Which SSD is faster?

TeckoHD

Reputable
Jul 17, 2014
174
0
4,690
Which one has a better price to performance ration and is faster? Samsung EVO 840 Pro 256GB MZ7PD256BW or the Crucial MX100 CT256MX100SSD1?
 
Do not be much swayed by vendor synthetic SSD benchmarks.
They are done with apps that push the SSD to it's maximum using queue lengths of 30 or so.
Most desktop users will do one or two things at a time, so they will see queue lengths of one or two.
What really counts is the response times, particularly for small random I/O. That is what the os does mostly.
For that, the response times of current SSD's are remarkably similar. And quick. They will be 50X faster than a hard drive.
In sequential operations, they will be 2x faster than a hard drive, perhaps 3x if you have a sata3 interface.
Larger SSD's are preferable. They have more nand chips that can be accessed in parallel. Sort of an internal raid-0 if you will.
Also, a SSD will slow down as it approaches full. That is because it will have a harder time finding free nand blocks to do an update without a read/write operation.
----------------bottom line-----------------
Performance is equal among all of them.