SD card as a boot drive

Atoss

Reputable
May 3, 2014
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So, I've been drooling upon the performance of SSDs, and shivering upon the sight of my empty wallet. In a moment of insanity, I decided to research the viability of SD card for a boot drive, as it would cost significantly less than a combo drive (a pure SSD isn't an option, this is a laptop, and I do need that optical drive).
The problem is, I can't find anything that would make me either try the idea out or write it off. Two things that I am most concerned of is the read/write limit of the SD cards, and the speed - according to Wikipedia, even the UHS3 class cards are capable of only 30 MB/s, while SATA II does 300.
So, my question is, would this work or not?
 


Care to elaborate? As in, what would be the problem? Speed? The SD card would hit the write limit soon? Something else I am not aware of?