64GB SD Memory Cards
Secure Digital, or SD for short, is a memory card format commonly used in portable devices including laptops, cameras, camcorders, and handheld video game systems. SD cards, such as those by SanDisk, are mostly designed to capture videos, pictures, and other data at a fast rate. This card holds exactly 64 GB of memory.What are the advantages of using an SD card?
SD cards use a type of electronic storage medium known as flash memory. This type of memory contains no moving parts. Data is stored electronically in an array of cells within the SD memory card. Flash memory can read and write data quickly. Some memory cards can transfer data at hundreds of megabytes per second. It is also highly durable. It can withstand shocks, falls, water, dust, high pressure, and extreme temperatures. Durability is an important factor in portable devices, which must endure a variety of different environments and conditions.What is the difference between SD, SDHC, and SDXC cards?
SDXC and SDHC are different types of SD cards that can hold quite an abundance of data. SDHC high-capacity cards can have up to 32 GB, and SDXC extended-capacity cards can support up to 2 TB of data. The 64 GB card uses the SDXC format since it slightly exceeds the largest SDHC cards. You should always check which card your device will accept because different devices may only be compatible with certain SD cards. If you are buying a 64 GB card, then you should make sure that your device is compatible with the SDXC format.How are regular SD card and microSD cards different?
MicroSD cards are smaller versions of regular SD cards that are used by certain devices. These micro devices are a distinct format that will only fit in certain card readers, so check your reader first to ensure it is compatible.What does a memory card Speed Class mean?
The Speed Class rating signifies the minimum read and write speed of the SD card. Class 2 has a minimum speed of 2 MB/s, Class 4 has a minimum speed of 4 MB/s, etc. Class 10 has a speed of at least 10 MB/s, which makes it suitable for 1080p video recording and high-definition still photographs. Beyond the standard speed class rating, there is also a UHS Speed Class rating. UHS Class 1 is equivalent to normal Class 10. But UHS Class 3 can handle minimum speeds of 30 MB/s, making it suitable for 1080p videos at 60 frames a second, or 4K videos. The 64 GB SD card typically falls somewhere within UHS Class 1 or Class 3.How much video can a 64 GB SD card store?
That depends on a number of factors, including the resolution, the frame rate, and the quality of the video. The quality is measured in bitrate, literally the amount of bits displayed per second. If you are recording a 1080p video at 30 frames per second, then the 64 GB SD card can hold around 1,440 minutes of video at a low-quality 6Mb/s bitrate. But if you increase the bitrate to 24 Mb/s, then it can store approximately 320 minutes of 1080p video. Your real-world results may vary slightly.