After one replacement board and many issues (12GB, 10GB usable etc), I've now got my MOBO working reasonably well apart from an unexplained and very infrequent (fortunately) corruption of data on OCZ RAID0 disks. One generic problem that I have with the GA-X58A-UD3R is what appears to be a very long lag in posting of updated drivers etc for the chipsets and controllers.
eg. it was 6 months after Intel released its Intel SATA RAID driver 9.6.0.1014 before it was posted on the GB site. The same applies to the Marvell SATA3 controller which I had to download from the Asus web site in order to get anything that even appeared to be recent.
I understand that GB has to test new drivers as they become available but other MOBO manufacturers appear to be much more responsive in posting new drivers.
The GA-X58A-UD3R (Rev2) is still a recent MOBO so I would have expected more current downloads.
Through these forums (thank you all) I have identified third party sites which have more up to date drivers (and even BIOS) available. Are these sites generally reputable and at least semi-official or are they to be treated suspiciously? As an enthusiast, I like to take advantage of performance benefits etc from new releases so the current GB lag in posting new drivers etc is very frustrating. Do other GB users regularly use the downloads from 3P sites?