IBM System x3650 M2 review

Removing the lid reveals a well designed interior offering plenty of room to grow. At the rear you have a pair of riser cards each sporting two x8 PCI-e slots and there’s enough room for you to add a mixture of full-height, half-length and low profile cards.

IBM’s new cooling system impresses as it incorporates an altimeter that works alongside the IMM to control fan speeds. All internal cooling is handled by a bank of three dual-rotor hot-swap modules and suffice to say that at sea-level we found the server to be very quiet during normal operations.

IBM’s optional Active Energy Manager plug-in provides plenty of information about power consumption.

The server came with a single 675W supply but you can slip in another alongside for power redundancy. For general power consumption our in-line power meter recording 14W in standby and 140W with Windows Server 2008 idling along. With SiSoft Sandra pummelling all sixteen logical cores we saw this peak at 218W. The same tests run on a very similarly specified PowerEdge R710 returned power readings of 16W, 150W and 270W.

The server comes with two embedded Gigabit ports and these can be increased to four with an optional dual-port Gigabit daughtercard, which slots into a proprietary slot on the motherboard. IBM also offers riser cards with x16 PCI-e or PCI-X slots so you have plenty of choices for further expansion.

IBM’s latest 2U rack server delivers a fine combination of storage capacity, performance and expansion potential. Although memory and storage capacities are quite up with HP’s ProLiant DL380 G6, the x3650 M2 is still a good choice as a virtualisation platform and it looks good value as well.