Hang in there...I was able to get some things working:
-UEFI Boot with Clover
-Intel HD4000 graphics
-Intel GigE
-USB3.0
-Sleep (so far, so good)
What's not working yet:
-Fast boot: It takes about 20 seconds to boot up. Not bad, but not the 5 seconds others are reporting.
-Sound: Working on it
-ASUS GTX 660 Graphics card: I need to flash it with the UEFI firmware. ASUS has a tool, but it only works with ASUS motherboards
NOTE: I believe I can still use the card once I've booted the system, however, it doesn't work during boot.
This is an upgrade from Mavericks, not a clean install.
My hardware is similar to yours:
Gigabyte Z77X-UD5H with an i7-3770K CPU and 16GB of RAM.
ASUS GTX660 (GTX660-DC20-2GD5)
128GB Kingston SSD (Boot drive)
3 TB Seagate HD
4x500GB (2TB) RAID 0 scratch disk
So, right now you're asking yourself "well, what the heck did he do to get it working?"
Good question...I'm glad you asked
I'm completely new to Clover as well, and I'm just learning as I go.
I did need to flash my motherboard with the
F16g firmware. It sees to work great.
I followed a lot of
ultrazone's guide, specifically the BIOS settings. Please note that I found a LOT of different guides, but none of them were a perfect fit.
I had a lot of problems getting things to work at first, however, I believe getting the correct settings for the Clover installer (Clover_v2k_r2999) was key:
-Install for UEFI booting only
-Drivers64UEFI->EmuVariableUefi-64
-Drivers64UEFI->OsxAptioFixDrv-64
I also have "Install RC scripts on target volume" and "Install Clover Preference Pane" selected for my boot drive.
I added the following kexts to EFI/Clover/kexts/10.10:
AppleIntelE1000e.kext (I'm not sure this was even necessary...I seem to remember that it worked without it)
FakeSMC.kext (everyone says that this is absolutely required)
For Clover Configurator, I don't remember everything that I changed, but here is what I have:
Graphics Tab:
-Inject Intel checked (this is definitely needed)
System Preferences Tab:
-Inject Kexts=Yes
-Inject System ID=checked
I'll share the entire config.plist once I get everything working.
Again, I want to reiterate...I'm completely new to Clover, and a couple of days ago, I was in the same position you are in.
Good luck.