To measure transaction processing, testers reconfigured IOmeter's access specifications to use 512-byte packets. A peak sustained transaction performance of 153K IOps was observed with a transaction queue size of 64.
Other I/O gear included in the base Z620 configuration includes dual gigabit Ethernet ports, four USB 3.0 ports (two front and two rear) and FireWire. Options include a 10GbE NIC. For graphics, HP offers the Z620 equipped with an Nvidia Quadro K4000, K5000, 6000, Tesla C2075 and K20c models, or AMD's FirePro W7000.