The top-end 3.1ghz 8-core Xeons are $1935 each on Newegg:
#HACKINTOSH MAVERICKS USB INSTALL STOPS MAC#
It'd be interesting to see how the cost compares to the newly-announced Mac Pro. Lightninhopkins over on the Tonymac forums has been running a 16-core (32-thread) Hackintosh with 128gb RAM (I believe 96gb usable) for over a year now: Would fun to do a casemod with a broken Dyson vacuum or something This laptop is awesome, best I've ever owned, including a few genuine MacBooks) use it every single day and it's rock solid. I'm responding on my 4530s running 10.8.3 off an internal SSD in place of my optical drive. Rehabman is the king of patches and fixes for the ProBooks, so I'd read through any relevant thread of this on various fixes and patches for any problems you run into.
(Usually a $15 or so ebay item and about 5 minutes of work to install). If your wireless isn't working, you may have the same issue I (and most people) had with the 4530s- the internal wifi/BT chip isn't always compatible and needs to be replaced with the correct one. I see that the newer 4540s models have some additional patches required over the 4530s which has so much research done for it, it's now pretty much point and click. It's why I stress in the video I made that it's not a tutorial, there's a bunch of little detail things you may have to do to get things fully working. I recommend read read read this thread and others on Tonymac: So i'm HOPING to have ML up and running shortly. So since it works on here just fine, and i have a SL time machine backup, i'm going to now try it on my main SL install and see what happens. i have wireless working with a 3rd party adapter. So i just was in and ML is running just fine, other than graphics, ethernet, and sound drivers. so all along, even though it said to set it to ahci in the sata settings, that is what was causing me to NOT see it. i then went back into the mountain lion installer, and what would you know, the freaking hdd is now being recognized in there too. turned off the ahci sata settings and put it on ata instead and tried booting up. then it got to the point where it said "still waiting for root device" and kept saying that, so it never found my hard drive. So i then loaded up the unibeast boot disc and tried loading it up that way. it would reset the computer after like 15 seconds of loading kexts. When booting with chimera, it would not boot up. so i went into 10.6 and installed chimera on it, and then it saw it to boot up. it didn't see the drive as a bootable disc. i tried to boot up in usb and i couldn't.