Hi, I saw that the 82541 GI intel card is supported: dev/em/if_em_hw.h:#define E1000_DEV_ID_82541GI 0x1076 in 5.2.1 However, with lots of traffic, lots of interrupts are being generated and so lots of cpu power is consumed. Device polling would be a nice way around this. However, in the machine which contains these cards, SMP is enabled, cause its a hyperthreading machine. I saw that device polling is not possible with smp enabled? And irq mitigation is also not included in these cards, so the old interrupt problem is still present with the modern card then? I think that the amount of interrupts consume more cpu, than calculation of checksums. Maybe im wrong in this? Any idea why intel quitted irq mitigation. A combination of irq mitigation and checksum offloading would really save cpu cycles. Bye, Mipam.