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MyDigitalSSD BP4 240GB mSATA Review (Page 10)

By Chris Ramseyer from May 31, 2013 @ 8:09 CDT
TweakTown Rating: 91%Manufacturer: MyDigitalSSD

PCMark Vantage - Drives with Data Testing

For a complete breakdown on the Drives with Data Testing please read this article. You will be able to perform this test at home with the files provided in the article - full instructions are included.

- Brief Methodology

SSDs perform differently when used for a period of time and when data is already present on the drive. The purpose of the Drives with Data testing is to show how a drive performs in these 'dirty' states. SSDs also need time to recover, either with TRIM or onboard garbage collection methods.

Drives with Data Testing - 25%, 50%, 75% Full States and Dirty / Empty Test

Files needed for 60 (64GB), 120 (128GB), 240 (256GB)

60GB Fill - 15GB, 30GB, 45GB

120GB Fill - 30GB, 60GB, 90GB

240GB Fill - 60GB, 120GB, 160GB

Empty but Dirty - a test run just after the fill tests and shows if a drive needs time to recover or if performance is instantly restored.

mydigitalssd_bp4_240gb_msata_review_63

Once we start getting data on the drives, the BP4 drops off fast and then, even after deleting the data, the recovery time is high. Normally we would point to this behavior in our TRIM test (green bar) and say that TRIM isn't working. That isn't the case, TRIM is working - it just takes a lot longer to complete the operation. A lot in this case is around ten minutes.

Running the test again ten minutes after the last standard test shows performance is once again back to light use levels. Our published results have a set amount of time between each test for consistency.

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