SLI Question Tags: Graphics Cards Nvidia PCI Compatibility SLI Graphics Last response: January 21, 2011 1:09 PM in Graphics & Displays Share amitchelltech January 20, 2011 6:34:38 PM Could a Nvidia PCI 512mb 9500gt and a PCIE2.0 512mb 9500gt video card be linked through SLI? Or are they not compatible due to the interface types? Much Appreciated. More about : sli question borisof007 a b U Graphics card January 20, 2011 8:48:37 PM Not compatible due to interface types. The cards have to be the same, e.g., same interface type, model, vram size, and speed! If one card is OC'd and one is not, the OC card will underclock to the other card's speed (I think, I'm pretty certain this is true). accolite January 20, 2011 9:01:59 PM PCIE 2.0 cards are backwards compatible. So it should work, they just have to be the same gpu, if one has less/ diff. ram/speed than the other the sli system uses the lower value for both. Related resources Question about Bottleneck with upcomming GeForce Titans Sli - Forum Zotac gtx 670 amp edition sli important question ! - Forum Simple SLI question :) - Forum SLI Bridge Question - Forum Dual SLI Question - Forum Can't find your answer ? Ask ! Get the answer purple stank a c 213 U Graphics card a b Î Nvidia January 20, 2011 10:21:57 PM ^true If one card has higher values but is the same name/model it will be underclocked to meet the lower tiwer model. purple stank a c 213 U Graphics card a b Î Nvidia January 20, 2011 10:22:58 PM Are they both PCI-Express x16? Or is one PCI and the other is PCI-E? accolite January 20, 2011 10:26:50 PM I just noticed that! They both have to be PCI-E not PCI! borisof007 a b U Graphics card January 20, 2011 11:06:39 PM Based on his original post, I assumed that one was PCI, and the other was PCI-Express (Note, not PCI-Express 1.0 vs 2.0, but literally PCI vs PCI-E). purple stank a c 213 U Graphics card a b Î Nvidia January 21, 2011 12:20:59 AM ^yes thats what i thought too.PCI-Express 1.0/2.0/2.1 won't matter.But if 1 card is PCI and the other is PCI-E then that will not work. You have to clairfy with us plz. amitchelltech January 21, 2011 1:09:10 PM Thanks for all the replies but I was pretty specific in the regards of the PCI types. Im sorry you got confused. Thanks again, boris told me what I needed to know. Can't find your answer ? Ask ! Publish Related resources: ForumAsus 680 DirectCu II TOP SLI Question ForumQuestion about GTX 680 SLI ForumSLI Question Forum560 ti SLI question ForumSLI compatibility question ForumMSI GTX 660ti SLI PSU question ForumProbably another stupid Sli question ... ForumGtx 670 SLI question ForumEVGA 650w SuperNova NEX sli question ForumGTX 460 Super Overclock Series SLI question ForumMAXIMUS V FORMULA sli question ForumSLI and dedicated PhysX question ForumGTX590 SLI Question ForumLooking for answer to SLI and Physx question . ForumMy game is telling me I need to install Physx, but I have an AMD card? More resources Read discussions in other Graphics & Displays categories Ati GPUs Graphics Cards Gtx HD Monitors SLI Crossfire Tuner Cards Radeon Video Diamond Multimedia Matrox Nvidia Palit PowerColor Asus Games !