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Antec BP550 Underrated? Only 384w on 12vrail.

post #1 of 31
Thread Starter 
My friend bought a BP 550 a few months back.

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371016&Tpk=bp%20550

Apparently the Antec BP550 modular has 3x 12v rails with:
12v1 22amps
12v2 22amps
12v3 25amps

However, the combined total watts for the 12v rail only 384w according to the sticker? (32 amps)

Isn't this ridiculously low?

From hardwaresecrets review, even the Antec BP500's 12v rails can deliver around 432watts (36 amps) and up t0 480watts when stressed (40 amps).

Is the Antec BP550's 12v rail wattage severely underrated or is it made by some sucky 3rd company which makes it way worse than the BP500?
post #2 of 31
More like it's overrated. It can do 550W, but only if you draw absurd amounts of power from the minor rails. It should be labeled at ~430W probably. It's a decent unit other than that, if kind of expensive. It's made by Delta by the way, so not a sucky company. It'll deliver what the sticker says, within ATX specs.
post #3 of 31
Thread Starter 
Hmmm, that's weird...
Why would an Antec BP550 perform significantly worse than an Antec BP500...

O:
post #4 of 31
That seems weird. Maybe it's not a true multi-rail design, but a split single rail.
 
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post #5 of 31
Thread Starter 
Quote:
Originally Posted by Nick0matic;12760140 
That seems weird. Maybe it's not a true multi-rail design, but a split single rail.

confused.gif
post #6 of 31
Quote:
Originally Posted by Nick0matic;12760140 
That seems weird. Maybe it's not a true multi-rail design, but a split single rail.

Nonsensical.


It's an ok unit, but I'd call it a 430W.
post #7 of 31
No, it has 424W on the 12V rails. I have seen two of these units used for client builds, and both had max 424W on the 12V rails as printed on the sticker. Must be a new rev, or Newegg has an old screenshot. Still pretty low, but a very decent power supply if at a good price still. I could get a screenshot - would take a few days since I'd have to stroll on over to my clients' houses and snap a pic, but could do if people really want.
Edited by xd_1771 - 3/16/11 at 6:55pm
post #8 of 31
Hi,

where did you see the 550 with 384W combined?

I have the specs here like:
BP550 Plus: 12V1/2/3 444W combined
BP500U: 12V1/2 384W combined

Or did I misunderstand you? Help me out please.

Christoph
post #9 of 31
Thread Starter 
Quote:
Originally Posted by Phaedrus2129;12760677 
Nonsensical.
It's an ok unit, but I'd call it a 430W.

So BP500 > BP550?

I've heard of companies re-labeling 400 watt PSUs to become 500watt PSUs, but I've never heard of a company labeling a weaker PSU as a higher wattage than a stronger PSU in the same lineup... >_<<br />
Antec labeling is epic fail...?
Quote:
Originally Posted by xd_1771;12760696 
No, it has 424W on the 12V rail. I have seen two of these units used for client builds, and both had 424W on the 12V rail as printed on the sticker. Must be a new rev, or Newegg has an old screenshot. Still pretty low, but a very decent power supply if at a good price still. I could get a screenshot - would take a few days since I'd have to stroll on over to my clients' houses and snap a pic, but could do if people really want.

The one my friend has says "12v rails max load 384 watts"

17-371-016-07.jpg
Edited by Bluescreendeath - 3/16/11 at 6:59pm
post #10 of 31
Quote:
Originally Posted by Phaedrus2129;12760677 
Nonsensical.


It's an ok unit, but I'd call it a 430W.

For what reason please?
Quote:
Originally Posted by Bluescreendeath;12760741 
The one my friend has says "12v rails max load 384 watts"

17-371-016-07.jpg

Uh that seems to be a very old unit. We did upgrade a fair while ago... It's this unit you talk about? All 550 Plus in the market are 444W.

Edit, I see the confusion now. Let me investigate quickly.

Christoph
Edited by Christoph@ANTEC - 3/16/11 at 7:09pm
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