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Corsair Neutron NX500 400GB & 800GB NVMe PCIe SSD Review (Page 5)

By Jon Coulter from Aug 10, 2017 @ 7:59 CDT
TweakTown Rating: 91%Manufacturer: Corsair

CrystalDiskMark

Version and / or Patch Used: 3.0 Technical Preview

CrystalDiskMark is disk benchmark software that allows us to benchmark 4k and 4k queue depths with accuracy. Note: Crystal Disk Mark 3.0 Technical Preview was used for these tests since it offers the ability to measure native command queuing at QD4. When evaluating CDM results, we focus on 4K random performance at QD1 and QD4.

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Focusing in on QD1 and QD4 reveals the 400GB NX500 holding an advantage over the 800GB model. At QD1, the NX500 is outperformed by several of the SSDs in our test pool. At QD4, the NX500 beats all of the contenders in our test pool except Samsung's 950 Pro which is a juggernaut when it comes to read performance.

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The smaller SLC cache that comes with Phison 4.x series firmware handicaps random write performance at low queue depths. We can see this by comparing the NX500 to MDD's BPX. We believe that Phison is somehow gaining sequential performance at the expense of random performance. Look at how much better the NX500's sequential performance at QD1 is in comparison to the BPX.

AS SSD

Version and / or Patch Used: 1.8.5611.39791

AS SSD determines the performance of SSDs. The tool contains four synthetic as well as three practice tests. The synthetic tests are to determine the sequential and random read and write performance of the SSD. We evaluate AS SSD performance in terms of overall score. We are looking for a minimum score of 2,000 when evaluating NVMe SSDs

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AS SSD is a demanding test, and the NX500 has no problem exceeding our minimum standard of 2,000 at both capacity points. The BPX with its larger cache manages to deliver a better score than the NX500 despite being a lower grade SSD than the NX500. Intel's 750 series SSD's dominate the scoring due to their 18-channel controller's superior multi-threaded random read performance.

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