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PSU 12V Rails

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July 27, 2009 8:24:09 AM

Hello,
I was wondering if a 385W PSU with dual 12V rails is fine for a video card that wants 26A from 12V (Nvidia 9600GT).
I'll give you the specifications of the rails
12V1 rating 14A
12V2 rating 13A
Thanks a lot

More about : psu 12v rails

a b ) Power supply
a b U Graphics card
July 27, 2009 9:07:16 AM

It might work. I recommend antec, corsair, pc power and cooling, seasonic, ocz, or enermax. All are fairly conservatively rated to work well under load for the specs, while cheaper brands may be overated and die under load. I had one die in just 4 days.
July 27, 2009 10:07:31 AM

o1die said:
It might work. I recommend antec, corsair, pc power and cooling, seasonic, ocz, or enermax. All are fairly conservatively rated to work well under load for the specs, while cheaper brands may be overated and die under load. I had one die in just 4 days.


Could it really just die? I mean, I do have 27A with both rails, and I have a crap PC,
A Core2Duo 2.2, 1.5Gig DDR2 Ram, A crappy motherboard, 1 DVD Writer and an Nvidia 7200GS that I will kick out when I get the 9600GT, that's all, nothing special. I think the PSU I have should be fine with the card, I just need some confirmation.

I'm sure the ATI HD4670 would work, cause it does not consume so much power. And I'm on a low budget and want to the the cheapest possible 256-bit memory interface card, so because of that I ruled out the 4670.
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a c 243 ) Power supply
a b U Graphics card
a b Î Nvidia
July 27, 2009 10:29:11 AM

devinb said:
Could it really just die?


It's possible, even with a good brand ( though less likely ).
What brand is your psu ?
July 27, 2009 10:38:40 AM

delluser1 said:
It's possible, even with a good brand ( though less likely ).
What brand is your psu ?


Don't know, but could this help?
a b ) Power supply
a b U Graphics card
July 27, 2009 11:30:23 AM

Look at your combined power. 385 watts total minus the 130 watts on the 3 & 5 volt rails leaves only 255 watts available on the 12 volt rails. divide 255 watts by 12 volts and you get 21.25 amps, to power your CPU, HDs, optical disks, and the Vid card. I think you will be cuting it too close.
a c 243 ) Power supply
a b U Graphics card
a b Î Nvidia
July 27, 2009 12:04:51 PM

clarkjd said:
Look at your combined power. 385 watts total minus the 130 watts on the 3 & 5 volt rails leaves only 255 watts available on the 12 volt rails. divide 255 watts by 12 volts and you get 21.25 amps, to power your CPU, HDs, optical disks, and the Vid card. I think you will be cuting it too close.

My system use's less than 20 amps of 12v power under load ( Furmark and Prime, CPU clocked at 4.0 ), the OP has a card that use's around 7 amps less power than my 260 at stock clocks.
It depends more on the quality of his psu than the seemingly low 12v output, people run the 9600GT on 300 watt 19 amp Dell psu's without problems.
July 27, 2009 12:12:53 PM

delluser1 said:
My system use's less than 20 amps of 12v power under load ( Furmark and Prime, CPU clocked at 4.0 ), the OP has a card that use's around 7 amps less power than my 260 at stock clocks.
It depends more on the quality of his psu than the seemingly low 12v output, people run the 9600GT on 300 watt 19 amp Dell psu's without problems.


Well, it is a stock PSU and I don't expect much from it. However, being on a low buget, I want a good card. How much power does the card want?
a c 243 ) Power supply
a b U Graphics card
a b Î Nvidia
July 27, 2009 12:23:03 PM

devinb said:
How much power does the card want?

Around 6 amps.
July 27, 2009 12:39:16 PM

delluser1 said:
Around 6 amps.


So what should I do? Switch to a new power supply or card? I don't think I can get a 256-bit card as cheap as the 9600GT. I don't have much money for a new PSU either.
a c 164 ) Power supply
a c 235 U Graphics card
a b Î Nvidia
July 27, 2009 12:40:29 PM

devinb said:
Hello,
I was wondering if a 385W PSU with dual 12V rails is fine for a video card that wants 26A from 12V (Nvidia 9600GT).
I'll give you the specifications of the rails
12V1 rating 14A
12V2 rating 13A
Thanks a lot


did you already purchase the card, if not just get the energy efficient edition

http://en.expreview.com/2009/06/22/gigabyte-tries-out-a...

or the 9800GT version
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

a c 164 ) Power supply
a c 235 U Graphics card
a b Î Nvidia
July 27, 2009 1:07:32 PM

its a little less powerful but can still give you solid performance and runs on a 300w PSU, get a friend or family member to send it to you.
July 27, 2009 1:45:16 PM

ct1615 said:
the EE 9800GT and they ship worlwide

http://cgi.ebay.com/PNY-VCG98GTEE5XEB-XLR8-geforce-9800...


