Reolink 5MP vs 8MP NVR Kit: which CCTV system is the smarter buy?
If you’re choosing between these two Reolink PoE kits, you’re really deciding between better image detail and better value. Both are 8-channel NVR systems with a 2TB HDD, 4 cameras, remote access, and 24/7 recording support, so the basics are solid either way. The real difference is whether the extra £110 for the 8MP system buys you enough clarity and detection improvement to justify the cost. For UK homes, that matters most when you need to identify faces, reg plates, or activity at the edge of a driveway in poor light.

Reolink 4K NVR 8CH PoE CCTV Security Camera System, with 2TB HDD and 4X 5MP Motion Detection Outdoor PoE IP Cameras, 100ft Night Vision Remote Access, RLK8-520D4-5MP

Reolink 4K PoE CCTV Camera Systems 8CH with 2TB HDD NVR and 4 X 8MP Home Security IP Cameras with Person/Vehicle Detection for 24/7 Recording Night Vision, RLK8-800D4
Our Recommendation
Product A is the better buy for most people because it delivers the core benefits of a proper PoE NVR system at £110 less, while still giving you 2TB storage, 24/7 recording, remote access, and strong user feedback. Its 4.4/5 rating from 3,365 reviews is also reassuring, and for many homes 5MP cameras are enough for general perimeter monitoring. Choose Product B only if you specifically need the extra detail of 8MP and the smarter person/vehicle detection.
Detailed Comparison
Display
Neither kit includes a monitor, so the key “display” question is image quality on playback and live view. Product A uses 4 x 5MP cameras, while Product B steps up to 4 x 8MP cameras. That extra resolution is a genuine advantage: 8MP gives noticeably more detail for zooming into faces, clothing, and vehicle features, especially on larger properties or long driveways. Product B wins here because 4K-class capture is more useful when you need evidence, not just a general overview.
Performance
On paper, both systems are strong because they’re PoE NVR kits, which means stable wired power and data rather than relying on flaky Wi-Fi. Product B has the edge again because its person/vehicle detection is more refined than basic motion detection, reducing false alerts from rain, trees, or passing shadows. Product A still performs well for general motion alerts, but if you want cleaner notifications and better event filtering, Product B is the better performer. For 24/7 recording, both are suitable, but the 8MP system provides more usable footage when you actually review incidents.
Build quality and design
Reolink’s hardware is generally dependable, and both kits are designed for outdoor use with PoE cameras that are easier to install cleanly than wireless alternatives. In practical terms, build quality is a draw: both are from the same brand, both use a 2TB NVR, and both are aimed at long-term home security rather than flashy consumer gadgets. Camera housings should be checked for weatherproofing ratings in the full spec, but in this product class you’d expect outdoor-ready construction and decent UK weather resilience. Because the core design is similar, neither system clearly beats the other on build alone.
Battery life
This category does not really apply in the usual sense because these are mains-powered PoE CCTV systems, not battery cameras. That is actually a strength: you avoid battery charging cycles, cold-weather battery drain, and missed recordings caused by dead cells. Both systems therefore win on reliability versus battery-powered alternatives, but neither has an advantage over the other here. If you want uninterrupted recording with no battery management, both are equally good.
Price and value for money
Product A is £389.99, while Product B is £499.99, making Product A cheaper by £110. That is a meaningful saving, especially because both include an 8-channel NVR and 2TB HDD. Product A is the value winner if you want a capable wired CCTV system for general home monitoring without paying extra for higher resolution. However, Product B can still be better value if you care about evidence-quality footage, because the 8MP cameras and person/vehicle detection may save you from needing to upgrade later. In pure pounds-and-pence terms, Product A wins value; in feature-per-pound for serious security use, Product B narrows the gap.
Game library/features
For CCTV, the equivalent of “features” is detection quality, recording options, storage efficiency, and app experience. Product B wins because person/vehicle detection is a major practical upgrade over generic motion detection: it cuts nuisance alerts and makes event searching faster. Both offer remote access and 24/7 recording, but the 8MP system’s extra detail makes the app and playback more useful when reviewing clips. With a 2TB HDD in both kits, storage will fill faster on the 8MP system if you record continuously, so you may need to manage retention more actively; that is the trade-off for better image quality. If your priority is smarter alerts and better forensic detail, Product B has the stronger feature set.
Overall user experience
Product A is the easier recommendation for buyers who want a solid, affordable PoE CCTV kit that covers the basics well. It has strong review volume at 4.4/5 from 3,365 reviews, which suggests many users have had a good experience. Product B scores 4.3/5 from 1,883 reviews, so it is also well liked, but the slightly lower rating and higher price mean it needs to justify itself through performance. In real-world use, that justification comes from the 8MP cameras and person/vehicle detection, which make day-to-day monitoring more useful and incident review more effective.
Overall summary: if you want the best balance of cost, reliability, and decent image quality, Product A is the safer buy. If you want the sharper, more future-proof system for identifying people and vehicles, Product B is the better security choice. For most UK homeowners on a budget, Product A wins; for those who want the clearest evidence, Product B wins.
Buy the Reolink 4K NVR if...
Buy Product A if you want a dependable wired CCTV system for a typical semi-detached house, bungalow, or small driveway and you do not need to zoom heavily into footage. It is the better pick if budget matters and you’d rather save £110 without giving up the essentials of PoE, NVR recording, and remote access. It is also the sensible choice if your main goal is broad coverage rather than forensic-level identification.
Buy the Reolink 4K PoE if...
Buy Product B if you need clearer evidence for faces, number plates, or activity at longer distances, such as a larger front garden, long driveway, or detached property. It is the better choice if you want person/vehicle detection to reduce false alerts and make the app easier to use day to day. If you expect to rely on footage after an incident, the extra resolution is worth paying for.
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