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Macintosh1984

macrumors 6502
Original poster
Dec 15, 2012
324
46
Hi!

I have a iMac 27 "Late 2012 with USB 3.1 Gen 1 + Thunderbolt 1.

I would like to buy an external SSD portable hard drive.

I was thinking of the Transcend StoreJet 500 because it seems to me the only one with a Thunderbolt 1 port that reaches theoretically:
Read: 440 MB / s
Write: 300 MB / s

Then there are an infinite number of other SSDs like the
- Samsung T5
- Western Digital My Passport SSD
- SanDisk Extreme SSD

But I'm confusing myself with the real performance they achieve compared to the Transcend StoreJet 500 because they always mention USB 3.1 Gen 2 and therefore I can't understand connecting it to USB 3.1 Gen 1 what performance you get.

I believe I should choose Transcend StoreJet 500 because Thunderbolt 1 is superior to USB 3.1 Gen 1, don't you think?
 

Stephen.R

Suspended
Nov 2, 2018
4,356
4,746
Thailand
Based on the speeds mentioned it's a SATA SSD, so USB 3/3.1G1 is not going to be noticeably slower than USB3.1G2 or TB3 for a single drive.
 

Fishrrman

macrumors Penryn
Feb 20, 2009
28,491
12,626
"I was thinking of the Transcend StoreJet 500 because it seems to me the only one with a Thunderbolt 1 port that reaches theoretically:
Read: 440 MB / s
Write: 300 MB / s"


NOPE.

Any decent USB3 SSD will yield about 430mbps reads and writes in the 325-375 range.

You DON'T NEED to pay extra for Thunderbolt for this.
 
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Macintosh1984

macrumors 6502
Original poster
Dec 15, 2012
324
46
OK, I think I go for Samsung T5 or SanDisk Extreme SSD, anyway USB.

Samsung T5 with USB 3.1 Gen 1 get top performance, or better when connected to USB 3.1 Gen 2?

Last question, what about the situation about Thunderbolt 1 and double channel about simultaneous Read/Write data?
 

Macintosh1984

macrumors 6502
Original poster
Dec 15, 2012
324
46
Incredibly satisfied with my new Samsung T5, even faster than my internal Fusion Drive, maybe because it's still full of data.

I formatted it in APFS making it also bootable.

I hope to continue to appreciate it with time.

At the passage of Apple's new macOS in September-October, I believe I will split the Fusion Drive.
 

richpjr

macrumors 68040
May 9, 2006
3,530
2,278
Incredibly satisfied with my new Samsung T5, even faster than my internal Fusion Drive, maybe because it's still full of data.

I formatted it in APFS making it also bootable.

I hope to continue to appreciate it with time.

At the passage of Apple's new macOS in September-October, I believe I will split the Fusion Drive.

Good to hear it’s working out for you. What size did you get?
 

Macintosh1984

macrumors 6502
Original poster
Dec 15, 2012
324
46
500 GB. I want to use SSD for normal use ad an old Western Digital 1 TB as data archive for documents which I don't use frequently.
 
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