USB-C to USB-A Performance Differences

Contents

  • ATTO Disk Benchmark (USB-C vs USB-A 3.0)

Oddly enough, we can see here that both USB-A and USB-C received identical performance on all 3 tests, that is pretty unheard of.  This tells us that the speeds are capped off at USB 3.0 speeds but that’s not a horrible thing since USB 3.0 speeds are nice, though not as good as USB-C.  USB-C is capable of up to 10Gbps, though I will show you the other comparisons, I don’t think they will all be identical.  Let’s see what CrystalDiskMark shows us.

  • CrystalDiskMark (USB-C vs USB-A 3.0)

It seems like the CrystalDiskMark shows a bit of a different performance mark, a bit more varied and seemingly in favor of USB-A 3.0.  USB-C overpowers USB-A 3.0 in 4K Read and Write as well as Seq Write and Seq Q32TI Write.  On the flip side, USB-A 3.0 performs better than USB-C in Seq Read, 4K Q32TI, 4K Q32TI Write, and Seq Q32TI Read, so it still might be somewhat equal.  The big differentiator here is that 4K Q32TI Read was 6.5 times slower on USB-C than in USB-A 3.0.  Let’s check out PCMark.

  • PCMark 8 (USB-C vs USB-A 3.0)

This one is a little more difficult to see because of the number of tests but it looks like USB-A 3.0 took the cake and performed much better.  The loading times on all programs were much lower on the USB-A 3.0 interface but was oddly enough lower by 1 second on the test duration on USB-C interface.  Storage Bandwidth and PCMark scores are better higher, which is why they came out bolded and in red font above, which means they were better.  The highest difference came in the Battlefield 3 load time, which USB-A 3.0 loaded 7 seconds faster.

This test also shows you that this drive is not only great for storage of music, movies and all-around storage but also a great solution for a portable gaming drive.  Talking about storage and performance, let’s see how this stacks up against a standard thumb drive.  To keep it short and simple though, we will stick to only CrystalDiskMark performance comparison, it will be a test utilizing the Sandisk SDDDC2-032G-A46 Ultra on USB-C and USB-A 3.0.

The Sandisk SDDDC2-032G-A46 Ultra on USB-C and USB-A 3.0 drive is unique because it is not only a USB-A 3.0 drive, but it is also a USB-C thumb drive.  This test will give you an example of both interfaces.

Since this is marketed as an SSD, I figure it might be great to show you the performance benefits versus SSD’s that go inside of a system.  This is slightly going outside of scope of what this drive is targeted for portable storage but it’s an example of the difference between what is marketed as a USB Thumb Drive and a USB SSD.

The difference here is amazing, both drives have the option for USB-A 3.0 and USB-C but the transfer rates are drastically different.  Like we saw before, the scores between the Glyph Atom USB-C and USB-A are varied, some higher than others and visa versa but we can see here that the Sandisk took the lead in none of the readings.  The Glyph, while it is connected through the same interfaces as the Sandisk, it is in fact an SSD inside and so it gets the benefits of that performance.

So what is it that makes this drive an SSD, lets take a deeper dive and see what’s inside.

Next PageWhat’s inside?

Iggy Castillo

Iggy Castillo

Senior Editor an Reviewer at Dragonblogger.com
I have spent many years in the PC boutique name space as Product Development Engineer for Alienware and later Dell through Alienware's acquisition and finally Velocity Micro. During these years I spent my time developing new configurations, products and technologies with companies such as AMD, Asus, Intel, Microsoft, NVIDIA and more. The Arts, Gaming, New & Old technologies drive my interests and passion. Now as my day job, I am an IT Manager but doing reviews on my time and my dime.
Iggy Castillo

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I love the arts and technology. IT Manager by day at Jewett Automation and Reviewer by night at https://t.co/eYqx0uJofz and my own at @ThisBytesForYou
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Iggy Castillo