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DDR4 is the right choice in this day and age, if they had gone with DDR5 it would have doubled the cost for the whole rack.

Looking forward to the discounted DDR3 Opteron-based option.

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DDR4 is not being manufactured at scale any more so it’s becoming very expensive too.

> if they had gone with DDR5 it would have doubled

They charge a premium for their hardware due to the software. They have plenty of room for RAM price fluctuations. It would nowhere near double the price.

> Looking forward to the discounted DDR3 Opteron-based option.

I know you’re joking, but anything DDR3 based is really slow and power inefficient relative to current gen hardware.

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Not really super relevant given that the question was “Do they sell hardware, software or something else? it is very confusing.”
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They are already selling the next generation, its just not public. I assume they are focusing on existing costumer and larger orders. While for now in public they still sell the older version. That is at least my guess.
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