So I'm checking the GA-MA785G-UD3H for memory supported...

[bupkus]

...and their Qualified Vendors List (QVL) and there's hardly any Crucial presence?!
http://www.gigabyte.com.tw/FileList/MemorySupport/mb_memory_ga-ma785g-ud3h.pdf

I have:

3 Kits of 2 BL12864AL804.8FE5 (1GB)
2 Kits of 2 BL12864AA1005.16FD3 (1GB)
3 Kits of 2 BL6464AA804.8FD3 (512MB)

and they're not listed, not exactly.
What they show is:

512MB Crucial BL6464AL804 SS
1GB Crucial BL12864AA804 DS
(What's with AL vs. AA?) thinking I should just try and see what happens.