Multiple micro sd card writer how to#
And yes, it’s expensive, but now you can see not only how to read all these codes, but see how redundant they are. This is a U3, A2, V30, SDXC card with a capacity of 1TB. Here you can see that video class show up: V30. With all that in mind, here’s a cherry of a MicroSD card from Sandisk: Way beyond any consumer level memory requirements, for sure. Got all those equivalents? Great! There’s also V30 = U3 but there are faster devices too, V60 = 60MB/s and V90 = 90MB/s, what you’d need if you were shooting 8K video at 120fps. Video companies talk about V classes: V10 = U1 = Class 10 = 10MB/s. 512GB SDXC U3? This is a nice card that’ll work for most applications and devices, no question.īut high end video brings its own requirements, so – I kid you not – they have their own naming scheme for MicroSD cards too. Samsung has its own naming too, so “EVO Select” is a Samsung branding thing. This one’s pretty sweet, a U3 (meaning it’s at least 30MB/s write speed and can sustain the write bandwidth needed to support 4K video at 120fps. Often that’s the easiest way to ensure you purchase a compatible MicroSD card for your device (currently there are A1 and A2 cards, but presumably the standard offers A3 and more as the tech keeps improving). That “A1” is yet another naming scheme for these cards, denoting that it’s an A1 Application Performance Class. With a capacity of 512GB this SanDisk Ultra is an SDXC, as denoted by the XC on the card. That “I” by itself? That’s another rating, it’s a UHS-I performance code. But people refer to this as “U1” because there’s also a “U3” rating (but not a “U2”). It’s a Class 10, as redundantly noted with the 10 in the circle (lower left) and the “U” with the “1” within. They don’t make those 128TB cards yet, so I guess that’s a bit of planning ahead by the industry.īut those numbers in circles? Turns out that it worked great when the first generation of (relatively slow) cards were being produced, so you can see 2, 4, 6, 8, and 10, but once you get to 10MB/s you move up to a new nomenclature, Classes. SDHC is up to 32GB, SDXC is up to 2TB and SDUC is 2TB up to a staggering 128TB.
MicroSD, MicroSD HC (also known as SDHC), MicroSD XC (SDXC) and MicroSD UC (SDUC). There are four categories of MicroSD cards, actually. 4MB/s is slow, so this is going to be only for the most underpowered of home devices, certainly not for any modern camera. Meanwhile, the 4 in the circle refers to the measured write speed: 4MB/s. The HC stands for High Capacity, offering 4GB-32GB of capacity. The codes here are 16GB, the capacity, MicroSD, the logo that shows it’s compatible with all MicroSD devices, the “HC” and the 4 in a circle. Here’s a typical low budget MicroSD card: Writing to a memory device is always slower than reading so most don’t even rate the read speed. The two main ratings with MicroSD cards are capacity and write speed. If you have 4K 60fps video camera, however, it’s writing a lot of data each second and will absolutely require the biggest, best, and fastest. Fortunately just about all memory cards have become faster and gained capacity so in many cases most everything you can purchase will work. And so the ratings and naming is a complex mess and it’s up to us consumers to figure out what we need and what will work.
Well, MicroSD cards are not that technology.
The first few times I can understand the industry not planning ahead, but when a new technology is released, why can’t they anticipate that in a decade it’ll be 1000x faster and plan a rating system that can handle that?
Multiple micro sd card writer Pc#
Whether it’s RAM for your PC or a TF Card (aka MicroSD card) for your new camera or other device, the throughput performance ratings are guaranteed to baffle. There’s something about computer and device memory that ends up being super consumer unfriendly.
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