There are currently 2 main choices for Hikvision systems with up to 8 cameras: DS-7608NI-K2/8P or DS-7608NI-I2/8P. The DS-7608NI-K2/8P is a -K series NVR and was designed to be a "middle level" product while the DS-7608NI-I2/8P is from the -I series and serves as a "top level" product. In 2015 the Hikvision DS-7608NI-E2-8P , which served as the entry level NVR, was made end of life leaving the -K series and -I series NVRs as the only choices on the market. Face Picture Library Up to 16 face picture libraries, with up to 20,000 face pictures in total (each picture ≤ 4 MB, total capacity ≤ 1 GB) I hot glue gunned the fan down, which provides for an air tight fit over the holes, but means it's tightly coupled to the case, and the case is nasty flappy unbraced aluminium which normally contributes to a bad noise. If you can afford a nice silicon fan gasket it'll reduce the noise substantially again. They always seem very pricey to me for what they are. By Device All channels, 4 MP (when enhanced SVC mode is enabled, up to 8 MP) video analysis for human and vehicle recognition to reduce false alarm cameras are rare and tend to be something like a DS-2CD63C2F-IVS Hikvision Fisheye camera. However, 12MP spread across a 360° field of view isn't actually very impressive and the image would seem of low quality.

Recording Resolution - The resolution of a camera tells us how many million pixels will be in it's images. 8MP = 8 million and 12MP = 12 million. Currently, the highest resolution available in Hikvision's most recent range is 8MP. This is really high quality and pretty much the best consumers can get on the market for a CCTV system. So there would be a lot of things that could be done to improve this from my PC silencing experience, and I would have liked to have done with more time and energy, but I was in a hurry to shut the thing up. But if you're doing something similar, you might want to consider...

Specification

Hikvision also recently released a video called " Hikvision Product Lecture -- I series NVR V4 .1. 50 Firmware Introduction" which will explain a few more of the key differences.

This device does not come with any HDD installed and has no HDD capacity. However, it can support up to two HDDs with a maximum storage capacity of 12 TB. It has a Serial ATA HDD interface. Furthermore, it has 9 Ethernet LAN (RJ-45) ports.HDMI Output 4K (3840 × 2160)/30 Hz, 2K (2560 × 1440)/60 Hz, 1920 × 1080/60 Hz, 1600 × 1200/60 Hz, 1280 × 1024/60 Hz, 1280 × 720/60 Hz In the next couple of weeks I'll also be looking at 16 and 32 channel Hikvision NVRs for bigger systems. User manual (Customers often complain about how unclear this manual is so we wrote our own "Getting started with your Hikvision system" tutorial which we think is much better ) The Hikvision DS-7608NI-K2/8P is built with sturdy and durable materials, ensuring its reliability over a long period of time. Its design allows for optimal mounting in different vehicle models, providing quality sound output. Decoding Capability 2-ch@32 MP (30 fps)+2-ch@8MP（30fps）/10-ch@8 MP (30 fps)/20-ch@4 MP (30 fps)/40-ch@1080p (30 fps)