Hi, I'm new here so I hope I POSTED this in the right section.
I'm building a custom laptop and I want to know that if I have a 256Gb Msata and a 1Tb hybrid disk drive then will my laptop boot up programs and run as fast as a laptop with an SSD drive?
Much Obliged...There is little point getting a hybrid disk and an mSATA SSD.  I WOULD recommend using the SSD to HOLD your OS and programs then store LARGE files on the SSD.

mSATA SSDs perform pretty much the same as a regular SSD, they are just a different form factor.I see what you're saying and I thank you for your reply but the site on which I'm building this only permits 512/256Gb mSATA SSSD and 1Tb SSHD or 1Tb HDDThat's fine, there's no harm getting a SSHD and an SSD although it's not really worthwhile.  You may just want to go down to the regular 1tb HDD unless the price difference is tiny.But will it affect my SPEED in any way?Not much, you'd be keeping programs and your OS on the SSD so the HDD is only going to hold  your large files.  SSHDs don't really give a massive speed improvement to files, only OS and programs which you won't be storing on it.Ok, thank you soo much. Very grateful to finally be getting a clear answer. Best regards.
*EDIT* I'll properly thank you when I get the Karma!