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Home Buying Guide

Best microSD (memory) cards for security cameras [2023 Guide]

Marco Albertini by Marco Albertini
in Buying Guide

Most IP security cameras feature a memory card slot. The built-in microSD card can achieve local video recording, hence avoiding data loss by network disruption.

Now here comes another question, how to choose an appropriate SDHC/MicroSD card? What’s the best SD card for IP cameras? Same as the hard drive rated for surveillance, there are tricks to choosing the right microSD card for surveillance systems.

Which SD card works better in a security camera? Which memory card is best for a CCTV camera? As we know, an HD IP camera will read and write data on an SD card. The read and write data speed is the main factor to consider in the SDHC/MicroSD card.

When we look at the specification of an IP camera we can see that many of them offer a slot for SD, SDHC, and SDXC memory card, but what does this mean exactly?

These name rules are related to the maximum storage capacity of the SD cards. The table below shows the details of each type:

Type Abbreviation Capacity
Secure Digital SD Up to 2GB
Secure Digital High Capacity SDHC 4GB to 32GB
Secure Digital High Extended Capacity SDXC 32GB+ to 2TB

Quick microSD Suggestions

If you’re in a rush, take a look at the selection below. All these are reliable and well-tested microSD cards that work perfectly with your CCTV IP cameras. Scroll down to get more suggestions and details.

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On Amazon

Things to know before purchasing a microSD card

First, check your camera’s specifications. Some cameras have a limit on what size of memory cards they support. For example, old IP cameras only lets you add microSD cards up to 32GB in size. To support a higher microSD card capacity, you may need to update the firmware on the camera.

Second, determine how much storage space you need based on how you plan to use your surveillance security camera.

If you set up your camera to record continuously, you should use a high-capacity memory card. But if you’ll only use the memory card as a backup storage device, you can settle for one with a lower capacity.

Finally, factor in your camera’s resolution. High-resolution videos take up more storage space, so if your camera’s resolution is 1080p or 4K, use a microSD card with a larger capacity.

Another factor to consider is the card speed. The speed rating of memory cards is based on their read/write speed. However, on security camera applications, only the write speed matters.

The write speed is the rate at which a memory card writes data (video) to its memory. If you use a slow microSD card, it might cause recorded videos to skip frames or become laggy.

Unfortunately, unlike with the capacity, most security cameras don’t explicitly give a recommended write speed. Most of them tell you to choose a memory card with a speed rating of SDHC Class 10, which means it can sustain a write speed of at least 10MBPS.

Making the choice even more complex, the SDHC speed rating is now being replaced by SDXC I and SDXC II. So, how do you choose a memory card with the right write speed?

We suggest that you base your decision on your camera’s resolution. Cameras with a higher resolution require microSD cards with higher write speeds. For 4K cameras, look for microSD cards that can sustain a write speed of at least 30MB/second.

Such cards are usually marked as SDXC I with the number “3” inside a U-bracket or SDXC II V30. For 1080p and 720p cameras, use a memory card that can sustain at least 10MB/second write speed. They are marked as SDHC Class 10, SDXC I with the number “1” inside a U-bracket, or SDXC II V10.

The best microSD cards for security cameras

1. Samsung PRO Endurance

Samsung PRO Endurance microSD cards were recently released. The best thing about them is that they are designed specifically for home security cameras.

Samsung PRO Endurance cards can maintain a write speed of up to 30MB/second, which is more than enough for 1080p and 720p recordings and just right for 4K recordings. As the name implies, they are also durable.

According to Samsung, they are waterproof (IP67), high-temperature resistant (up to 185℉), magnet-proof, and even X-ray proof. Finally, they are capable of recording for up to 43,800 hours straight (that’s 5 years), making them the perfect solution for video surveillance.

They also include a 5-year warranty. Overall, Samsung PRO Endurance microSD cards provide the perfect balance between performance, durability, and price, making them our top pick. Available in: 32GB, 64GB, 128GB, other.

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2. Sandisk High Endurance

Sandisk has its own version of a durable microSD card in the form of Sandisk High Endurance. It’s not as fast and durable as Samsung PRO Endurance, but it’s a low-cost option for lower-end cameras.

They sell 32GB, 64GB, 128GB, and 256GB models and are designed for cameras with a resolution of 1080p and higher. However, they are high-temperature-resistant (up to 185℉), shockproof, X-ray-proof, and waterproof. It’s highly recommended for outdoor security cameras.

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3. Sandisk Extreme Plus

If speed is your priority, Sandisk Extreme Plus is another good option. Performance-wise, it’s similar to Samsung PRO Endurance with a write speed of up to 520MB/second. However, while it’s fast in terms of write speed, it’s not designed for prolonged recording.

Also, Sandisk Extreme Plus is only durable to an extent. It’s waterproof, temperature resistant, and X-ray proof. Plus, it’s pricier than Samsung Pro Endurance. Available in: 32GB, 64GB, 128GB, 256GB.

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4. Samsung MicroSDXC EVO

Samsung Evo is Samsung’s speed-focused line. Ideal for Recording 4K UHD Video and perfect for writing large volumes of data at high speeds.

Built to last, this shockproof memory card is also waterproof, temperature proof, X-Ray proof, and magnetic proof It’s also waterproof, high-temperature resistant, X-ray proof, and magnet-proof.

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On Amazon

5. Kingston Endurance

Our final pick is the Kingston Endurance microSD card, and we recommend it for very specific use: outdoor security cameras in frigid environments.

Kingston Endurance isn’t as fast as the other options, but it can withstand very low temperatures. Durable in harsh conditions — built and tested to be shockproof, waterproof, temperature proof, and protected from x-rays

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The microSD cards for CCTV security cameras must be reliable, fast, and fit your budget. The brand name is not that much important, however, it’s better to go with well-known manufacturers who stand behind their names.

Marco Albertini

Marco Albertini

Italian-born Marco Albertini, with a background in Computer Science, found his passion in security camera systems, alarms, and cloud services. Based in New York since 2010, he's a sought-after expert, assisting numerous businesses and homeowners in securing their properties with advanced solutions.

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