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Often, fast sequential speeds come at the expense of random read/write speeds, but the A2-class 1066x is an exception; it’s not as speedy as the Integral Ultima Pro Professional High-Speed card below, but it’s faster than the SanDisk Extreme Pro and Samsung Evo Plus on this count, making it a fine all-round performer. If you’re looking for a card that can run apps or cover video on your mid-range or high-end smartphone, you won’t get much better than this. Ideal para grabar aventuras al aire libre, viajes de fin de semana o eventos deportivos sin omitir ni un solo fotograma. La tarjeta SanDisk Extreme PRO microSD UHS-I, con capacidad hasta 1 TB 1, permite capturar videos 4K UHD 2 y full HD sin interrupciones, gracias a sus clasificaciones de velocidad UHS clase 3 (U3) y velocidad de video clase 30 (V30). 4
Despite being rated faster than the Lexar 1000x, the Lexar Professional 1066x actually uses the slower UHS-I interface. This turns out not to be a big deal, though, as we still measured sequential read speeds of up to 157MB/sec and write speeds of 80MB/sec on our 64GB sample, with the faster 128GB to 512GB versions capable of over 120MB/sec. Se requiere un dispositivo compatible. La compatibilidad con Full HD (1920x1080) o 4K UHD (3840x2160) puede variar según el dispositivo host, los atributos del archivo y otros factores. Consulta www.sandisk.com/HD Get faster app performance for an outstanding smartphone experience thanks to the SanDisk Extreme PRO microSD card’s A2 5 Specification. No todos los dispositivos admiten los formatos de la tarjeta de memoria microSDXC. Consulta con el fabricante de tu dispositivo para obtener más información.For 64GB-1TB ONLY: A2 performance is 4000 read IOPS, 2000 write IOPS. For 32GB: A1 performance is 1500 read IOPS, 500 write IOPS. Results may vary based on host device, app type and other factors. On the face of it, the SanDisk Extreme Pro seems overpriced. This U3, V30, UHS-I card is significantly more expensive than the Samsung and Integral competition at most capacities, and when tested on our SanDisk ImageMate Pro card reader it wasn’t any faster, at least on sequential read and write speeds, which were 96MB/sec and 85.4MB/sec respectively. SOLO para 64 GB a 1 TB: El rendimiento A2 es de 4000 IOPS de lectura y 2000 IOPS de escritura. Para 32 GB: El rendimiento A1 es de 1500 IOPS de lectura y 500 IOPS de escritura. Los resultados pueden variar según el dispositivo host, el tipo de aplicación y otros factores. These standards cover the speed of the interface between the microSD card and your device (or memory card reader), as this can also limit the maximum speed of data transfers between the two. UHS-I has a maximum speed of 104MB/sec, and you’ll usually see a Roman numeral “I” beneath the U1 logo. UHS-II takes that up to 156MB/sec (with data transferring in both directions) or 312MB/sec (with data transferring in only one direction).
On top of this, most cards now have a “V” (for video) rating, going from V6 all the way to V90, indicating write speeds of 6MB/sec to 90MB/sec. You need a V30 card to shoot 4K video at speeds of 60 to 120 frames per second, while V60 is the base level for shooting 8K video at 60fps. V90 is theoretically capable of handling 8K video at up to 120fps. However, given that only a handful of professional-grade cameras can offer that, and that they tend to use the larger CFexpress 2.0 cards for storage, this isn’t what you might call a must-have. SanDisk’s Extreme Pro microSD cards are ideal for high-speed data transfer. SanDisk claims world-first sequential read speeds of 200MB/s and write speeds up to 140MB/s, with a Video Speed Class 30 rating. Read on for our real-world testing results of their latest microSD card. SanDisk Extreme Pro microSD Specifications As a result, those hunting for the perfect balance of price and performance don’t need to look any further, and spending just a little more will get you your card bundled with Samsung’s excellent 160MB/sec USB card reader. What more could you want? With the right card reader, the Professional High-Speed version of the Ultima Pro can be a serious speed demon. With Integral’s own high-speed card reader, we were disappointed with its 99MB/sec and 88MB/sec sequential read/write speeds, but in a third-party high-speed reader, we saw read performance leap to 173MB/sec, with sequential write speeds of 139MB/sec. That write speed is the fastest we’ve seen from a UHS-I card.Capture fast-action photos or shoot 4K UHD video 2 with write speeds of up to 140MB/s. 8 The SanDisk Extreme PRO microSDXC UHS-I Card lets you shoot more and faster. Next and last is the synthetic IOMeter benchmark where I also included numbers for the Samsung PRO Plus. IOMeter Esto corresponde solo a la tarjeta. Consulta www.sandisk.com/proof para conocer las limitaciones y obtener información adicional. For 256GB-1TB: Up to 200MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Up to 140MB/s write speeds. For 64GB-128GB: Up to 200MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Up to 90MB/s write speeds. For 32GB: Up to 100MB/s read speeds; up to 90MB/s write speeds. Based on internal testing; performance may be lower depending upon host device interface, usage conditions and other factors. 1MB=1,000,000 bytes. The latest UHS-III standard is faster still, with speeds of up to 624MB/sec in both directions simultaneously, while the SD Express standard takes this up to a staggering 985MB/sec. However, neither standard seems to have taken off yet, either in terms of cards or the readers and devices to support them. Should I always buy the fastest card I can afford?
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