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Samsung 840 Pro 256GB SSD Review - Benchmarks - PCMark Vantage - Drives with Data Testing

By: Chris Ramseyer | SSDs in Storage | Posted: Feb 14, 2013 7:56 am
TweakTown Rating: 94%Manufacturer: Samsung

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.




The tiebreaker really comes right here, how do these two drives, the fastest consumer 256GB models in the world, perform when data is on the flash. The Samsung 840 Pro 256GB is faster than Vector when both drives are half-full with the same data.


CrystalDiskMark - Boot Drive, 206GB Data on Drive


Samsung 840 Pro 256GB with 206GB Data on Drive:




OCZ Vector 256GB with 206GB Data on Drive:




We've never shown this test before in a published article, but we have data for every SSD we've tested going back five months. A handful of tests are run when we add data to the drive in our Lenovo W530. The drives filled with control data until only 50GB of capacity remains on the test drive. This is also how we get the 50GB free Time to Windows Boot Test results as well.


These two images show what happens when we add data to an SSD.

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