Antec PP-412X vs Antec PP-403X on the 8KHA+

[5150Joker]

I was reading another thread on the forum and a poster mentioned that he specifically picked up an Antec PP-403x power supply rather than a PP-412X since that is what was recommended by AMD's website. However, both are 400 watts and AMD/Intel compliant, so is there any significant difference in their peformance when using them with athlon xp chips? In my case, I've got the antec 1040 case and the pp-412x supply and I run about 4.86-4.89 volts both when my system is overclocked (1680 mhz) and not. Would I get better results with a PP-403x?

[BobyJo]

I purchased the PP403X mainly because this is the only Antec PS listed on the AMD's approved list.

But I understand the 412 is the same PS, with a connector for the P4 Intel mobo.

The 403 does not have this extra connector. Therefore I don't think there would be any difference between the performance of either.

My 5v rail is running at 5.37v and the 3.3v rail is 3.26v. The 12v line is 11.80v est..

I am happy with the PS. and do not intend to mod it in any way. I would think the 412 PS would be comperable.

[K6-III]

The 412 has a better grille in the back as well. Nice pretty chrome grille to go with the decor of a modded case.

[5150Joker]

Well from the looks of it, your pp-403x has a higher +5v line than mine does (i never hit 5 volts). Not sure how much that'd effect o/c'ing though since mine's at 4.91 volts @1680 mhz.

[BobyJo]

Specs are + - 5% so I think you should be OK.

[Jen]

for myself i had a antec 403 . reason i bought it was to get my 5 volt line more stable and hopefully higher than my topower 400 watter. what i got was something less than expected as it wasnt as good as my topower that i had.

Jen

[5150Joker]

How much do you get on your 5 volt Jen?

[BobyJo]

I have never had a Top Power PS, but I just assumed since they were pretty expensive, they were the better one.

The Antec is pretty good, but not the most expensive by any means. The PP403X I purchased was $71.00 + s&h.

A lot of the hi-end and expensive ps are in the $150-$200 range. I think most of these have pots that can be adjusted for the 5v & 3.3v rails. I have read about this, and the adjustment is off the 12v feeder line.

[Jen]

Originally posted by 5150Joker
How much do you get on your 5 volt Jen?

with the antec 403 i was getting under load 4.83 on the 5 volt line.


with the topower 400 watter i was getting 4.86 under full load.


on a generic compusa 500 watter it was like 4.63 under load.......without load it was 4.75.......


with my pcpower and cooling 450 watter i get under load 4.93 ..........without load it is 4.95.


Jen

[5150Joker]

Ok I'm getting about 4.89-4.92 at idle and 4.86 load with the pp-412x i'm using and that's with the cpu overclocked at 1680. The +3.3 volt reads about 3.22 volts which seems within 5%. I wonder if turning up the voltage for the +5 and +3 would make any difference if I were to try to overclock any further?

[BobyJo]

If I understand this, these 5v & 3.3v feed off the 12v line.

So you have to up the 12v by a pot in the powersupply, this in turn will raise the 5v and the 3.3v at the same time.

This is what I was reading on a OC'ers site. I don't know if I want to try this myself. Most persons do a voltage mod on the motherboard by working on the voltage regulater and not uping the 12v line at all.

You do this by sordering resistors from one pin to another on the mobo. This in turn will tell the regulator to furnish more power to the 5v or 3.3v rail, which ever one you are working on.

The Epox guy says the voltage regulater has an overvoltage fail safe device that will reduce the overall output of the PS if these feeder lines are too high.

I really think this is getting to much involved for me, since I am not an electrical engineer.

[5150Joker]

Actually for the P-412X the pots for the 12v adjusts that and the 5 volt. The 3 volt has it's own pots that you can adjust. I opened mine up today and adjusted my 12v a little. Now at 1680 I get a stable 5.0 volts and 12.2 volts which is nice. The 3v seems a little low at 3.22 so I might adjust that later on. Making these adjustments didn't help in stablity or overclocking from what I gather so far. Guess my video card is the bottleneck since my system is stable at 150 fsb as long as I don't try to run quake2/3 or any other openGL games.

Anyone know wether or not the 303 has adjustable pots?

[5150Joker]

Well I raised the 3.3 volt line to 3.33 volts last night and still got reboots at 150 fsb when running quake 3. I guess it has to be either one of the 3 things: my memory, video card or cpu. I'd probably lean towards my memory or vid card as the likely suspects

[SPQQKY]

Strange, people with the Antec pp403x are getting lower readings than I am with a pp352x. My 5v rail is 5.01 idle and 4.89 when I OC to 1.68GHz (176MHz x 9.5). I have a lot of fans and goodies, too, including a Digi Doc 5, two Zerus twin turbo system coolers, a 92mm and 80mm fan on side panel and an 80mm in front. I also have a Maxtor 40 gig and 20 gig HDDs. All this on 350 watts.

[BobyJo]

It seems as though my readings are somewhat higher than most. I have the PP403X. See the post earlier in this thread. I have a lot of fans also, w/120mm panaflo in the side. 3 drives w/Radeon 8500, the mobo is a power monger also.

I am happy with this PS, and if others are getting lower power ratings, mayby they can adjust these.

The 403X as well as the 412X are adjustable.

Be sure you know what you are doing with this. These power settings are vital to your system.

[haus]

i have the pp-403x and these are my voltages from the bios







vio=3.29-3.39
vcore=1.82
+2.5v=2.68
vagp=1.55
vbat=3.15-3.16
12v=12.28-12.40
5vsb=5.59



are these good or are they to high


8kha+
xp 1700
g3 gts 64mb
2 hhd's
tdk cd/rw
creative 52x cd

Originally posted by eobard
Anyone know wether or not the 303 has adjustable pots?

Thanks for the replies people. For the record you can stop ingoring me and just go on pretending I'm not here now, I found the answer. The answer is moot, my 5v line on my new pp303x needs no adjustment.

[5150Joker]

Wow haus your 5 volt seems kinda high. Dunno if that's a bad thing but I adjusted mine to around 5.088.

Originally posted by 5150Joker
Wow haus your 5 volt seems kinda high.

Ditto on that, I'd cut it down to 5.25 at most if it were me.