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armut

macrumors member
Original poster
Jul 9, 2014
66
8
Hello people,

I'm editing videos on my iMac 14,2 in Final Cut Pro.
As you know, the replacement of a SSD in iMac is not possible, so I want to buy an external SSD for moving my project on that drive.

I will use the SSD via USB because thunderbolt solutions are to expensive and I don't want to spend so much money.
My only concern is the TRIM, because external devices connected via USB are not supporting TRIM.
Do you have any experience for editing videos on external SSDs via USB?
Did you recognoze some performance drop from the SSD?
Or is TRIM just overrated, so that I can ignore this function?

Many thanks in advance :)
 

Fishrrman

macrumors Penryn
Feb 20, 2009
27,227
11,606
Samsung t5.

TRIM won't matter on a non-booting external SSD.
Don't worry about it.
 

armut

macrumors member
Original poster
Jul 9, 2014
66
8
Please don’t misunderstand me but are you really sure?
 

LS417

macrumors regular
Oct 30, 2009
134
18
Fishrrman is correct that TRIM is not consequential on a non-booting drive.

You should also check out Glyph’s Atom if you’re looking for small form factor.
 

armut

macrumors member
Original poster
Jul 9, 2014
66
8
Thank you very much, I will check your recommended device.

EDIT:
Could you maybe explaine also why external SSD which is not a bootable OS do not need TRIM please?
 
Last edited:

MRrainer

macrumors 65816
Aug 8, 2008
1,497
1,082
Zurich, Switzerland
Not sure if using an SSD over USB is that great for editing videos.

I don't edit videos myself, so I can't say. I would imagine you'd want to have the guaranteed, sustained write performance of an Enterprise SSD for that. And those are only available in PCIe or U.2 form-factor.
 

LS417

macrumors regular
Oct 30, 2009
134
18
Not sure if using an SSD over USB is that great for editing videos.

I don't edit videos myself, so I can't say. I would imagine you'd want to have the guaranteed, sustained write performance of an Enterprise SSD for that. And those are only available in PCIe or U.2 form-factor.

Both the Glyph and Samsung will have no problems sustaining the 400+ mb/s over usb 3.0. Perfectly fine for video editing.

If you’re dealing with 4K video and want to edit at full resolution, you’ll want to look at faster options.

One option is pci-e ssd but then you’ll need Thunderbolt 2 or 3 ports. Another option is glyph’s atom raid, which hits around 900mb/s over usb-c.
 

armut

macrumors member
Original poster
Jul 9, 2014
66
8
Hmm, ok. Many thanks for your answers.
I first will try to use an EVO 850 with external enclosure.
For now I'm only editing in 1080p with optimized media. I think than, this should not be a problem.
In future I will check how the external SSD handles 4K media.
 
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