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Will my PSU power an 8800gt+?

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August 13, 2009 2:18:39 AM

Hi guys,
I have been having a bit of trouble with researching amps and rails in regards to powering graphics cards. Everybody seems to have 1 or 2 rails so I can't find an answer regarding my PSU.

So my question is: Can an Antec True Power New TP3-550 watts with these specs:

+5V +3.3V +12V +12V +12V +12V -12V +5VSB
25A 25A 20A 20A 20A 20A 0.8A 3A


support an 8800gt, 8800gts/gtx, 9800gt, and anything around there. I'm really confused because my PSU has 4 12v rails of 20A each. No idea if that's not enough. If it is, would there be enough room left over for 2 hard drives, an e6600, 1 dvd drive, and 5 fans.



Any help would be very much appreciated.
Thank you for your time :) 

Cheers

More about : psu power 8800gt

August 13, 2009 2:32:08 AM

Let me add: the Antec TP3-550 is different than the Antec True Power Trio 550w, just so no-one looks it up and inspects the wrong one ;)  (The Trio has 3 x 12 volt rails as opposed to 4 on this one).
a b ) Power supply
a b U Graphics card
August 13, 2009 2:42:17 AM

more than enough. You can power two of them in Sli actually.
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August 13, 2009 2:50:59 AM

Awesome. But what I don't understand is: they say the 8800gt, for example, requires a 12V current rating of 26 A.
Mine has 20A, so how does it get worked out between multiple rails?

Any chance of a quick lesson?


Cheers dude.
a c 243 ) Power supply
a b U Graphics card
August 13, 2009 3:16:22 AM

chriswilson said:
Awesome. But what I don't understand is: they say the 8800gt, for example, requires a 12V current rating of 26 A.
Mine has 20A, so how does it get worked out between multiple rails?

The power reccomendation is for the entire system not just the card.
August 13, 2009 7:19:08 AM

Try to get a Corsair 520 or 620. Its got like 50Amps on 12V rail . and is also 80+.
That can power a single gtx295 as well with ease....
a b ) Power supply
August 13, 2009 8:37:07 AM

chriswilson said:
Mine has 20A, so how does it get worked out between multiple rails?

Any chance of a quick lesson?

Look at the label. Yours has a total of 45A on 12V.
a b ) Power supply
August 13, 2009 8:40:23 AM

thelivingflesh said:
Try to get a Corsair 520 or 620. Its got like 50Amps on 12V rail . and is also 80+.
That can power a single gtx295 as well with ease....

The TruePower New 550 is at least as good as the HX520/620, as well as more efficient. It can also easily power a GTX295.
August 13, 2009 9:11:15 AM

theAnimal said:
Look at the label. Yours has a total of 45A on 12V.


Thanks for your answers dude. But I was wondering how you get 45A on 12V from this:

+5V +3.3V +12V +12V +12V +12V -12V +5VSB
25A 25A 20A 20A 20A 20A 0.8A 3A


I can't find it saying the total anywhere... Would that sort of info be in the manual or something, or do you work it out using division?

Sorry to be a hassle, I just want to finally learn something about power supplies...

Thanks,
a b ) Power supply
August 13, 2009 9:18:45 AM

chriswilson said:
Thanks for your answers dude. But I was wondering how you get 45A on 12V from this:

+5V +3.3V +12V +12V +12V +12V -12V +5VSB
25A 25A 20A 20A 20A 20A 0.8A 3A


I can't find it saying the total anywhere... Would that sort of info be in the manual or something, or do you work it out using division?

It is on the label. Underneath the chart it says "+12V1, +12V2, +12V3 & +12V4 max load...45A"

Quote:
Sorry to be a hassle, I just want to finally learn something about power supplies...

I'd highly recommend starting by reading reviews at jonnyguru.com.
a b ) Power supply
a c 272 U Graphics card
August 13, 2009 9:20:07 AM

theAnimal said:
The TruePower New 550 is at least as good as the HX520/620, as well as more efficient. It can also easily power a GTX295.

Does it also have a five year warranty as well though?
a b ) Power supply
August 13, 2009 9:27:35 AM

Mousemonkey said:
Does it also have a five year warranty as well though?

Yes.
August 13, 2009 9:36:14 AM

Mousemonkey said:
Does it also have a five year warranty as well though?


Yeah man, it's not a bad power supply. $150 so it's not cheap and nasty, weighs a tonne which is always a good sign, energy efficient, 50% more quiet, sli capable. Can't go wrong really.


edit: that's 150 AUD, realised this is probably a united states forum so in your currency it's about 120 odd.
a b ) Power supply
a c 272 U Graphics card
August 13, 2009 9:36:46 AM

theAnimal said:
Yes.

Oooohh, I shall have to investigate further (what's not to like about a five year warranty?).
a c 124 ) Power supply
a c 197 U Graphics card
August 13, 2009 9:45:19 AM

In addition to the reviews at jonnyguru.com, there are reviews and tutorial articles at www.hardwaresecrets.com also.
August 13, 2009 9:47:21 AM

Onus said:
In addition to the reviews at jonnyguru.com, there are reviews and tutorial articles at www.hardwaresecrets.com also.


Thanks for that dude. Will look into it.
August 13, 2009 9:47:48 AM

Mousemonkey said:
Oooohh, I shall have to investigate further (what's not to like about a five year warranty?).


Also black in color and half-modular which is nice.
a c 124 ) Power supply
a c 197 U Graphics card
August 13, 2009 1:58:51 PM

The TruePower New line is apparently only a notch or so below their Signature series.
!