crystal disk mark output sandisk ultra 200 gb

Most cheap microSD cards, even if rated as being 100MB/sec+ class 10 cards, can't sustain anywhere near that rate when writing random data-especially on the Raspberry Pi's measly data bus. I like the lower block size random I/O tests especially, because many operations (like logging data, writing a row to an ACID-compliant database, or bulk loading of data) require as fast of small-block-size random I/O as possible. Rationale: iozone is a very robust filesystem benchmark tool, which does a lot of useful tests that make sure you're getting a broad overview of read and write performance for a variety of block sizes and situations. Other than that, I'd go with the SanDisk Extreme, as it can be had for about the same price, or the Samsung Evo (without the +), as it can be had for even less if you just need 8 or 16 GB.Ģ015 Winner: Samsung Evo+ 32 GB (~$12 on Amazon) Benchmarks hdparm buffered And this year, I've seen it on sale for $10-20 for 32 or 64 GB, so it's a steal. price, there are a couple clear standout cards-one is the Samsung Evo+, which is the fastest card for random access by a mile. Here are the results of those efforts, in a nice tabular format:Īfter using most of these cards in different situations over the past year or so (some for Pis running MySQL, others for file shares, and yet others just doing data logging and web dashboard displays), I've also noted that reliability-wise, all of the 16 cards I've used so far (even the no-name C4 card) have been flawless. As an example, if you use a normal, cheap microSD card for your database server, normal database operations can literally be 100x slower than if you used a standard microSD card.īecause of this, I went and purchased over a dozen different cards and have been putting them through their paces. There is an order-of-magnitude difference between most cheap cards and the slightly-more-expensive ones (even if both are rated as being in the same class)-especially in small-block random I/O performance. In my experience, one of the highest-impact upgrades you can perform to increase Raspberry Pi performance is to buy the fastest possible microSD card-especially for applications where you need to do a lot of random reads and writes.

This post's benchmarks were performed on a Raspberry Pi 2 for all the latest benchmarks, on Raspberry Pi 3 or later revisions, check out the official Pi Dramble microSD card Benchmarks page. 2018 Update: Please see the latest benchmarks in 2018 using a Raspberry Pi model 3 B+.

Crystal disk mark output sandisk ultra 200 gb