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I'm writing this guide in order to help anyone with kind of the same configuration. Without the other guides out there and some help I wouldn't have made it. Thank's a lot guide guys! Warning: The following procedure at your own risk. Please be sure to take a backup in case of emergency. Hardware Configuration: Apple MacBook Pro 17" late 2011 16 GB with discrete AMD Radeon HD 6770M AND integrated Intel HD Graphics 3000 + Thunderbolt 1 + Mavericks 10.9.4 AKiTiO Thunder 2 PCIe Box Thermaltake London 550 W (73 € @ Conrad) Asus GeForce ROG MATRIX GTX 780 Ti Platinum (444 €) external Display via HDMI Thunderbolt cable Preperation: (thanks to entzoe for his guide here) Step 1 (Note: eGPU setup should be all disconnected) Download and Install CUDA driver http://tinyurl.com/dxzoaww Step 2 Download and install a modded NVIDIA Web driver Usually, NVIDIA's official Web driver will do a system check. Official web driver can only be installed on MacPro 2008, 2009, 2010. If you are using a iMac or Mac Mini or MacBook Pro, you can't even install. But Modified Web driver avoids the system check. Modded Web driver file name is ModdedWebDriver-334.01.02f02.pkg. File mirror: https://app.box.com/s/wa2tblhb4y5dtd3fgh1z Step 3 Modify the following KEXT files /System/Library/Extensions/NVDAStartup.kext /System/Library/Extensions/IONDRVSupport.kext /System/Library/Extensions/AppleHDA.kext/Contents/PlugIns/AppleHDAController.kext [*]look for sections beginning with CFBundleIdentifier and add just before the closing add the two following lines <key>IOPCITunnelCompatible</key> <true> There are several sections OF that CFBundleIdentifier If you don't know how to modify these files (like me), that's what I did: download and install Textwrangler go to the file and right click, open with Textwrangler in the left tab extend the Contents folder and click on info.plist in the right hand tab you can do the modifications Step 4 Every time you upgrade your OS you need to modify these KEXT files Finally, clear the cache by issuing the following command in the Terminal application “sudo kextcache -system-caches” and shutdown your OS. Step 5 - Put together your hardware (without anything connected to electricity yet) connect the eGPU to the PSU via the 8 pin / 2x 2+6 pin cable dismantle the AKitio and take out the card (actually it’s two) plug the GTY into the x16 PCIe slot of the AKiTiO card (no PCIe riser needed) connect the power adaptor of the AKiTiO into the card to power-on a PSU without a motherboard connection you can use the Paperclip Trick connect the Thunderbolt cable with your computer connect the HDMI with you external display have both, the PSU and the AKiTiO power plugged into a switchboard an turn it on turn on your MacBook Step 6 - Software configuration in System Preferences / Displays / Arrangement make sure that the menu bar is located on your external display Check Apple / About This Mac / More Info… if the GTX is being used Pictures: I'll upload some later when everything is nicely put into an enclosure. The pictures I posted before elsewhere where totaly misleading and just wrong. Did everything wrong... (eGPU and AKiTiO card where touching each other, everything was placed onto a metal board and that caused electric sparks, so don't do that!) Benchmark: Conclusion: It works! I can use my internal screen and the external screen connected via the eGPU. Concerning stability with my eGPU everything is fine except for Preview and Quicktime (so far). Whenever I try to watch a movie with these programs the screen just freezes, but I can still move the mouse and hear the sound. Also the image is somehow green and distorted but wouldn't actually play for longer than a second. When that happens I have to force shut down and restart. VLC is fine, no problems there with the same files compared to Preview and Quicktime. Help anyone?</true>

Thx for your reply... But I've a weird problem with my MSI GT680. I've buyed a used NVIDIA Geforce GTX 770M pulled from MSI Laptop from Mokkin.But I've a strange problem. The card is running at VGA Mode in Windows 7 64bit. As you can see GPUZ is showing that the firmware is 80.06.46.00.01. I expected firmware 80.06.54.00.11. When i tried to search for a driver on NVIDIA.com, it recommends pls go for driver from subvendor. So i tried to flash via usb nvflash the 80.06.54.00.11 Bios, but there is a failure " No NVIDIA display adapter found". With NVflash --list it's the same. Why doesn't nvflash find the adapter? Perhaps it is a Bios problem... my version is 3.0Z? Sreenshots and VBIOS https://www.dropbox.com/sh/5y1u1te1kwc6w9b/AABUWXZvtD9lg5Y8oxccJdh1a?dl=0 edit: I'm a little more confused now... because subvendor 1008 is EPSON (http://www.pcidatabase.com/vendors.php?sort=id) and not MSI? Is there a chance to get it work in my laptop or should i try to change the card? edit: ok i'm near to solve this... it depends on the version of nvflash... 5.117 is to old but detects the card, 5.165 doesn't work at all last edit :-))) nvflash 5.136 works.