My experience with Z580 i5-3210M.
Successfully installed 10.8.4.
DSDT
turkawa has posted 3 DSDT's for the i5 Z580. The 1st on page 4, posting #34. The same DSDT is posted on page 5, posting #44. But on page 25, posting #247 there is a different DSDT and this is the one that worked best for me. I have not yet tried dealing with brightness controls. The screen is bright enough as is.
Edit: tried
untergeek's DSDT for GenericBrightness along with the GenericBrightness.kext and it worked as he described - see
page 32 posting #311. And the DSDT still provided audio. I did not check out whether I had the problem with Fn keys in the login screen, which I so rarely use.
Audio
birkley recommends on page 1, posting #1, to use a particular IOAudioFamily.kext. The link to that kext is broken. It goes to a thread on the legacy tonymacx86 site and files cannot be downloaded from there (at least I see no way to do so). However,
turkawa posted the IOAudioFamily.kext on page 25, posting #247 along with the same AppleHDA.kext that is recommended in the 1st posting.
These two files did not give me working audio until I used the DSDT from page 25, posting #247.
Video
I did not delete the ATI, Nvidia or GeForce kexts and I booted with no problems.
Battery
I tried the latest AppleSmartBatteryManager.kext (v1.32) from
RehabMan's repository, but it didn't seem to work by itself. The battery icon in the menu bar showed an X. Added the provided AppleACPIPlatform.kext and AppleACPIBatteryManager.kext and the icon started working. I don't know whether having both battery managers installed is good or bad, but I'm not messing with success.
Wireless
I purchased the AR5B95 card but have not yet installed it, so I do not yet know what problems lie there.
Edit: Installed the wireless card and it worked fine. Rather than install a patched IO80211Family.kext, I used a device injector kext. This saves having to worry about one kext during updates. The injector kext is attached.
Camera
Works fine, bright and clear.
Card Reader
Doesn't work, of course.