I just exchanged an Intel Q6600 Kentsfield, ASUS Striker Extreme [NVidia] 680i motherboard with 8GB of DDR2 -- for an Ivy Bridge i5-3470 with 16GB -- for use as my server. Up to this minute I never thought the Kentsfield system to be slow and crippled, but the disks were dated and running on SATA -II ports, through a 4-port Marvell Sata-III card with RAID 0,1,10 and JBOD or auto-AHCI.with the Windows native driver. The 680i / q6600 is 11-year-old technology; the IB rig is hardware was released maybe seven years ago. But with a Z68 Gen3 motherboard and Ivy versus Sandy, you get PCIE v.3.0.
As a server, it is overpowered with the i5-3470. The disk and storage capabilities are enough to totally saturate gigabit Ethernet, especially for file and folder duplication levels that assure greater consistent speed. If I only need about 2GB of remaining available RAM to avoid paging out, then I can allocate 8GB of RAM to cache the drives. While that may suffice as a RAM cache, I could add either an SATA or NVME disk cache for a pool of hard disks.
Back to the main point of it all -- I was getting ready to disassemble the WHS-2011 Striker Extreme box. Then it occurred to me that I could use it as a sort of backup server to the Win Server 2012 R2 Essentials. And it could be in hibernation for most of a week.
And more at the thought on this thread -- you can keep well-configured old hardware for specific purposes if you have a place to put them and you still can discipline your electric power household consumption.
Anyone hear of a server plug-in called "Lights Out?"