Got 2 1d.4s, a 1b and a 2b. The 2b won't boot with either an Apollo 1260 or Blizzard 1260 fitted. One of the 1d.4s runs with the accelerators in but crashes every ten minutes. The other boards (bugfixed 1d.4 and 2b) exhibit no problems.
However, it seems to be down to luck at the end of the day. In short, the 2b and 1d.4 are the only motherboards likely to have problems with fast accelerators.
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