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SLI question

post #1 of 17
Thread Starter 
Ok I currently have a 9600 GT and it is overclocked. I am ordering another one next week and plan on overclocking it to the exact same specs as I have now becuse I want to SLI. I am just a bit confused on how the settings will stick to both cards. Because if I understand right, you have to install both cards, put in the bridge, and then install ONE set of video card drivers. The comp actually sees both cards as one card. Am I right on this?


I just want to make sure that I can OC both cards and have them SLI correctly. I dont want only the settings for one card to stick and then have th OS end up clocking down my other card to match the slower one.


Also, after reading the label on my PSU, it seems that it says something like 500w max voltage on the little chart sticker. Now I dont know if I am reading it wrong or what, because it seems to be a very high end power supply. I just want to make sure I have enough juice to run in SLI.

Thank you in advance.

*Sorry I dont have a sig up yet. I just made this account and am at work*
post #2 of 17
500w will be pushing it. Usually 750 is recommended for SLI with 8 and 9 series. As far as OCing them goes I'm not really sure but the vid mem will be clocked at which ever card is slower, so if only one is OCed you will only be using w/e vid mem the 2nd one has. hope that wasnt too confusing.
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post #3 of 17
I think a 500w would be fine with 2x 9600GT's if its a quality PSU. I guess the only way to find out is to see if it runs, supposedly my system is pulling under 500w but not 100% sure
Edited by R@ZOR - 7/14/08 at 4:41pm
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post #4 of 17
Look more at what the amperage rating is, rather than wattage. For example, EVGA lists the requirements for their 9600GT:

Quote:
Minimum of a 400 Watt power supply.
(Minimum recommended power supply with +12 Volt current rating of 26 Amps.)
Minimum 450 Watt for SLI mode system.
(Minimum recommended power supply with +12 Volt current rating of 28 Amps.)
http://www.evga.com/products/moreInf...512-P3-N862-AR
    
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post #5 of 17
Use Rivatuner for overclocking, pushing 1 card will equalize the other - I tried this with my setup. It seems to really help pushing the core, as in 1k boost in 3DMark Vantage.
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post #6 of 17
Perhaps you can read the model/make of the power supply off the sticker and post back.

We can then give you a definitive answer as to whether your power supply can support SLI.
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post #7 of 17
Thread Starter 
I have an Ultra 500 watt modular power supply rated at 30 amps. I am think about buying a 950 watt power supply because I over clocked last night and i kept getting blue screens. I think its the supply. Is 950 enough or should I go to 1000? Thanks
post #8 of 17
you can get a quality 750w psu and run an SLI rig.

this one comes highly recommended by OCN users
http://www.newegg.com/Product/Produc...82E16817139006


the one i use in my sig rig and i haven't had any problems with my pc power wise.
http://www.newegg.com/Product/Produc...82E16817703009
post #9 of 17
i think you will be just cutting it for Sli, if i were you i would get a new PSU. I know i kept getting BSOD's on my old 500 watt PSu with 2 8800gt's.
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post #10 of 17
Thread Starter 
Ok so 950 or 1000? Any suggestions on which brands to stay away from? Is SLI even worth it at 1680x1050? From what I understand it only applys to super high resolustions. Here let me list my specs and tell me what you think:


q6600 stock speed
4 gigs of "sli" ready OCZ ram (was thinking of bumping this to 8 just cause)
9600gt (was going to sli very soon)
laptop 5400 rpm 250 gb sata hard drive LOL
2000 dpi laser mouse
upping power supply to whatever you guys suggest
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