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A very simple question about SLI

post #1 of 15
8/20/12 at 8:23pm
Thread Starter 
Hello there, I've recently bought a custom rig and I was thinking about adding a second 570 Fermi but before doing so, I'd like to know if it is possible to run 1 card on a x16 slot and the other one on a x8 slot and still be able to run them in sli? I know this question has probably already been answered a million times but for some reason, google couldn't give me an answer...
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post #2 of 15
8/20/12 at 8:25pm
Yep, no problem. The only problem with SLI is you must use the same GPUs, which you've got covered.
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post #3 of 15
8/20/12 at 8:59pm
Thread Starter 
Great, that's exactly what I wanted to know! Thanks a bunch!
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post #4 of 15
8/20/12 at 9:14pm
Thread Starter 
And by the way, once I have installed the new 570, what is the first thing I have to do?
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post #5 of 15
8/20/12 at 9:17pm
Well make sure drivers are up to date, then enable SLI via the nvidia console. It's very simple to do.
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post #6 of 15
8/20/12 at 9:18pm
And make sure u attach the sli bridge thumb.gif
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post #7 of 15
8/20/12 at 9:22pm
Will look like this,



Then just enable it. Pretty simple. Not all games support SLI very well though, generally driver updates will fix these issues. Most games run wonderfully. For FPS games I disable SLI though as it has a tendency to introduce more input lag due to needing to buffer extra frames because of the second card from my understanding. Doesn't really matter if you play casually though. Someone can correct me if I am wrong, I have just heard this from others, not sure if it is 100% true or not.
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post #8 of 15
8/20/12 at 9:38pm
Thread Starter 
Thanks guys, I appreciate the help. Is it normal that there is no "Configure SLI, Surround, PhysX" in my nvidia control panel? The option I have instead is "Set PhysX configuration". biggrin.gif
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My beast (1620$)
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CPUMotherboardGraphicsRAM
Intel core i7 3770k 3.50Ghz Asus P8Z77-V Pro EVGA GTX 570 Fermi 3.8 Ghz 2.5 GB 8GB (2X4GB) Corsair Vengeance Red 1866 Mhz (low... 
Hard DriveOptical DriveCoolingOS
Western Digital Black Caviar 1 TB ASUS DRW-24B1ST Noctua NHD-14 Windows 7 Home premium 64 bit. 
MonitorPowerCaseMouse
Samsung S24B350 24" XFX PRO850W XXX Edition (modular) Antec Eleven Hundred XL-ATX Cyborg R.A.T 5 
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post #9 of 15
8/21/12 at 3:03am
I believe it doesn't become active until you actually have SLI cards installed.
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Western Digital 1TB HDD 7200RPM Caviar Black M4 Crucial 128GB SSD(boot Drive) LG Blue Ray Player Corsair H100 with 4 Cougar vortex fans push/pull 
OSMonitorKeyboardPower
Windows 7 Home Premium 64bit Asus VG278H 3D 120HZ monitor CM QuickFirePro(Cherry Brown) and CMquickFire R... OCZ 1000W Full Modular 80+Gold 
CaseMouseMouse PadAudio
Cooler Master HAF X 942 Cooler Master Recon PureTrak Talent + SteelSeries QCK Heavy Logitech Z623 
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CPUMotherboardGraphicsRAM
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Hard DriveHard DriveOptical DriveCooling
Western Digital 1TB HDD 7200RPM Caviar Black M4 Crucial 128GB SSD(boot Drive) LG Blue Ray Player Corsair H100 with 4 Cougar vortex fans push/pull 
OSMonitorKeyboardPower
Windows 7 Home Premium 64bit Asus VG278H 3D 120HZ monitor CM QuickFirePro(Cherry Brown) and CMquickFire R... OCZ 1000W Full Modular 80+Gold 
CaseMouseMouse PadAudio
Cooler Master HAF X 942 Cooler Master Recon PureTrak Talent + SteelSeries QCK Heavy Logitech Z623 
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Audio Technica ATH-AD700 Open Air Dynamic headp... Asus Xonar DGX PCI-E sound card Zalman clip on headphone mic 
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post #10 of 15
8/21/12 at 3:20am
You need an SLI bridge! If you don't it wont be recognised as two working together!
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