SanDisk Extreme microSDXC UHS-I Memory Card Review - HotHardware

SanDisk Extreme microSDXC UHS-I Memory Card Review

6 thumbs up

To evaluate the performance of SanDisk’s Extreme microSDXC card, we plugged into a USB 3.0 FCR-HS3 card reader, connected to our Core i7-3960X / X79 Express-based test system, running Windows 8 Pro x64. In addition to monitoring performance during simple file transfers, we also ran a trio of benchmarks to see how the card handled different data types and transfer sizes. First up, ATTO’s Disk Benchmark.

As you can see in the image above, the SanDisk’s Extreme microSDXC card doesn’t hit its stride until the 64K mark, but when it does, performance actually exceeds SanDisk’s specified 80MB/s (read) and 50MB/s write speeds. According to ATTO, the SanDisk Extreme microSDXC card peaks at about 94.5MB/s and 61.7MB/s, for reads and writes, respectively.

CrystalDiskMark tells essentially the same story as ATTO. In this benchmarks, SanDisk’s Extreme microSDXC card tops out with 92.56MB/s and 61.45MB/s sequential reads and writes. Performance is also good in the 512K test, though the card struggles with smaller 4K transfers.

Finally we ran Anvil’s Storage Utilities SSD benchmark. This test is complete overkill for a microSDXC card, but if you want to full scoop on the SanDisk Extreme microSDXC card’s performance, there it is. As you can see, in the Sequential 4MB tests, the card has no trouble exceeding the speeds listed in card’s specifications.

We should also note that we monitored transfer speeds in a number of everyday usage scenarios, copying images and videos to and from the card, and it regularly exceeded SanDisk’s specifications. Read speeds of 88MB/s were common, with 58MB/s writes.

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MAN I love tiny cards with a huge amount of data. Seeing pictures of devices the size of a car holding 1MB blows my mind. We are so spoiled now. Can't wait for 1TB SD cards!

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Last I saw mobile phones limited the memory sizes coming from these cards. My previous phone could only handle 16gb extra. Did they increase this recently?

I would love this in a camera or a 3DS, but they use mostly standard SD cards I thought. I think trending towards these smaller cards is in the works though/hopefully.

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These cards are crazy goog. Have one in my tablet, it never lags and transfers quick as all hell!

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Excellent performance, it needs to be priced a bit lower though, I recently purchased a Sandisk Ultra 64gb Microsd for £33, will stick with that until the new ones decrease in price.

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SD cards are great. Durable, portable, spacious...they've got so many advantages over other media options.

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If you are looking for a new memory card than buy a new SanDisk MicroSD Card 16 GB Class 10 Ultra with high storage capacity and advanced features.

get the product at its best cheap price at :

Order Now 

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have 32's in my phone and tablet, never had any problems. Look at Best Buy's "Deal of the Day" for these, I found one for $18.

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We have an LG-A380 flip phone from AT&T carrier. We had probs with the small memory built into the phone. But both AT&T tech and store guys didn't know what to do. One tech chat guy tried to scare me off: "Oh, you'll have to tear apart the phone and the memory is built in." He didn't know the phone supports an expansion MicroSD up to 32-GB. I bought the SanDisk Extreme 32GB today, and am so happy.

By the way, the LG-A380 does not show its slot. It is hidden under the battery cover. You have to remove the back battery cover, move the battery out, and then you can see the little 1/2 inch slot that takes the expansion card. This is hardly "tearing the phone apart." Nobody at AT&T told me this, I discovered it on my own.

I think they want to sell their more expensive plans and therefore push the use of iphones. One AT&T guy said, "We've changed the MyAT&T site several times, and so your phone can't access it because it can't handle too much data." Yes, of course, until I install my new MicroSDHD Extreme. Ha ha to you, AT&T!

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