Getting another GTX570 to run SLI. Had some questions

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murble

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Oct 13, 2014
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Im looking at upgrading my current system by getting another gtx570 and running sli.

My current system is:
Asrock Z77 OC formula
i7 2600k ~ 4.0 ghz
Gigabyte gtx570 oc (GV-N570Oc-13I)
Cooler master GX 750w PSU

I found a Gigabyte gtx570 Super overclock (GV-N570SO-13I) for real cheap and had a few questions about using this with my system.

1) Would I safely be able to overclock my current gtx570 to 845mhz to match the specs of the super overclock card, and run both cards at that, or would my new card be limited to my current card's performance?

2)Im assuming i would need to upgrade my power supply in order to run both cards safely. Would an 850w PSU be sufficient or should I go with a 900w/1000w to be on the safe side?

3) what game performance can I expect to see with both cards? I'm currently getting around 40fps playing shadow of mordor at medium texture quality/high everything else.

4) what limitations would my system have with this setup ?

Thanks for your time.
 
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17seconds
You should be able to overclock your slower card to match the speed of the Gigabyte card. The default clock speed for both will be the slower of the two. I would shoot for a minimum 850 watt quality PSU, maybe more since overclocking will be happening.

Here is Guru3D's power supply recommendation:
GeForce GTX 570
On your average system the card requires you to have a 600 Watt power supply unit.

GeForce GTX 570 in 2-way SLI
A second card requires you to add another ~225 Watts. You need a 750+ Watt power supply unit if you use it in a high-end system (800+ to a KiloWatt is recommended if you plan on any overclocking).
http://www.guru3d.com/articles_pages/geforce_gtx_570_sli_review,13.html


Your performance should be roughly similar...
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sammy sung

sammy sung

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May 5, 2014
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The recommended wattage for 2x GTX 570 is about 800W. However a 570 has a TDP of 219, which combined with your system should be in the neighborhood of 630-640W. Sounds like you'll be doing some overclocking though, so an 800-900W power supply should be more than enough headroom
 
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17seconds

17seconds

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Jul 27, 2010
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You should be able to overclock your slower card to match the speed of the Gigabyte card. The default clock speed for both will be the slower of the two. I would shoot for a minimum 850 watt quality PSU, maybe more since overclocking will be happening.

Here is Guru3D's power supply recommendation:
GeForce GTX 570
On your average system the card requires you to have a 600 Watt power supply unit.

GeForce GTX 570 in 2-way SLI
A second card requires you to add another ~225 Watts. You need a 750+ Watt power supply unit if you use it in a high-end system (800+ to a KiloWatt is recommended if you plan on any overclocking).
http://www.guru3d.com/articles_pages/geforce_gtx_570_sli_review,13.html


Your performance should be roughly similar to a GTX 590, with overclocking maybe slightly more.

perfrel_1920.gif

http://www.guru3d.com/articles_pages/geforce_gtx_570_sli_review,13.html
 
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