Hi,
The "Performance and Information" tool which was introduced in Windows Vista is no longer a part of Windows 8.1. Microsoft has removed this feature from Windows 8.1.
The Disk Defragmenter in Windows 8 and 8.1 is known as “Optimize Drives”, which can be launched by simply searching words “disk defrag” from the Start Screen. It’s not called Defragment anymore and here the drives are being optimized and not being defragmented.
Windows 8 and 8.1 improves SSD drive support by adding the option to optimize them using TRIM, a command that allows the operating system to inform a SSD which blocks of data are no longer considered in use and can be wiped internally. Another words, with the support of TRIM, Windows 8 and 8.1 is dealing with the garbage collection overhead much better than it used to be in Windows 7. It runs more efficient and extends SSD’s life cycle greatly. Because of this, do not exclude SSDs from your optimize drives operations. For information refer to this article:
Improve performance by optimizing your drive
Hope this is helpful.