I have a Cisco c220 m4 (http://www.cisco.com/c/dam/en/us/products/collateral/servers-unified-computing/ucs-c-series-rack-servers/c220m4-sff-spec-sheet.pdf http:

I have a Cisco c220 m4 (http://www.cisco.com/c/dam/en/us/products/collateral/servers-unified-computing/ucs-c-series-rack-servers/c220m4-sff-spec-sheet.pdf http://www.cisco.com/c/dam/en/us/products/collateral/servers...). I was surprised at the complexity of the configuration options. For example, it has 24 memory slots, but if you fill them memory speed is 2133mhz, whereas if you only use 16 memory slots, max memory speed is 2400mhz. I've ordered a pair of Intel 750 Series 1.2TB NVMe SSD's for it, can't wait to try that out. Still waiting for the SSD drives to arrive.