Question Inland 1TB write performance degradation?

1984_C10

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Jun 14, 2019
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Yesterday i returned my main SSD, an Inland Premium 1TB to my motherboard after running a SATA drive for a few days for testing.
Anyway, i decided to benchmark the drive since i haven't done it in a year or more, i downloaded CrystalDiskMark and went to town.
Read speeds are correct, but write speeds concerned me a bit, it was way lower than last year, i tried changing modes in Crystal to make sure, but it either gave me the same or worse results.
I downloaded AS SSD, which i had never used before and tested again, now that one gave me a much more similar result in comparison with last year's test, so, what's the deal with the result discrepancy?
I also noticed, comparing CrystalDiskMark 8 and CristalDiskMark 6 screenshoots, is that the benchmarks have different names, therefore different functions, so maybe the result is correct and i'm just being paranoid?
It seems that the write speed are very degraded, even after TRIM.
Here are the benchmarks:
Last year (CrystalDiskMark 6):

dBGtEUi.jpg


Yesterday (CrystalDiskMark 8 + AS SSD):

CRpbBnL.png
 
Last edited:
They test in different ways 5gb size for as-ssd and 20gb for CDM for starters. Q1, Q32 is the Queue depth, which is how many commands are trying to execute at the same time from single thread. T= threads so 8 threads is like 8 different processes each requesting data. Therefore q32t8 is 32 command from each of 8 threads.
 
They test in different ways 5gb size for as-ssd and 20gb for CDM for starters. Q1, Q32 is the Queue depth, which is how many commands are trying to execute at the same time from single thread. T= threads so 8 threads is like 8 different processes each requesting data. Therefore q32t8 is 32 command from each of 8 threads.
What is bugging me is the write performance loss after a year, i wondered if it was due to degradation, but in theory it shouldn't be so severe.
I also retested with CrystalDiskMark6 earlier on and still got a much lower write rate in comparison with last year.
94cb901069e7e136557560b8d7eebd80e14f82ce.png
 

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