SSD in a USB3 enclosure, awful speeds (normal?)

Toggle sidebar Toggle sidebar
G

gunner007

Honorable
Aug 24, 2013
16
0
10,510
So I picked up a USB3.1 enclosure (Vantec)

http://www.amazon.com/Vantec-SATA-Type--Enclosure-NST-270A31-BK/dp/B00WT99FE2/ref=sr_1_1?ie=UTF8&qid=1464898634&sr=8-1&keywords=NST-270A31-BK

I figured I'd give one of my SSD's life in it (Old crappy Patriot Blast 120GB), however after hooking it up and running through my old USB3 I'm getting copy speeds (4GB test file) of anywhere from 20-60MB/s.

If I hook up my old spinning HGST 1TB 5400RPM drive, I can easily hit 135MB/s throughout the transfer. Are the SSD's just that terrible without TRIM? I can't imagine it'd be worse than a spinning drive itself.

I'm just wondering if I got a really bad pair of SSD (only difference is 90GB/120GB both are SATA6GBPS), because the reviews I see from much older Sandforce SSD are shoing 400MB/s easily where this one can't muster more than 60MB (and incredibly inconsistent - lots of peaks/valleys)
 
Sort by date Sort by votes
G

gunner007

Honorable
Aug 24, 2013
16
0
10,510
It does. Both my 5TB USB3 (Seagate FreeAgent) and this enclosure show up as USB Attached SCSI (UAS) Mass Storage Device

So tried my EVO 850 and had the same result. Swapped cables and now it shot up to 350MB/s which looks a lot better, went back to the included cable and still hanging in there.

If I swap back to the Patriot SSD though it's still terrible. I guess the controller (let's face it it's a shitty brand) doesn't like it.
 
Upvote 0 Downvote
G

gunner007

Honorable
Aug 24, 2013
16
0
10,510
Well sadly this is used for a laptop so it sort of needs to be portable. Sadly it seems either I have terrible luck or all these enclosures use the same chipset. Even with my Samsung EVO 850 in 3 different 3.1 enclosures they burst for 10 seconds at 300MB/s then fall down to 120MB. So at that point it's not even worth putting the SSD inside the enclosure. (It gets even worse with the crappy Patriot SSD)
 
Upvote 0 Downvote
ema21del9

ema21del9

Reputable
May 23, 2016
556
0
5,160


You get those speeds when copying 1 single large file or multiple?
 
Upvote 0 Downvote
G

gunner007

Honorable
Aug 24, 2013
16
0
10,510
Single large file (worse with multiple obviously)

I tried with a 4GB ISO for Windows 10, and a 30GB system image. (Also tried a 30GB directory)

What was strange was with the SSD, it would shoot to 300MB/S fro the first 10s of the transfer, then fall to 100MB/s and bounce around 90-110 for awhile. The regular spinning 7200RPM notebook HDD would ping at 130MB/S and stay there the whole transfer.

Tried the enclosures on a different PC and same result - so I'm guessing these enclosures just don't do well with SSD's in them as with a 7200RPM drive inside, they easily saturate the 130MB/s a spinning drive can achieve with no sweat.
 
Upvote 0 Downvote
ema21del9

ema21del9

Reputable
May 23, 2016
556
0
5,160


Yup it's really weird, I've seen SSD's connected through enclosures having some nice speeds up to 350Mbps.
 
Upvote 0 Downvote
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom