justin, thanks for bringing this to my attention! i'm using 5 mac pro's of different types here, and after setting up the machines some years ago, i never double checked the RAM speed with the system profiler anymore and this got me confused. as a matter of fact, 800 mhz was the memory speed in older mac pros's!
indeed, i have 10600R 1333 mhz memory installed in all my slots, but apparently, the system is reporting it in a wrong way. i did some further tests and as i said before, all seems good here. then i found a thread on apple's forums about this issue, where it results unclear if this is because the mac pro memory manager is not reporting correctly or if it is a compatibility problem with certain brands of memory. that said, i also read that technically, the mac does never 'downclock' any RAM - it would simply report that i can't be used with that model. also, i never had any issues. all my other render applications (lightwave, maxwell, vray) work at the highest and expected speed. also, if i compare my maxwell benchwell values with other similar mac pros' in the database, they are perfectly in range.
in conclusion, the FZ RZ speed should not be affected in any way by this.
however, this story got my attention and i will further investigate to know more about that!
cheers and thanks again for the comments.
Edited by 3dworks, 05 December 2014 - 08:07 PM.