Hi, I recently scored a 12 core Mac Pro 5,1 to replace my current 6 core model (I love company auctions, especially when the IT department can't be bothered to test equipment, and thus sell perfectly good computers as scrap 
).
My old 6 core 5,1 has four 8GB ECC ram modules, completely filling the four slots available in the six core memory bank. I'm wondering... would I see a big performance hit if I just split the four modules into groups of two, and put a pair of 8GB modules in the memory bank for each processor of the 12 core model? I seem to recall that three modules is ideal, four a little less so, but I can't recall anyone talking about only two memory modules in a bank.
I also have some 4GB and 2GB memory modules. I could, for instance, put three or four of one size in one memory bank, and three or four of another size in another memory bank; is this OK to do?
Finally, what is the advisability of mixing different memory module sizes in a given bank? Could I put two 8GB modules and two 4GB modules in each processor's memory bank, for a total of 48GB? Are there special RAM parameters that have to match for this to be OK?
Thanks for your advice.
).My old 6 core 5,1 has four 8GB ECC ram modules, completely filling the four slots available in the six core memory bank. I'm wondering... would I see a big performance hit if I just split the four modules into groups of two, and put a pair of 8GB modules in the memory bank for each processor of the 12 core model? I seem to recall that three modules is ideal, four a little less so, but I can't recall anyone talking about only two memory modules in a bank.
I also have some 4GB and 2GB memory modules. I could, for instance, put three or four of one size in one memory bank, and three or four of another size in another memory bank; is this OK to do?
Finally, what is the advisability of mixing different memory module sizes in a given bank? Could I put two 8GB modules and two 4GB modules in each processor's memory bank, for a total of 48GB? Are there special RAM parameters that have to match for this to be OK?
Thanks for your advice.
