....there is the additional possibility to buy an extension board for the RayDat with BNC-wordclock IN/OUT and sync your console to the RME - might be the better solution.....
....buy an external clockgenerator like LUCID or BIGBEN to sync both, which is supposed to be the best solution.
Not "might be". It
is the best solution as far as syncing the two together is concerned.
I used to have an RME 9652 card on a PPC Mac. When I first hooked it up to the D8B with only the lightpipe connections...it was random click 'n pop city. Got a Lucid GenX192 and connected WC out to both the D8B and the RME. Never had another WC related click or pop ever. Worked a charm. Rock steady sync...never failed.
The only caveat to this is that the RayDAT eats two Mac PCIe slots. If you get RME's Word Clock Module....it eats a third slot up. If you need that extra slot space for something else (like a UAD card)....you're outta luck. When I switched over to Intel Macs, I wanted to get the RayDAT to replace the 9652 (no PCI on Intel Macs...only PCIe)...but the WC add-on was a showstopper for me...so I wound up settling for a MOTU 2408 system....which actually didn't turn out to be all that bad, audio-wise, compared to the RME. And I still use the same GenX to D8B and MOTU WC hookup. Flawless sync.
...just sayin'...