Editor Note: After this article was published we learned that TRIM was not working on our test system at the time the Extreme 240GB was tested. A follow up article has been published with accurate benchmarks. Please read it here.
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.
HDD1 - Windows Defender
HDD2 - Gaming
HDD3 - Windows Photo Gallery
HDD4 - Vista Startup
HDD5 - Windows Movie Maker
HDD6 - Windows Media Center
HDD7 - Windows Media Player
HDD8 - Application Loading
Ah, don't count the SanDisk Extreme out just yet. As we've mentioned we're playing with a new flash type here and with new flash comes new surprises. The SanDisk Extreme only scored 64K when the drive was empty, but you and I don't boot off empty drives. With the SanDisk Extreme half full it delivers 53K Marks which is even faster than the OCZ Vertex 3 240GB when we tested it!
We've been saying for nearly a year now that we want to see SSDs keep their performance as the drive fills, we want constant performance that is predictable. In our testing we see the SanDisk Extreme giving us predictable performance in the 25%, 50% and 75% full tests.