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2. Comparison of memory cards - Wikipedia

   en.wikipedia.org/wiki/Comparison_of_memory_cards

   Card family Standards organizations Varieties Entry date Maximum commercially available capacity Picture [1] Main features CompactFlash: SanDisk: I 1994 512 GB (CF5 128*2 50 bytes) Thinner (3.3 mm), flash only, now up to 512 GB, although standard goes up to 128 PB since CF 5.0 [2] II Thicker (5.0 mm), older flash, but usually Microdrives, up to ...

3. SD card - Wikipedia

   en.wikipedia.org/wiki/SD_card

   Unlocked and locked SD cards Sony 64 GB SF-M Tough Series UHS-II SDXC Memory Card is one of the few cards in the market without a sliding tab on the write protect notch. Most full-size SD cards have a "mechanical write protect switch" allowing the user to advise the host computer that the user wants the device to be treated as read-only.

4. SanDisk - Wikipedia

   en.wikipedia.org/wiki/SanDisk

   It is known for its flash memory products, including memory cards and readers, USB flash drives, solid-state drives, and digital audio players. The company was founded in 1988 as SunDisk Corporation and renamed in 1995 as SanDisk Corporation; [ 2 ] then renamed to SanDisk LLC in 2016 when it was acquired by Western Digital . [ 3 ]

5. CompactFlash - Wikipedia

   en.wikipedia.org/wiki/CompactFlash

   CompactFlash IDE (ATA) emulation speed is usually specified in "x" ratings, e.g. 8x, 20x, 133x. This is the same system used for CD-ROMs and indicates the maximum transfer rate in the form of a multiplier based on the original audio CD data transfer rate, which is 150 kB/s.

6. CFexpress - Wikipedia

   en.wikipedia.org/wiki/CFexpress

   The cards have a XQD form factor and use two PCIe 3.0 lanes. They come in 32 GB, 64 GB, 128 GB and 256 GB capacities. More details on Delkin's CFexpress cards were revealed in February 2018. [9] [10] The cards should be able to be read from and written to with respectively up to 1.6 GB/s and up to 1.0 GB/s benchmarked with CrystalDiskMark 5.2.1 ...

7. Memory card - Wikipedia

   en.wikipedia.org/wiki/Memory_card

   The basis for memory card technology is flash memory. [2] It was invented by Fujio Masuoka at Toshiba in 1980 [3] [4] and commercialized by Toshiba in 1987. [5] [6] The development of memory cards was driven in the 1980s by the need for an alternative to floppy disk drives that had lower power consumption, had less weight and occupied less ...