New MacPro..I'm getting crazy because of errors

Question

hey people,
i bought mid last year the new macpro, the lowspec config but with 16GBRam and the D700's instead of the d300's. running 10.9.5
i'm a freelance director and editor, and the decision why i bought the macpro, was the power, portability and the promised stability.
mostly when i do heavier grading in blackmagics davinci resolve (which is handled as a reference on the official macpro website!) i get faulty corrupt lines on the export.
see here:
http://i.imgur.com/qDtQqBc.jpg
you see the corrupt line in the picture?
but now i'm getting these lines also when exporting from premiere pro CC - ProRes 720p. just the editing - no grading, effects. etc. this just cant be possible..and its driving me crazy.
you can see here examples:
http://i.imgur.com/0WL0fOJ.png
http://i.imgur.com/2t0hpGq.png
http://i.imgur.com/CZxIQXN.png
it mostly appeared in davinci when i did heavy grading and the machine became hot. but with premiere now is ridicoulus..as you know as a director/editor i have to deliver on point..but with export results like these it is now always possible...
so i  researched the internet for that problem, and many others where facing that too. they said it is especially a problem with the d700's. and only a complete hardware swap (only the gpu's of course) had solve their problems. i went to the apple store, told the guy my problem and also the internet research that only hardware swap will help. so he ordered the ne d700's that the technician can put them in. next day the technician told me this problem cannot be the gpu's as they did their special-hyper-super-hardware tests and there was no problem with the gpu's..so i got my MacPro back without any changes etc.
he told me i should update davinci resolve..but now the problem appears in premiereCC too..
maybe some of you guys know what to do? this machine costs a **** of money, and it should guarantee to run stable...
best
greg

Answer 1

TomWheel-
Discussing the bigger issues:
So far, all we know for sure is that some users seem to have a problem with these specific packages on certain Mac Pro late 2013s (but not on Apple Final Cut Pro-X). Maybe its is just my diagnostics background, but I think this problem smacks of a Hardware problem or a design problem (possibly a graphics chip to display RAM problem) that is particularly vicious at higher temperature operation, such as after graphics-computing for hours.
I also find it very telling that the original design by AMD featured Error-correcting RAM, and that the final design for Apple did not include that. [Did AMD see problems in developing this chip that caused them to use Error-correcting RAM initially? It makes me wonder if the chip-to-RAM margins are cut too close, and that some parts of some chips are not quite fast enough for some RAMs under high-heat conditions.]
It appears from this anecdote, "we won't change your graphics cards because our diagnostic says they're fine"  that Apple has produced a better diagnostic, and essentially turned it back to the software Vendors saying "our Hardware works, now what is your problem?"
It is shameful that neither the software vendors nor Apple have SOLVED this problem, but it seems to me that the onus should now be on the software vendors to provide resources and work with Apple and press for a definitive diagnosis and solution on this problem. I think there really is a problem in some of these Macs.
Practical considerations:
I suggest you use something like SMC fan control to boost the base fan speed before setting out on a complex graphics job and see if it does any better.