I would disagree. With modern processors and memory you can cram a LOT into one cabinet. We run with Dell C8000's and R620/R720's and they are 'wow' level fast.

I would disagree. With modern processors and memory you can cram a LOT into one cabinet. We run with Dell C8000's and R620/R720's and they are 'wow' level fast. Given that you can cram dual processors and 256GB of ram * 8 into 4U with the new C8000's you basically can have around 2TB of memory and 16 physical cores in 4U... that's a lot of hardware. Addendum: I should say though that be aware the C8000 servers are hungry beasts for power. I believe they are nearly 9A at full draw.