Speed of external SSD vs SSD inside computer?

2 years 7 months ago #664895 by Pat White
I'm running a Macbook that is on it's last leg.  I was looking at getting a new Macbook, but learned the new machines once you have bought them, can't be upgraded later.  So if I get a smaller hard drive to save money.  Can I use an external SSD to store stuff on?  And would the read and write speeds be the same as the an internal SSD hard drive? 


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2 years 7 months ago #664907 by Nikon Shooter
I use internal SSD for the OS and apps but I store nothing
on it except the current work files that are then archived to
an external drive.

If you can afford SSD storage, it is safer than spinning HD.

When it comes to speed, SSDs are faster than HDs and, ul-
timately, the transfer rate between USB and later USB-C
can't be bridged.

Light is free… capturing it is not!
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2 years 7 months ago #664939 by garyrhook

Pat White wrote: Can I use an external SSD to store stuff on?  And would the read and write speeds be the same as the an internal SSD hard drive? 


You may use any external medium you wish. I believe the newer systems use USB-C, which has a very high bandwidth, so transfer rates should be decent. I'm not going to go look it up, but I think USB-C is a bit slower than SATA. There's not much you can do about that.

And you're going to need another drive at some point anyway, so it's worthwhile to understand all of this from the start.

SSDs come at a variety of performance points. A Samsung 850 is, from memory, comparable to USB-C rates. So neither (or both) would be the bottleneck. Do some research to get some numbers, and then start shopping.


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2 years 7 months ago #665279 by D Hornick
Sandisk makes an "Extreme" external SSD that I have and use and while I can't comment on comparison speeds to internal, I'll tell you it's pretty fast to read and write too.  


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