XE3 has bad composition
what's the point to have 3 PCI-e if yiou can use just one, middle slot only
the 1st is to close or even overlaps with CPU HS, so it can't be used
the 2nd is too close to SATA ports that any modern video cards that takes 2 slots (which isn't?) overlaps on top of SATA sockets that are vertical
and the last 3rd is PCI-E 2 that also can't take 2 slots video card as it comes on top of other connectors.
The XE4 a bit better due to SATA on the side, while 1st PCI-E has the same issue
QC for XE3 isn't good and RMA takes forever ...
that's my personal "bad" experience with it