Comparison of two power supplies, same PCB number

[japlytic]

Today, I got a case with a P4-400W power supply with cables that look thinner than the ATX-320T unit bought in a case 2 years ago.

So I decided to compare them:

In common: PCB number is ATX-320T with C-Tick number N 10830, gauge of wires for drives is 20AWG .
+5VSB output capacitors: 470uF 16V before and after output inductors (CD288).
10A 40V rectifier on +12V rail.
20A 40V rectifiers on +5V and +3.3V rails.

Model ATX-320T (late 2004) vs. Model P4-400W (late 2006):

Primaries: 470uF 200V 105C vs. 330 uF 200V 85C
Primary rectifiers: 3A 1000V x4 vs 2.5A 600V x4
X-class capacitor: 0.22uF vs. 0.1uF
Output inductors: +12/+5/+3.3V vs. none (shunted)
+12V output capacitors: 220uF 16V before inductor with 1000uF 16V after it vs. 1000uF 16V (CD288)
+5V output capacitors: 220uF 16V before inductor with 3300uF 10V after it vs. 2200uF 10V (CD288)
+3.3V output capacitors: 220uF 16V before inductor with 1000uF 10V after it vs. 1000uF 10V (CD288)
Wire gauge for mainboard +12/ATX +12/+5/+3.3/GND: 18AWG vs. 20AWG, not to mention that the heatsinks in the P4-400W were thinner than the ATX-320T

Where is build quality going today?

[Rainbow]

Re: Comparison of two power supplies, same PCB number

What's brand (if any) of the PSUs? Any photos?
I've been testing repaired ASRock P4i48 board recently (blown MOSFETs). It's crap powering P4 CPU from 5V line. With SkyHawk 250W PSU, it worked but 12V line get more than 12.6V high. So I tried with EverPower 400W PSU (does not look bad inside, has 5V and 3.3V sense wires going from the ATX connector) - and 12V line was around 12.6V too. Finally, took 200W DTK (Macron Power) - 12V was jumping a bit around with CPU load but never got above 12.5V, 5V was always in 4.99-5.10V window.

[japlytic]

Re: Comparison of two power supplies, same PCB number

Both of these supplies came from a Tsunami case, and look like https://www.badcaps.net/forum/showth...light=atx-320t