My TBU 405 now has arrived along with a SN 850X😀
i wonder how do you guys measure the temperature of the SSD.
is there an app or something?
TG Pro or Smartmontools
My TBU 405 now has arrived along with a SN 850X😀
i wonder how do you guys measure the temperature of the SSD.
is there an app or something?
Seems correct to me.I've just purchased an Acasis TBU405 + Kingston NV2 NVMe PCIe 4.0 SSD 2To.
It is recognized as a TB3 device on a mac mini m2.
It is right ?
Search for stuff from Sonnet or OWC?I'm searching for an enclosure with:
- 4x u.2/u.3 slots
or
- 8x m.2 slots
- Thunderbolt
Any links?
The iodyne Pro Data.I'm searching for an enclosure with:
- 4x u.2/u.3 slots
or
- 8x m.2 slots
- Thunderbolt
Any links?
light does not go out on the Acasis enclosure when in sleep mode, so it is still on, but the case is not as warm, so it looks like so far it goes into a low power mode during sleep. Not totally sure yet (just got it), but will do some testing to see.
You can use coconut battery to estimate the battery power draw. Note the "discharging with" value without the enclosure connected and check it when the enclosure is connected and idle for a few minutes.
Not yet..had some projects to finish. I have my MacBook Pro 2021 attached to the Apple Display Monitor, so not running on battery. I will check it out next week when I have a lesser load. Will report back after.Hi. Were you able to test this out?
Yes, who else would really need that many NVMe drives?!From $4450 😱
Definitely for professionals
I bought with a good discount Orico M208C3-U4.
To check, until my KC3000 2TB arrived, I installed the 970evo plus 1TB. And I'm generally happy with the result.
I wonder about my results using TBU-405/SN850X 4TB. I get significantly worse write speeds than you in Amorphous diskmark, but it looks fine in Blackmagic Disk Speed?So my WD SN850X 4TB arrived, I put it in the TBU-405 Pro M1 for some tests.
Speed:
See the AmorphousDiskMark screenshot(s), I have 2 sticks of SN850X 4TB, the left in dark was tested in just TBU-405 and the right in light mode is the new stick in TBU-405 Pro M1. More or less identical.
(Interestingly I used ATTO Disk Benchmark for testing too and they gave me very different graphs, I suspect I did something wrong or the app has changed something but I didn't investigate further.)
Temps:
The test was done in this environment: everything inside a network cabinet with ambient temp of 31C when the test started, host is Mac Studio, transferring 1.8TB of RAW photos and some Lightroom catalogues from a JEYI with SX8200pro 2TB to the TBU-405ProM1 with SN850X 4TB. (I wish I still have the TBU-405 with me, but it was taken by my colleague on a trip to another country)
I think the image explains better than what I can type, so I will only say the takeaway:
1) the enclosure is bigger than average, at low activity the passive cooling alone is adequate
2) somehow the JEYI starts higher but doesn't get as hot as the Acasis, but it may have to do with one of them reading while the other writing, and of course being different SSDs also
3) I switched the fan on half way, but the fan seems really weak and close to useless. May be if the ambient temp is at room temp or even lower it will matter more, but not for my setting. My Mac Studio have to permanently sit inside a cabinet along with its peripherals.
During the hottest moments I used an IR gun to read the enclosure external temp:
JEYI: 55.2C
Acasis: 43.9C
P.S. the Acasis box came with 2 thermal pads and I had to stack them on top of each other in order for the NVMe stick to touch the chassis
Your drive is already half full, while it shouldn't affect write performance that much but it may contribute a bit. And then by default, the BlackMagic test uses 5GiB chucks for endless passes until you click STOP, wheres the CrystalDisk shows you the options in the drop downs you can see, the default is 5 passes 1GiB that you didn't change.I wonder about my results using TBU-405/SN850X 4TB. I get significantly worse write speeds than you in Amorphous diskmark, but it looks fine in Blackmagic Disk Speed?
