HD Tune PRO - Sequential Performance
Version and / or Patch Used: 4.55
This is a fun capacity size for us to look at because it's rapidly changing right now. Several manufacturers released new products in the last month. Some of the products focused on performance, others on cost, and none were as fast as the Extreme PRO.
SanDisk's use of 64Gb size die pays off in this capacity size as it delivers exceptional performance. In this series of tests, we start to wear the flash down. Before writing to the drive, we read from the user available LBA range to see formatted read performance on a fresh drive. The Extreme PRO 240GB outperforms the other drives on the chart, some by a large margin.
It's not difficult for the latest batch of consumer SSDs to read data quickly, but when writing to the full user capacity, the drives start to fan out. Here we easily see the performance leaders, the mid-tier, and the true bottom of the barrel drives. The Extreme PRO is in the first group, but we should point out that the Extreme II is actually a little faster in these early sequential tests.
HD Tach - Sequential Write Performance after Random Writes
Version and / or Patch Used: 220.127.116.11
After a reasonable number of random data writes to the drive, we tested the Extreme PRO 240GB in HD Tach to see the effect on sequential performance. This is an area where we've observed many new to market SSDs run into performance issues. The smaller capacity size drives with 128Gb die have problems because of the Yahtzee Effect. We'll post a detailed explanation about this in the coming weeks.
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