Performance has been measured on two motherboards – ASRock Z97 OC Formula and ASUS Rampage V Extreme. We wanted to check how various USB 3.0 controllers are working with Lexar JumpDrive P20. Conclusion is similar to what you could see in the previous USB 3.0 drive reviews. General performance highly depends from used USB 3.0 controller and here I can say that most of them are underperforming. In most cases best results are on the Intel USB 3.0 controller but even then it’s not always possible to reach declared speed.
Final results also depend from used test files so may vary depends from benchmark.
Let’s take a quick look at the specification to check that Lexar JumpDrive P20 supposed to work with bandwidth up to 400MB/s read and 270MB/s write. Now we can move to our tests and check how it looks in real.
ATTO Disk Benchmark
Results in ATTO look great. We couldn’t reach declared by Lexar bandwidth because of USB controller limits but nearly 360MB/s read and 220MB/s write isn’t bad either. I don’t think anyone will complain for so fast mobile storage, especially that most external SSD can’t reach this speed and they cost much more.
CrystalDiskMark
In CrystalDiskMark write bandwidth looks much better. We can see 255MB/s result which is great for a drive this type. We can also see quite good random bandwidth results. Mobile drives generally base on sequential bandwidth but random transfers also count even though are not so important.
Other results in CrystalDiskMark are also on respectable level.
Anvil’s Storage Utilities
Results in Anvil’s benchmark are also good, especially when we look at read. Random read results are nearly twice as high as in CrystalDiskMark what only proves what I said earlier – test results depend from used test files. Anvil’s Storage Utilities is using different test procedure so bandwidth is also different.
General performance of Lexar JumpDrive P20 is great. We will have hard time looking for a faster flash drive on our market. I only hope that USB controller manufacturers will start to improve their products as in most USB 3.0 drive reviews we meet the same problems about maximum bandwidth which is hardly ever drive’s manufactuer fault.
Depends from used USB 3.0 controller ( in total we’ve checked 7 controllers on 4 motherboards ) maximum bandwidth was between 260 and 370MB/s. It means we are really far from theoretical ~500MB/s.
Regardless of mentioned problems, we are satisfied of Lexar JumpDrive P20 and I think all who decide on this product won’t be disappointed.
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