1.0, 2.0 and 3.0 are the official releases.
Dirty builds are non-official releases (compiled by any old person) of different versions, for example 3.0 - 123 dirty would be a revision made as an update, which should, in theory be better than 3.0, but may have added bugs, which was compiled by a person who dolphin aren't responsible for.
The number of the revision, for example 7890, or 3.0 123 indicates the individual version, and in theory higher is better.
Other builds such as fifobusy are to fix problems which do not affect everyone, and usually are less true to the actual wii, so are not officially implemented.
Dirty builds are non-official releases (compiled by any old person) of different versions, for example 3.0 - 123 dirty would be a revision made as an update, which should, in theory be better than 3.0, but may have added bugs, which was compiled by a person who dolphin aren't responsible for.
The number of the revision, for example 7890, or 3.0 123 indicates the individual version, and in theory higher is better.
Other builds such as fifobusy are to fix problems which do not affect everyone, and usually are less true to the actual wii, so are not officially implemented.
OS: Windows 10 64 bit Professional
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56
CPU: AMD Ryzen 5900X
RAM: 16GB
GPU: Radeon Vega 56