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SanDisk Ultra II 240GB SSD Review - SanDisk TLC NAND Flash takes shape

By: Chris Ramseyer | SSDs in Storage | Posted: Sep 12, 2014 5:00 pm
TweakTown Rating: 92%Manufacturer: SanDisk

Anvil Storage Utilities


Version and / or Patch Used: RC6


So what is Anvil Storage Utilities? First of all, it's a storage benchmark for SSDs and HDDs where you can check and monitor your performance. The Standard Storage Benchmark performs a series of tests; you can run a full test or just the read or the write test, or you can run a single test, i.e. 4k QD16.


Anvil Storage Utilities is not officially available yet, but we've been playing with the beta for several months now. The author, Anvil on several international forums, has been updating the software steadily and is adding new features every couple of months.


We can use Anvil several different ways to show different aspects for each drive. We've chosen to use this software to show the performance of a drive with two different data sets. The first is with compressible data and the second data set is incompressible data. Several users have requested this data in our SSD reviews.



0-Fill Compressible Data




Incompressible Data




The performance with compressible data and incompressible data is the same, so you don't have to worry about performance loss while editing audio and video files.



Low Queue Depth Read IOPS




The Ultra II produced 9600 random read IOPS at QD1, around 1300 more than the MX100 and even more over the ARC 100. The 840 EVO does a bit better at QD1, but by QD2 and beyond, the Ultra II delivers more performance.


High Queue Depth Read IOPS




Most of us will never hit the queue depths in this chart and especially not with the workloads the Ultra II was designed for. Still, the Ultra II 240GB hits 90K random IOPS at QD32, but more importantly, the performance scales as the depth increases.


Low Queue Depth Write IOPS




It's easier to hit higher queue depths when writing data to the SSD since most writes happen in bursts, like when installing programs, running Windows Updates and so on. The Ultra II scales really well in our random writes test. We a bit surprised to see the MX100 doing a bit better in the low queue depths though since the Ultra II has an SLC layer.


High Queue Depth Write IOPS




Most of the drives on the chart have reached the maximum random write performance by QD8.

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