Have you heard anything about the US versions of the Hikvision NVRs using a different chipset as opposed to the ones made in China? I was talking to the Hikvision REP here and he said that's one of the reason's why it's cheaper but I've never purchased 2 of the same model (one from China and one from the US) to see if it's true. The rep was saying the US ones use TI (Texas Instruments). I don't remember what he said about the China ones but it wasn't TI for sure. I can probably crack open my DS-7608NI-I2/8P and find out.