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.
When you start to pile data on the drive, the MDSSD BP4 slows quite a bit. I just built a system with the 240GB drive and noticed the performance slowdown after getting the system finished with all of the software installed.
The performance is still very good, but what you see on the chart between BP4 and the 840 Pro is accurate. 840 Pro in this capacity still has some issues that you can read about in our review. The price difference between these two drives is significant and the price vs. performance ratio would lead me to look at the BP4 over the 840 Pro in this capacity size.
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