PCIE speed question GIGABYTE GA-990FXA-UD3 x16/x16/x4/x4 Tags: x8 Gigabyte Motherboards x16 Crossfire Last response: March 24, 2013 7:41 PM in Motherboards Share cia24 March 24, 2013 8:40:25 AM I would like to simply know if this motherboard runs 2 7850's at 16x in cf or if it dumbs down to x8/x8 I cannot seem to find this information. It seems its x16/x16 but I would like to make sure. I would also like to add a gtx 260 I have laying around as a physx card is this possible. I have the power for this. http://www.newegg.com/Product/Product.aspx?Item=N82E168... More about : pcie speed question gigabyte 990fxa ud3 x16 x16 geofelt a c 147 V Motherboard March 24, 2013 10:08:47 AM The specs would indicate X16/X16 plus X4 for the PhysX card. That is good. But, it is a moot point since today's top cards are hardly impacted by X8/X8 Calvin7 a c 123 V Motherboard March 24, 2013 11:08:18 AM NVIDIA PhysX System Software doesn't work with AMD HD 7850 video cards. Supported Products for PhysX are all GeForce 8-series, 9-series, 100-series, 200-series, 300-series, 400-series, 500-series, and 600-series GPUs with a minimum of 256MB dedicated graphics memory. Related resources GIGABYTE GA-990FXA-UD3 pci-e slots - Forum Questions about Gigabyte GA-990FXA-UD3 - Forum Gigabyte GA-990FXA-UD3 OC questions - Forum Question of GTX 770 SLI pcie 3.0 speed - Forum Gigabyte z87x-ud4h quick question about pci express x16 speed - Forum Can't find your answer ? Ask ! Get the answer cia24 March 24, 2013 2:19:13 PM Calvin7 said:NVIDIA PhysX System Software doesn't work with AMD HD 7850 video cards. Supported Products for PhysX are all GeForce 8-series, 9-series, 100-series, 200-series, 300-series, 400-series, 500-series, and 600-series GPUs with a minimum of 256MB dedicated graphics memory. yes i forgot to mention I have a gtx 260 laying around for the physx BerylLee a b V Motherboard March 24, 2013 7:41:16 PM 2 pciex16 running x16, 2pciex16 running x4 if you have two pciex16, you must insert them in the peicx16 running x16 Can't find your answer ? Ask ! Publish Related resources: ForumGIGABYTE GA-Z87X-OC PCI-E Lane Question ForumSolvedP6X58D PCIe Speed Question ForumSome questions about fan speed and temperatures. FX8350 + Gigabyte R9 280x ForumGigabyte GA-Z68X-UD7-B3 vs. ASRock Z68 Extreme7 Gen3 PCIe question ForumCrossfire & PCI-E speed/slot question ForumGigabyte Z68xp-ud3 speed step question ForumAnyone have Gigabyte 890FXA-UD5? (PCI-E spacing question) ForumQuestion regarding PCIe speeds ForumQuestions about crossfiring 7850's and PCIe speeds. More resources Read discussions in other Motherboards categories BIOS Boot Chipsets ASRock Asus Chaintech DFI Elitegroup FIC Foxconn Gigabyte Intel MSI-Microstar !