MP 7,1 Mixing RAM brands (not sizes) in 7.1 Mac Pro

[Roopster]

Hi,
I’ve just bought a refurb Mac Pro 7.1 12 core with 96gb of RAM (6x16gb). I would like 192gb so had planned to buy an additional 6x16gb of Kingston or Crucial RAM.
However some people have been advising against mixing brands of RAM, even if I stuck to the same size and preferred x6 configuration.
Has anyone done this and tested to see if it resulted in lower speeds?
It doesn’t make sense for me to bin the Apple memory, it would make more sense for me to return the machine instead whilst I can. Thanks for your help!

 

[Roopster]

Hi,
I’ve just bought a refurb Mac Pro 7.1 12 core with 96gb of RAM (6x16gb). I would like 192gb so had planned to buy an additional 6x16gb of Kingston or Crucial RAM.
However some people have been advising against mixing brands of RAM, even if I stuck to the same size and preferred x6 configuration.
Has anyone done this and tested to see if it resulted in lower speeds?
It doesn’t make sense for me to bin the Apple memory, it would make more sense for me to return the machine instead whilst I can. Thanks for your help!

It seems the current memory is 6 x 16gb of Hynix HMA82GR7CJR4N-WM.

 

[velocityg4]

It'll probably work. But you never know for certain until you try. It doesn't really matter what computer you try this with. The results are a crap shoot and can be:
- Works and all at the top common speed
- Works but at a lower speed than rated for
- Doesn't work at all.

Although it seems to me most issues come from mixing overclocked consumer RAM. Not JEDEC compliant memory working at their spec ratings.