GTX 570 and PSU

[bdvtheone]

Hi Everyone,

Please excuse me, but my knowledge of power supplies is limited.
I have a Sparkle GTX 570 GPU (http://sparkletw.com/products/geforce-gtx-570-oc/)

According to the box i need the following requirements on the PSU:

550WATT with a minimum rating of (38A)5

My current PSU is the following:

http://www.fsp-group.com/english/1_product/2_detail.asp?mainid=1&fid=149&proid=579

When they say 38A, do they mean per 12V rail, or do they mean in total? Or will my current PSU be sufficient?

System Specs

Intel® Desktop Board DP67BG
Intel 2600K
Kingston 8GB DDR III 1333
2 x Seagate Baracuda 1TB
1 x 128GB Kingston SSD

 

[bwf1975]

from my knowledge should be ok, be is very cheap generic psu, you have nice system there, really should invest in nice antec, seasonic, corsair psu, especially if you going to turn games right up and load up cheap psu to max is asking for trouble

 

[blakbird24]

I had a Silverstone ST-65ZF that was a 4-rail 650W unit...same per-rail ratings as yours. Then I bought an EVGA GTX 570, and the PSU couldn't cut it. If your PSU has two sets of PCI-Express connectors, and they are on different rails (therefore, each set has 18A available to it), you could probably get away with using one connector from each set. However, my PSU did not have this. So I ended up upgrading to a Corsair AX750, which is a single-rail unit with 62A at 12V output. Works great.

 

[bdvtheone]

I had a Silverstone ST-65ZF that was a 4-rail 650W unit...same per-rail ratings as yours. Then I bought an EVGA GTX 570, and the PSU couldn't cut it. If your PSU has two sets of PCI-Express connectors, and they are on different rails (therefore, each set has 18A available to it), you could probably get away with using one connector from each set. However, my PSU did not have this. So I ended up upgrading to a Corsair AX750, which is a single-rail unit with 62A at 12V output. Works great.

Hi, thanks for the responses,

I have been running my system as is for the last 3 months without problems.
I only read the AMP requirements today and thought i better have a look.

The PSU has 1 x 6 Pin for PCI Express
The remaining PCI Express power comes from combining 2 x Rails ("IDE Rails") with a converter supplied with the graphics card.

I have been running Battlefield Bad Company 2 and Battlefield 3 maxed out since i built the PC.... with no erratic behavior what so ever.

My main concern is on the AMPS.....

I might look into getting the following:
http://www.coolermaster.com/product.php?product_id=6643#

 

[chesteracorgi]

On your PSU should be a metal tag/badge listing the power output by rail. At the cooler master site it lists one 12 V (volt) rail as 60 A (amp) for 720 W (watts). If your current 12 V rail is at or above 38 A it should be pleanty.

The FSP website doesn't give the proper stats. It looks like your current PSU is fine, but without being able to see the tag it is not possible to tell.

 

[bdvtheone]

Hi,

On my PSU, it lists the 12V Rails at 18A, there is a few 12V1 - 4
Should i be worried about the make? One of suppliers has been selling these PSU's for a couple of years because of the reliability....

 

[bwf1975]

For a tiny bit more money could get
http://www.overclockers.co.uk/showproduct.php?prodid=CA-038-CS&groupid=701&catid=123&subcat=1084
I use this myself, with seasonic internals, fantastic quality and all power you need with x4 6+2 pin gpu power plugs.

 

[StealthArsenal]

Look at the Antec High Current Gamer series. You will not have current issues with those power supplies. The HCG750 has 40 amps per rail (4 rails).