The readers were placed in the Lexar Professional Workflow HR2 hub and uplinked through its USB 3.0 port with the help of a USB 3.0 Type-A female to Type-C male cable. CF cards utilize the Lexar Professional Workflow CFR1 CompactFlash UDMA 7 USB 3.0 Reader. A microSD to SDXC UHS-II adapter is used for the latter. SD and microSD cards utilize the Lexar Professional Workflow SR2 SDHC / SDXC UHS-II USB 3.0 Reader. The USB 3.1 Type-C port enabled by the Intel Alpine Ridge controller (It connects to the Z170 PCH via a PCIe 3.0 x4 link) is used for benchmarking purposes on the testbed side. Testbed Setup and Testing MethodologyĮvaluation of memory cards is done on Windows with the testbed outlined in the table below. Prior to that, we take a look at the testbed setup and evaluation methodology. The next four sections will detail the obtained performance numbers. Readers will get an idea of the out-of-box performance as well as how the performance degrades after extensive usage.īuy SanDisk Extreme PRO microSDXC UHS II 128GB on SanDisk Extreme PRO microSDXC UHS-II 128GBĮach of these five cards were subject to our comprehensive memory card evaluation routine.SanDisk sent 5 different cards for our evaluation: SanDisk targets all formats other than XQD. Lexar (which used to be a division of Micron) has memory cards for all formats currently in use - SD, microSD, CompactFlash (CF), CFast, and XQD. Their portable external SSDs and high-performance thumb drives take care of the post-ingestion portable storage requirements, while their range of memory cards service the actual in-camera storage market. They have a comprehensive flash product portfolio targeting the content creators market. SanDisk / Western Digital is one of the very few flash product vendors who manufacture their own flash memory. SanDisk sent us a SDXC, two microSDXC, a CFast 2.0, and a CompactFlash card from their portfolio for review. We recently started in-depth evaluation of the performance of various memory cards. High-end recording systems with fast storage requirements use CFast and/or XQD cards. Many computing systems (PCs as well as smartphones) also support SD cards for augmenting local storage capabilities. CompactFlash (CF) became popular in the late 90s, but, has now been overtaken by Secure Digital (SD) cards. There are different varieties of memory cards catering to various performance levels. Digital cameras and camcorders employ memory cards (flash-based removable media) for storage of captured content.
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