How do I determine which SMBIOS to use?

I have an Ivy Bridge i3-3225, Gigabyte Q77M-D2H, 16gb of DDR3 Corsair Vengeance LP ram, and an R9 280. I currently have if configure as an iMac 13,2 and have iMessage all working. However I can’t seem to get sound working at all with this SMBIOS. Previously I had been using the Mac Pro SMBIOS but had to change it since the Mac Pro I was using was not compatible with MacOS Sierra. Is there some magical formula for what SMBIOS to pick? If I want to change my SMBIOS what is the best route to avoid any future iMessage issues?

submitted by /u/AppleTechy
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