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Samsung XP941 512GB M.2 PCIe SSD Review

By: Chris Ramseyer | SSDs in Storage | Posted: May 20, 2014 7:18 pm
TweakTown Rating: 92%Manufacturer: RamCity

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.


The software can be used 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 Samsung XP941 doesn't differentiate between compressible and incompressible data, so the performance is nearly identical when writing both data types.



Read IOPS through Queue Depth Scale




The QD1 random read performance is nearly as high as the 840 EVO and Pro. The latency hasn't decreased by a significant amount due to the AHCI driver set in individual tests.


At the upper levels of the queue depth scale, the XP941 gets to stretch its legs. The QD32 4k random read performance is nearly 130,000 IOPS. You can't get to that level with SATA.


Scaling Write IOPS through Queue Scale




At this time, we're still not sure if the XP941 uses Turbo Write like the 840 EVO. QD1 random write performance is 32k. The QD32 random write test surpassed 78k, much lower than what we expected since the EVO and Pro achieve 90k IOPS.

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