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POWMAX 500W PS 63.00 Read inside. some good INFO!

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I found this from a link on another thread, this link for recommended AMD XP power supplies is what an XP needs for power.

This is what you should look for with an XP:
+5V current should quote 35 to 45 amps (45A)
+12v current should quote 18 amps or more (18A)
+3.3V current should quote 28 amps or more (28A)

Can anybody confirm if the POWMAX falls within the listed requirements?
 
I just got one from Ubid. I really don't like Ubid but I got it for $46. The shipping is crazy, they want $14. But I guess it still cheaper then most places.
 

I bought one. This PSU is a POS. They play games with the stated amperage. The only two rails that
really count are the +5 and +3.3. These two can only do so much COMBINED, not their actual max
INDIVIDUALLY.
The TCO on this "500W" unit is 180. The "431W" Enermax is 220. I consider this thing a ratings scam.
When you turn on a computer, theres a huge surge that the PS must accomodate.
PS units also get weaker with age as they "burn in".

Cheers!!
 

Exactly.

The most powerful and finest PS (mainstream) you can buy today is the pcpowercooling Turbo-Cool 425 watter.
Unfortunately its also the most expensive. (Duh!) $169
But has up to 300W TCO capability.

link
 
eh... so isnt' this 500w power supply good for the money? the website states a 3.3v + 5.0v total watt at 250w...

so comparable to a 400watt antec which cost more than this.......

Who actually has one of these? Care to comment?

I plan on getting a 400watt version (powmax aka leadman - http://www.leadman.com.tw/ATXPOWER.htm)....

DC OUTPUT +3.3V +5V +12V -5V -12V +5Vsb Total
LP-6100D 35A 40A 18A 0.5A 0.8A 2.0A 400W
LP-6100D : +5V & +3.3V= 200W

According to the website, the 400watt has a 200w 3.3v+5.0v combined which looks good to me... At least it should be better than my Antec 300watt which only has 160w 3.3v+5.0v combined...

I'm running a EPOX 8kha+ with a Athlon XP 1700+ (overclocked to 1560mhz)... My cpu temp is 33C (36C under full load) with a 24-25C case temp. I KNOW i can go higher, but I think my psu is limiting me... Will the 400watt powmax allow me to overclock more?
 
The nice thing about the Enermax is the duel fan setup, its better for cooling AMD chips since it sucks the air right off the cpu area, as recommended by AMD. It may supply slightly less on the +3.3V and +5.0V rails but 220 or so is still plenty for AMD chips. Plus the Enermax PEG465P-VE(FC) 431W is hyped for being quiet but doing the job.

As far as the POWMAX 500W PS, it does seem to fall short on the 12v rail, current should quote 18 amps or more (18A) for AMD XP as I mentioned above, the POWMAX does 16A (according to member Ribbit's post above). This may be fine for other cpu's but not for XP'S.


I could be wrong since I admit to being new to power supply ratings, but I wouldn't risk it with an XP chip, especially if you plan on overclocking. Of couse, you don't have to worry about this if you are not using an AMD XP cpu or planning on upgrading to one.

*strange* Update: Did I see different numbers on the POWMAX website that was linked above from what I saw quoted as being stamped on the outside of POWMAX power supply?? WHAT'S UP WITH THAT!!@@@?????

 


<< so there you go greatwolf.


Cheers!!! >>



Thanx for the tutorial 🙂 that's more or less what I was looking for and it certainly clarified a bunch of things for me as far as PSU's go. It's a shame that there aren't more FAQs on the web for this vital piece of equipment (I haven't seen many anyway). Got one quick question for you though: you mention that the formula for calculating wattage is w=voltage*amp, but when you were doing the example a little after that, it seems you're multiplying wattage and amp to get voltage. Shouldn't you be dividing instead of multiplying if your calculating for voltage or amperage?

Thanx again
 
Ok first of all thanks to Bozo Galora for all the info. Now I would like to add a couple comments for anyone still concerned. I believe that the issue here is being clouded by the TCO printed on the 6100E label. After reading his post I checked and it is marked with 180w TCO. I noticed though, that the unit lists several different models on the label ranging from 300-500 watts. They just put a dot on the proper unit. All of these should not have the same TCO numbers, but only one number is listed on the unit. I have emailed KeyCom Enterprises, Inc. to see if we can get more info on the actual TCO for the unit in question. I also linked them to this thread. I believe that the figures on the website posted by Tr0LL are the correct one's as they list TCO's for the individual units. As soon as I hear back from them, I will post the results.
I would also like to add that the +12v is important if you are running several disk drives, which is my case having six of them at an aver. of 1.0a on that rail just to run. They can use twice that to spinup upon booting, so in my case that's 12.0a of +12v needed just for the drives to start. The logic for the drives would need 3.0a of +5v for the six. CDR and DVD drive motors need another 1.0a each of +12v and 1.0a of +5v for the logic boards. 8-10 fans would be around 1.0a of +12v. 4 PCI slots filled would be another 2.0a of +12v. So that puts me at using 17.0a of +12v at startup, if my estimates are correct. My Antec PP-303X (300 watts) lists 10a on the +12v rail, this unit shows 22a-25a on the +12v rail. The TCO on the Antec is 160, so the 180 is not a problem for me if that is what it is. I don't think that's right, though. That was the main basis for my decision to buy it.
 
Is there anyway to test the PSU in determining what the actual TCO is for it's +3.3 and +5 rails? The info and specs on this 500watt seems too inconsistent (some sites has it's TCO at 180watts, leadman.com.tw has it at 250watts, label on sleefer's 500w says 180 TCO) and I'm not sure if you can really trust what's printed on the label. Now I know testing it manually isn't going to be 100% accurate but it should give us a pretty good idea what this PSU's actually TCO really is. An approximation is good enough for me.
 
I bought a retail boxed Powmax/Leadman PS from CompGeeks about nine months ago. The power supply died within two months. Do a search for Powmax in google and you'll find similar threads about the inconsistent quality of their products.
 
Hey Bozo, I have another question about PSU. According to the PSU that's included with the chieftec case newegg.com is selling here for 69.99, the 300Watt Enhanced PSU that comes with it has a TCO of 220watts for +3.3 and +5 rails! Since their TCO is the same, does that mean that this Enhance 300watt psu is as good as the 400watt enermax (the 3.3 and 5 are the most important like you have said)? Though the max output for +3.3 and +5 on the enhance is lower compared to the 400watt enermax. So how should I be looking at this?

Thanx
 
I got the power supply running right now....

As of right now, its crunching Prime95 for about half an hour know, i also did 3dmark2001 looping for about 30mins

The Vio ---3.49v
the +5 --- 4.97v
the .12 ---11.86v
the agp --- 1.49v
the ddr ---2.54v
the vsb ---4.85v
the vbat ---3.10v

 
i think its really within specs...

here is my rig specs!
AMD XP1700+ @ 1670mhz using Alpha 8045 with 50cfm sunon 80mm fan
Maxtor 7200rpm ATA133
Abit KR7A-RAID
Creative Labs 48x cdrom
SBlive Audigy
Firewire card
Netgear 10/100NIC
ATI radeon DDR 64mb 163/163
4 sunon 39cfm 80mm case fans...
 
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