Search
Sign in with
Sign up | Sign in

Sufficient SLI Power?

Tags:
Last response: in Graphics & Displays
Share

I have this kingwin 730 watt PSU. I'm having problems with games in full screen getting artifacts when sli is enabled. I'm thinking maybe I don't have enough power? My question is my power supply powerful enough to support my system?
System Specs:
Core i7 920
6gb ddr3 1333
2 GTX 280's
640GB WD hardrive
NEC DVD burner
MSI X58 Pro-e mobo
or does anyone know what may be causing the problem? I get no artifacts when disabling SLI or when i run the game in a window instead of fullscreen.

More about : sufficient sli power

Register or log in to remove
Graphics card Expert

Try each card one at a time and see if one of the cards are faulty. Its possible your temps are to high with both cards under load. What are temps? Can you give exact model of psu.
Related ressources
Ask the community

invisik said:
Try to reinstall drivers and see if that help. Do you have an extra psu you could use to test if your psu is failing to power the cards?

I'm currently on forceware 190.38 which i've reinstalled a couple of times but nothing changed. What do you guys think about either going to an older driver version or the beta 190.40? unfortunately no i don't have any extra power supplys. Any other suggestions?
Graphics card Master

Faulty bridge perhaps? Do you have another bridge that came with the other card you could try? Really you should have the bridge on there since that's what syncs the cards together.

I guess it must be faulty although I do not have another bridge to test out. Really disappointed if the bridge is faulty since I had to order it off ebay because neither my cards or mobo came with a sli bridge.

OvrClkr said:
True that... if you use both card's in Sli the bridge Must be attached or you are basically running a non-Sli setup...

I always thought so too but reading around I'm not so sure. my 3dmark vantage scores are nearly identical

masterjaw said:
Either the bridge is faulty or the PSU can't handle the SLI setup.

I'm thinking it's the psu too, but why can I still play games perfectly fine in windowed mode if my psu cant handle the sli set up?

I'm using a dvi to hdmi adapter to hook up to a sony 40 inch hdtv. i noticed that the dvi adapter has fewer pins than what looks like should plug in to the dvi input on the card. could this have anything to do with my problems? I'n just making stabs in the dark here.
Graphics card Expert

Even if the sli bridge is faulty no reason for artifacts. I ran my runs without the cable. Only affect lower fps but no crashes or artifacts. Psu problem in my opinion now.

Mousemonkey said:
Before running benchies, turn the Sli indicators on and if you are in SLI mode without the bridge and no visual corruption just go with it.

yep I'm in sli mode even without the bridge. I'll just go with this until I'm able to buy a new PSU.

Something else that's interesting, when i record the game getting artifacts using fraps the raw video shows no artifacts or graphic glitches. THIS post describes my exact problem. The poster resolved that removing the bridge was the only thing that worked for him and so far is the only thing that's worked for me.
Graphics card Master

pinkzeppelin97 said:
can anyone recommend a PSU manufacturer and wattage for dual gtx 280's and a core i7


This is what I would buy :

CORSAIR CMPSU-850TX 850W ATX12V 2.2 / EPS12V 2.91 SLI Ready CrossFire Ready Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

if you want modular......

CORSAIR CMPSU-850HX 850W ATX12V 2.3 / EPS12V 2.91 80 PLUS SILVER Certified Modular Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

========================================================================

waiting for the trolls to disagree and pull out the infamous PSU calc..... :whistle: 
Graphics card Master

OvrClkr said:
This is what I would buy :

CORSAIR CMPSU-850TX 850W ATX12V 2.2 / EPS12V 2.91 SLI Ready CrossFire Ready Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

if you want modular......

CORSAIR CMPSU-850HX 850W ATX12V 2.3 / EPS12V 2.91 80 PLUS SILVER Certified Modular Active PFC Power Supply
http://www.newegg.com/Product/Product.aspx?Item=N82E168...

========================================================================

waiting for the trolls to disagree and pull out the infamous PSU calc..... :whistle: 

I got there first! [:mousemonkey:3]
Register or log in to remove
 
Ask the community
Read discussions in other Graphics & Displays categories
!