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SanDisk Extreme 240GB SSD with 24nm Toggle Mode Flash Review - Benchmarks - AS SSD

By: Chris Ramseyer | SSDs in Storage | Posted: Feb 28, 2012 9:15 am
TweakTown Rating: 91%Manufacturer: SanDisk

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.


AS SSD Benchmark


Version and / or Patch Used: 1.2.3577.40358

Developer Homepage: Alex Intelligent Software

Product Homepage: Alex Intelligent Software

Download here:


AS determines the performance of Solid State Drives (SSD). The tool contains four synthetic as well as three practice tests. The synthetic tests are to determine the sequential and random read and write performance of the SSD. These tests are carried out without the use of the operating system caches.


In all synthetic tests the test file size is 1GB. AS can also determine the access time of the SSD, the access of which the drive is determined to read through the entire capacity of the SSD (Full Stroke). The write access test is only to be met with a 1 GB big test file. At the end of the tests three values for the read and write as well as the overall performance will be issued. In addition to the calculated values which are shown in MB/s, they are also represented in IO per seconds (IOPS).


Note: AS SSD is a great benchmark for many tests, but since Crystal Disk Mark covers a broader range of 4K tests and HD Tune Pro covering sequential speeds, we will only use the Copy Benchmark from AS SSD.


- Copy Benchmark




Keeping with the surprises, this one not so pleasant, we have the data copy test. A handful of the newer SandForce SSDs like the Corsair Force GT perform very well in this test, but the SanDisk Extreme doesn't follow suit. The Extreme is still faster than any platter based HDD, but falls well short of some other SSDs based on the SF-2281 controller.

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