GTX 560 ti 448 2 12V rails at 20A

[AdmiralAckbar]

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.)

 

[inzone]

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.

 

[joemama069]

get a PSU. 2 12v rails @ 20 amps gives you 40 amps... just over the 560's 38 amp requirement so you are gonna need more juice for all the other components. I hate psu's with multiple 12v rails for this reason http://www.tomshardware.com/forum/306437-28-single-rail-multiple-rails-eternal-question-answered but this PSU should do the trick just fine http://www.tomshardware.com/forum/306437-28-single-rail-multiple-rails-eternal-question-answered

 

[AdmiralAckbar]

Thanks for the fast reply. So the answer is, yes, a power supply with four 20amp rails will be sufficient?

 

[AdmiralAckbar]

get a PSU. 2 12v rails @ 20 amps gives you 40 amps... just over the 560's 38 amp requirement so you are gonna need more juice for all the other components. I hate psu's with multiple 12v rails for this reason http://www.tomshardware.com/forum/306437-28-single-rail-multiple-rails-eternal-question-answered but this PSU should do the trick just fine http://www.tomshardware.com/forum/306437-28-single-rail-multiple-rails-eternal-question-answered

Fortunately, the PSU has 4 rails at 20 amps.

 

[inzone]

What exactly is the power supply that you have?

 

[AdmiralAckbar]

http://www.newegg.com/Product/Product.aspx?Item=N82E16817379006

Yes, it's old but it's been a champ.

 

[delluser1]

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

 

[inzone]

You should have no problems running that video card with your power supply , you have more than enough power.

 

[joemama069]

http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=3276567&CatId=2533 been running strong for 4 years... it runs a regular 560ti, 2500k @ 4.5, 2 WD velociraptors 1tb WD black and an optical drive... i know i make it scream in pain cause im sure its the bare minimum for my system

 

[AdmiralAckbar]

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!

 

[AdmiralAckbar]

Best answer selected by AdmiralAckbar.

 

[inzone]

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.

 

[Mousemonkey]

This topic has been closed by Mousemonkey