Hi, I have a 2010 MacPro5,1, with six 16GB RAM modules in it. Recently I found one of them is broken, undetectable by the system. OWC told me that it’s better to return all the six modules and get them replaced together, to ensure they are mateched. I plan to wait until my iMacPro arrives and then return the RAM for replacement. This is because if I return them now, I will be left with only 24GB of RAM (those originally came with the MacPro) for a substantial period. And this won’t be enough. So in short, I will keep running my MacPro for a while with the five good 16GB modules. My question is, should I install all five of them, or just four (two for each CPU)? 80GB of RAM and 64GB aren’t that different for me, at least for a while. Will there be any issue if the two CPUs have different amounts of RAM modules installed for them? Thanks.