ultrazone's Slave Audio Build: Gigabyte GA-Z68X-UD5-B3 - Core i7-2600k - 16GB RAM - Gigabyte GT 640 Components Intel Core i7-2600K Quad-Core Processor 3.4 Ghz 8 MB Cache LGA 1155 http://www.amazon.com/gp/product/B004FA8NOQ/ Gigabyte GA-Z68X-UD5-B3 Motherboard http://www.amazon.com/gp/product/B0050HZ6AC/ Gigabyte GeForce GT 640 GV N640OC-2GI - GF GT 640 http://www.amazon.com/gp/product/B008J1O968/ 4 x Kingston ValueRAM 4GB 1333MHz DDR3 Non-ECC CL9 DIMM Desktop Memory http://www.amazon.com/gp/product/B002K23V1Q/ Kingston SSDNow V+200 60GB SATA III 6Gb/s 2.5" Solid State Drive http://www.amazon.com/gp/product/B006YLVEVI/ Seagate ST2000DM001 Barracuda 7200RPM 2 TB SATA 6 GB/s NCQ 64 MB Cache 3.5-Inch Internal Bare Drive http://www.amazon.com/gp/product/B005T3GRN2/ LG Electronics GH22NS70B 22X SATA Super Multi DVD+/-RW Internal Drive (Black) http://www.amazon.com/gp/product/B004U65QQ8/ Sonnet Presto GE1000LA-E Gigabit Ethernet Pro PCIe Card http://www.amazon.com/gp/product/B0017K6BR8/ Thermaltake Black V4 Mid Tower Case with 450W Power Supply http://www.amazon.com/gp/product/B004PG2X4G/ Apple Mac OS X 10.8.2 Mountain Lion Apple OS X Mountain Lion @ Mac App Store Already Owned Viewsonic VX2253MH-LED 22-Inch Widescreen LED Monitor (Black) http://www.amazon.com/gp/product/B004KCPH8Y/ Logitech Keyboard K120 http://www.amazon.com/gp/product/B003ELVLKU/ Logitech Trackman Marble Mouse http://www.amazon.com/gp/product/B001F42MKG/ M-Audio ProFire 610 High-Definition 6-in/10-out FireWire Audio Interface with Octane Preamp Technology http://www.amazon.com/gp/product/B005L0XMZO/ Comments: This was my first hackintosh system. Firstly I used it as my main computer for professional work with Pro Tools 10 and Vienna Ensemble Pro, but I bought a new one (http://www.tonymacx86.com/user-builds/77030-success-ultrazones-build-gigabyte-ga-z77x-ud5h-core-i7-3770k-32gb-ram-gigabyte-gtx-650-gigabyte-gt-640-a.html), so this one now acts as a slave with Vienna Ensemble Pro. Regarding my choice in main system components (CPU, motherboard and graphic card), I followed the buyer's guide 2011 (Buyer's Guide 2011). I added the Sonnet Presto Gigabit PCIe card since my work with Vienna Ensemble Pro requires a dedicated network connection that's fast and reliable. This card works OOB without any installation or kexts' editing. BIOS settings: I just loaded the optimized defaults for this mobo (using BIOS version F10) and made sure AHCI and HPET 64bit were enabled. Nothing special here. Installation: I've followed the official guide for Mountain Lion installation available at http://www.tonymacx86.com/61-unibeast-1-5-install-os-x-mountain-lion-any-supported-intel-based-pc.html. I also took into account these tips from tonymacx86 (Thanks !). Here is the whole process: - First I followed the guide to create a 10.8 USB stick using UniBeast (UniBeast: Install OS X Mountain Lion on Any Supported Intel-based PC). UniBeast version was 1.5.3 for Mountain Lion (http://www.tonymacx86.com/downloads). - Then I applied the BIOS settings described above. - Booted the stick (F12 key while booting BIOS) and used as boot arguments "GraphicsEnabler=No", since that is the recommendation for 6XX graphic cards according to tonymacx86 on his installation tips for Mountain Lion. The installation went smoothly. - Booted the stick again after installation and choose my new installation, again with "GraphicsEnabler=No". The initial configuration went fine and then I used MultiBeast 5.1.1 for Mountain Lion (http://www.tonymacx86.com/downloads). I put my mobo's DSDT.aml in the desktop (download from http://www.tonymacx86.com/11-dsdt-database.html and finally MultiBeast. These were my settings: After rebooting, the system was ready to be used and fully functional. And now the benchmark screens: CPU tests: GeekBench 64bit: iBench: NovaBench: xBench: Graphic tests: CineBench: LuxMark: Unigine: Disk performance tests: BlackMagic Disc Test - SSD drive: This machine performs pretty well. When I use it along the master computer it is able to render more than 36 stereo tracks in realtime without a hiccup (love this Vienna Ensemble Pro thing). None of the cores in the activity monitor has reached 50% yet, so I am sure it will be able to process more tracks when needed. Regarding graphics performance, it is what is expected from a GT640: the desktop and everything related works very well, and since I don't do any gaming or video work, I'm happy with it. What's more, the GT640 is a very silent VGA card and doesn't require the PCI-E connector from the power supply. Regarding boot times, 20 to 30 seconds from Chimera screen to desktop. From power button to desktop it takes more time since this BIOS is somewhat "slow" when booting. Sleep works perfect, USB drives work after wake and I didn't feel a performance dropout after waking the machine. So in conclusion, everything works ! I am waiting for your suggestions. questions, comments, possible improvements and all that stuff. I have to say thank you to all this wonderful community for your help and support. Without you it wouldn't have been possible. And special thanks to Tonymacx86 and MacMan... these guys rock ! Cheers from Spain !