post #15 of 15
Thread Starter 
Cool thanks Phaedrus.

I suppose if they have a machine that old its probably time to think about a new one
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