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GTX 560 ti 448 2 12V rails at 20A

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  • Graphics Cards
  • Gtx
  • Graphics
  • Product
Last response: in Graphics & Displays
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March 13, 2012 4:52:15 PM

I'm considering buying the GTX 560 ti 448 but I'm curious about its power requirements. Since the card requires two 6-pin connectors on a minimum 38A rail, will a PSU with multiple 12V rails at 20A will be sufficient for the card to run at its peak stock efficiency? Also, when a graphics card requires a minimum of X amps, will it ever draw more amperage than that under load? (Overclocking aside.)

More about : gtx 560 448 12v rails 20a

a c 254 U Graphics card
March 13, 2012 5:04:42 PM

That's the reason for the two 6 pin connectors so it can get the amps needed and it may consume more watts if overclocked or under 100% load. The rating is for 100% load and that's what it needs for that.
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March 13, 2012 5:11:11 PM

Thanks for the fast reply. So the answer is, yes, a power supply with four 20amp rails will be sufficient?
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a c 254 U Graphics card
March 13, 2012 5:16:17 PM

What exactly is the power supply that you have?
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a b U Graphics card
March 13, 2012 5:21:30 PM

AdmiralAckbar said:
I'm considering buying the GTX 560 ti 448 but I'm curious about its power requirements. Since the card requires two 6-pin connectors on a minimum 38A rail, will a PSU with multiple 12V rails at 20A will be sufficient for the card to run at its peak stock efficiency? Also, when a graphics card requires a minimum of X amps, will it ever draw more amperage than that under load? (Overclocking aside.)

1. It's a manufacturer reccomendation not a set in stone requirement ( 'cept for the 2x 6 pin connector's )
2. It's total 12v output of the psu not single rail output
3. Multiple 20a rails ? What's the combined output ? Usually find it on the label, or you could say which psu you have

Too slow by 11 seconds :( 
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a c 254 U Graphics card
March 13, 2012 5:25:36 PM

You should have no problems running that video card with your power supply , you have more than enough power.
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March 13, 2012 5:32:42 PM

Thanks for the input everyone. It's rather embarrassing having to ask such a question as a sys admin but I've honestly never looked into the details of PSUs (never had to really). Given the age of my PSU I thought it best to ask.

Thanks again! ...Now I'm off to brush up on PSUs! :) 
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March 13, 2012 5:32:50 PM

Best answer selected by AdmiralAckbar.
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a c 254 U Graphics card
March 13, 2012 5:48:43 PM

It's always better to ask then try to do something your not familisr with and maybe damage the part. I have answered a lot of questions here at Tom's but when I'm not sure about something I don't hesitate to post a question here.
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a c 274 U Graphics card
March 13, 2012 8:01:30 PM

This topic has been closed by Mousemonkey
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