Hey, just chiming in here with what my situation was, and what fixed it for me:
I was experiencing very very very frequent freezing (every 30 minutes to an hour) with my GA-H87M-HD3. 8 GB of ram, i5-4460 processor with native graphics.
I'm not sure which of these steps were necessary, but I made a bunch of changes to my ram and kept having freezes. Since the last step, I haven't had a freeze yet, and its been about 8 hours. So at the very least, stability is improving. Here's what I did:
• Upgraded the BIOS to F8 (F9 was available but the release notes only mentioned improved support for K processors, something I don't have)
• Upped my RAM voltage from 1.5 to 1.6 (in DRAM settings)
• Set my timing to what was recommended by the manufacturer (in this case 9 9 9 24)
• Lowered my speed from 1600 to 1333.
It wasn't 'til I lowered my speeds that my stability improved. So, maybe try that one first?
Hope this is helpful to someone, and hopefully my system stays stable.