Look at this compare on Intels website
ARK | Compare Intel® Products
It depends what you need it for.
The older 5620 can run a dual-cpy setup and handle much more RAM, but if you just need a web/app server and no databasem the newer Supermicro server is fine.
It uses a lot less power and produce less heat.
The life expektancy is really long on them as well, sond dont worry about it being released in 2012
I got 18 HP BL460c with Intel 5620 and similar CPU's running, and the TCO is so low, there is no point in replacing them atm, since they run a hypervisor-platform.
I replaced the old SAN with a Nimble Storage box (all flash for thin provisioning) and a low-tier Nimble Storage for backups and content. Saved me more than getting new faster servers, that the customers dont need anyways.