View attachment 2254661 View attachment 2254662
I have now tried to connect it to the USB port on my iMac and now I get 870 mb/s write/read. This indicates that it is not the disk that is faulty? Is there a way to reset the thunderbolt ports?Your drive is already half full, while it shouldn't affect write performance that much but it may contribute a bit. And then by default, the BlackMagic test uses 5GiB chucks for endless passes until you click STOP, wheres the CrystalDisk shows you the options in the drop downs you can see, the default is 5 passes 1GiB that you didn't change.
I am not so sure what is happening, but at least try to match both test parameters then see if there's still differences. BlackMagic is quite simplistic in what it can do, it just looks pretty and easier to understand that's why people use it. Nowadays AmorphousDisk is the go to for a brief test, and for detailed test uses ATTO.
I tried it with a 110 GB folder from the desktop of my iMac m1 to ext. TBU-405 with an SN 850x and got this. I guess it looks OK?I remember some people reporting slow write speeds over thunderbolt on M1 Macs (Macbook air, Mac mini), like here for example : https://discussions.apple.com/thread/253097384
The question is : how does the drive perform in real world tests ? Try copying a 400 GB folder (with large files like raw files or movies) to the sn850x and check the actual write speed in activity monitor.
This is what I get for the TBU-405/SN850X 4TB combo :
View attachment 2254779
'Données lues/s' = data read/sec
'Données écrites/s' = data written/sec
'Go' = GB
That's 2.70 GB/sec read/write performance in finder copy.
And these are my AmorphousDiskMark results for the TBU-405/SN850X 4TB combo, on a M2 Ultra Mac Studio :
View attachment 2254784
Looks perfectly fine to me, I wouldn't worry about the AmorphousDiskMark result.I tried it with a 110 GB folder from the desktop of my iMac m1 to ext. TBU-405 with an SN 850x and got this. I guess it looks OK?
View attachment 2254817
Thanks for the tip.Looks perfectly fine to me, I wouldn't worry about the AmorphousDiskMark result.
Startech have a 4-bay case with additional ports.
4 Bay Thunderbolt 3 NVMe Enclosure - External Drive Enclosures | Hard Drive Accessories | StarTech.com Europe
4 Bay Thunderbolt 3 NVMe Enclosure, For M.2 NVMe SSD Drives, 1x DisplayPort Video and 2x TB3 Downstream Ports, 40Gbps | Europewww.startech.com
OWC have their Thundeblade.
OWC ThunderBlade - The Fastest Production Drive in the Universe
Work faster and smarter. Achieve speeds up to 2949MB/s, storage capacities up to 32TB, fanless chassis, and SoftRAID for advanced RAID control.www.owc.com
Got my pair of Acasis TBU405 + Kingston Fury Renegade 4TB yesterday. I use it with my Mac mini M1 with APFS encrypted formatting. I'm copying my entire external HDD data (~ 2TB) with breaks in order to cool the enclosure/SSD. The max noticed temperature during copying in TG Pro 149°F/65°C. The absolute max noticed temperature at all 160°F/71°C (short-term increase in idle with the following fast decrease).
Yesterday I got the message about improper drive disconnect with the following kernel panic and the immediate Mac reboot. Today I continued tests and got the second improper disconnection with 144°F/62°C with following kernel panic and Mac's reboot. After reboot, I got 5 times SSD disconnections without kernel panics. The SSD is mounted with the default 0.5mm silicon pad. Any thoughts? Did anybody experience similar behavior?
Thank you for your response.1) Those temps are on the higher side. Make sure the thermal pad is actually making contact with the top cover.
2) Do those disconnections only happen during an intense R/W activity? If yes, the enclosure is probably drawing more power (>15w) than TB3 allows.
3) Try a different drive. That drive is rated to draw upto 10.2W for writes and it's probably drawing 1-2W more inside this enclosure.