sanmane Posted March 19, 2018 Share Posted March 19, 2018 Hi. I recently installed High Sierra on my Z170-XP SLI based system and have everything working except the GT 640 graphics are quite choppy. Things like opening notification center and launchpad lag. I have full QE/QI support or whatever. I'd assume since this is a natively supported card I don't need any web drivers. Using iMac14,2 SMBIOS. If it matters I'm using a 20in Cinema Display (the old one) on DVI and a Samsung off the HDMI output with an HDMI to DVI adapter. I've attached my EFI folder if you need it. This card was moved from my 2008 Mac Pro running El Capitan and it worked just fine on there. Thanks. EFI.zip Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted March 19, 2018 Moderators Share Posted March 19, 2018 Try adding NvidiaGraphicsFixup.kext Link to comment Share on other sites More sharing options...
sanmane Posted March 19, 2018 Author Share Posted March 19, 2018 Just installed it... didn't seem to do anything. Link to comment Share on other sites More sharing options...
Moderators Jake Lo Posted March 19, 2018 Moderators Share Posted March 19, 2018 Did you add it to /E/C/kexts/Other or to /S/L/E? If to /S/L/E or /L/E, you need Lilu.kext + LiluFriend.kext If that still not work, try installing the Cuda driver, link under System Requirements http://www.macvidcards.com/store/p36/Nvidia_GT_640_1_GB%2C_2_GB_or_4_GB.html Link to comment Share on other sites More sharing options...
sanmane Posted March 19, 2018 Author Share Posted March 19, 2018 Put both the kexts in SLE. No difference... CUDA says I need to update but it's the latest version. Very odd. Link to comment Share on other sites More sharing options...
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