I like that, but I'm more concerned about return policies. In case it gets damaged.

*Edit:
Is there any ATI related card with a 256 memory interface that delivers slightly more or less performance to the 9600gt and requires less power?
a c 144 ) Power supply
a b U Graphics card
July 27, 2009 4:46:44 PM

devinb said:
Hello,
I was wondering if a 385W PSU with dual 12V rails is fine for a video card that wants 26A from 12V (Nvidia 9600GT).

That 26 amps is the recommended total system power needed. And that is usually overestimated because the video card manufacturer has no control over the quality of the PSU that you'll be using.

A 9600GT only needs 5 or 6 amps for itself. Forget the "green" video card. A power supply that is 80% efficient with active PFC will save more energy.
July 27, 2009 4:57:02 PM

this might help, I have an Antec earth watts 380 with two 17 amp 12v rails running
AMD 5000+ x2 @ 3.19 (just really can't get in any higher and thats with a 1.4 voltage)
9800GTX+
2gb memory @ 980
160gb hd
1 dvd r/rw

at load the whole thing only draws 300w
July 28, 2009 4:34:12 AM

jsc said:
That 26 amps is the recommended total system power needed. And that is usually overestimated because the video card manufacturer has no control over the quality of the PSU that you'll be using.

A 9600GT only needs 5 or 6 amps for itself. Forget the "green" video card. A power supply that is 80% efficient with active PFC will save more energy.


Quote:
DellUser1 wrote :

It's possible, even with a good brand ( though less likely ).
What brand is your psu ?


Okay. Its a Mercury AP-2400 400W
a c 144 ) Power supply
a b U Graphics card
July 28, 2009 4:55:36 PM

One step above junk.
a c 243 ) Power supply
a b U Graphics card
a b Î Nvidia
July 28, 2009 5:03:29 PM

jsc said:
One step above junk.

That 's giving it more credit than it deserve's.
July 29, 2009 11:14:05 AM

Quote:
One step above junk.


delluser1 said:
That 's giving it more credit than it deserve's.


Thanks. That makes me feel a lot better.
How about a CoolerMaster 500W ExtremePower SMPS? Is it fine? It's cheap and I like it.

Edit*:
I have an extra LCD monitor (17") and projector with a VGA input, will a DVI-VGA adapter be provided with the card or do I have to buy it separately?
Thanks again
a c 243 ) Power supply
a b U Graphics card
a b Î Nvidia
July 29, 2009 11:29:46 AM

I wouldn't call the CM600 fine, it should do for your configuration but an Antec 380 would also and is usually less expensive than the CM600.
We're not talking quantity here, we're talking quality.
July 29, 2009 12:03:31 PM

delluser1 said:
I wouldn't call the CM600 fine, it should do for your configuration but an Antec 380 would also and is usually less expensive than the CM600.
We're not talking quantity here, we're talking quality.


I see, but I mean the 500W if it's necessary, I'll get the 600W.

And now I'm buying a new PSU, I want to overclock the 9600GT, or I'll up my budget and get a 9800GT and OC (once in a while, not all the time) it as well, because getting a new power supply makes me want to do more than I initially wanted.
Could the CM500/600 allow the 9600GT or 9800GT to perform well on a standard over-clock (not a very high/much)?
a c 243 ) Power supply
a b U Graphics card
a b Î Nvidia
July 29, 2009 12:09:30 PM

500 or 600 doesn't matter, they're just not that good in the quality department.
Either should work for your system, but that's not me making a reccomendation for them.
July 29, 2009 5:48:28 PM

delluser1 said:
500 or 600 doesn't matter, they're just not that good in the quality department.
Either should work for your system, but that's not me making a reccomendation for them.

So what do you recommend? Under 100 bucks (US$) (61-Pounds)?
A worldwide available brand, if you could.
!