Nothing out of the ordinary- (actually noting at all). All I did was use the Unibeast- then before I plugged in the 7970 I updated Chimera to the newest (also with Haswell support). I then set internal graphics (IGFX) to boot first- and to active.

Then I plugged into the Mini Display port on the 7970, (currently HDMI is not working - only 2 display ports) but that is only a DSDT thing-(ie: writing a number 3or 4 somewhere) - which would be fixable- but now I have no time to play with that... will in future though- but I don't need HDMI anyway right now.

Just to be clear no playing around with framebuffers or the like, (and I know they are working- 0 issues with FCPX - only one crash in 48hours constant usage, which is better than most people out there). Unigine Valley got an ok score I forget- something like 1500 for HD settings, (windows 7970 gets 2000 I think- it hurts bad that score!). And its not an overclocked 7970 either.

Also do consider a MSI 7970 (Im not getting paid by them at all so don't worry) its just that they are probably the only company with Overvoltage support and also in the future they will support GOP vBIOS. You can actually update it now to GOP but that is another story- and Chimera doesn't need it- that would be for EFI boot.

Hey @inqb8tr,

Yes that is the sound. Mine has gone away now, (almost miss it - thought that it was SUPER powerful with extra noise!).

This is not a ground loop issue, this is a GPU issue - as they are getting more and more power hungry.

TC Electronic Desktop Konnekt 6 can not be isolated- (there is no digital output) so if it comes back again... maybe get an additional ADAT interface? (PCI & Firewire available).

This is what I have done, (was connected to my rig).

Works really well - (don't tell anyone but Im using my Ultragain Pro 8- digitals for ADAT -> Speakers).

The Pro 8's actually sound great, and if I was into spending any more cash I would get it modded by Black Lion as well. (quieter than an Apogee supposedly).

This is not a ground loop issue, this is a GPU issue - as they are getting more and more power hungry.

Did you try lifting off the ground?

@alcomposer Good to know the 7970 Just Works under Chimera without any added dickery. My 5870, being an Apple-approved Mac Pro option, doesn't even need GraphicsEnabler in boot plist to work perfectly. Never understood the backflips Hackintosh fora go through to get the latest Nvidia cards to work when there are serious ATIs that work OOB no fuss no muss.

FYI the audio noise some of you guys are hearing from on board audio or PCI audio cards is ground related, but not a ground loop per se. It's a noisy ground being shared with the audio path. Since an audio circuit is only modulating the DC power supply at the end of the day, a noisy supply = noisy audio. Decoupling the audio circuit by using outboard D/A linked via optical cable is your best bet for a motherboard with noisy DC rails. Sometimes even just a cheap but decent USB audio adapter like the $11 Syba can get rid of this noise completely.

@Shaveblog, thats what fixed it for me. But I don't have the machine now to play with :-(

I can say that the noise stopped inside the case after it was left on overnight. So maybe it was burning in? I won't know until I test out that build again, (maybe in 2 months) :( :( :( I do know that the PSU I was using is most probably the best money can buy currently- Im not into Hackintoshes to save cash- Im into them to do my work- and I love OS X. (And OS X seriously loves them)

But you are right- my rig was powered from a recording studio I use all the time, no ground loops normally. But I am almost happy to go ADAT from now on, the traveler is a NOISY POS. Apart from its great price (wait- I paid 1k for mine) and its great features (its is nice to look at)...

Eh who am I kidding, will probably go with some new gen thing soon, but ADAT is all I need right now.

@dtr, I haven't played with multi monitor yet - but both Mini-Displayport ports worked OOTB.

Im not kidding- that 7970 is a beast of burden - love it.

Now I have to plan yet another build during the interim... thinking of going z77x-up5th. (sorry - taking a risk with a 7970 was all I could swallow- Im sticking with what works, and quite frankly Haswell does nothing for me.

Are you using fx that is not cuda accelerated (in case of premiere)?

@alcomposer Do you mean the OpenGL Viewer app in the Mac App Store, or are you referring to a different app? I don't have the same issues with slow rendering but am curious about the benchmark tools you're using to verify proper GPU behavior. I assume my HD 5870 Just Works because it's officially supported in Mac Pros and everything does get lots better when it's pushing pixels vs. HD4000, but it's always good to confirm these things if possible with test utilities.

What slows my PP rendering drastically is using non-cuda fx that is also not CPU multi-core aware.

@vicharris in case you don't know this: open Activity Monitior Window>Floating CPU window and select one of the options. This will show you all of your system's processors. My hack is an i7 quad core (multi threaded) so 8 "processors" show up.

When you render in FCP7 besides being 32 bit it can also only utilize 1 processor. So under "process name" you should see no more than 100% being used (which SUX!). The rest of the core are idle. This is what makes Premiere so attractive, on top of cuda acceleration and 64-bit, is it can use all 8 processors or 800%.

In any event, what always worked for me was to use FCP rescue (discontinued) and save a set of the FCP prefs (I think there are 4) when the system was set up and running well. If it bogged down (well known prefs would get corrupted easily, you could quit FCP and use FCP rescue (or do it manually) and trash the current prefs and replace with your archived "fresh" prefs. Restart FCP and it would run well again.

Also what OS are you running? 10.8.4? The last OS supporting FCP7 was 10.6.8. Anything beyond that and you are in unsupported waters.

I am running 10.8.4 and have FCP7 installed, just haven't had a reason to use it yet. LMK how this comes out...? Thanks

Hey @vicharris the software I am talking about (now that I am on my machine with Dev tools installed) is Quartz Debug.

Currently Apple have changed how the distribute the Developer tools. Once upon a time (before Xcode went App Store) it was all bundled together. Now you will have to get it from the developer tools download directly from Apple - its in the downloadable bundle named Graphics Developer Tools.

You don't need to pay $100 a year to be able to download this. Simply register as a developer at: https://developer.apple.com/devcenter/mac/index.action

Don't ask me how to get to the download page. Its one of the links - but it always takes me about 4 mins to find the correct path to get to it. Just click away at the links until you get to a download place that has .dmg files. Search for Graphics.

YMMV

@ vicharris... obviously the dangers of using FCP on OSX after 10.6.8 are documented, even on real Macs. Recently I was forced to use FCP on my 10.8.4 Hackintosh and I ran into some stuttering problems immediately.

Somewhere on a Mac Editing Forum someone suggested something odd, but it worked: change/delete the Waveform cache. In my case I switched the settings/cache to a different disk and there was an dramatic (!) improvement, albeit still with some hiccups. But in the long rung: FCP is done and gone... R.I.P.

+1 on 7toX. I also recommend Xto7. Those two apps should be in everyone's arsenal if you ever want a flawless transition between apps of all kinds.