Since yesterday i have the very same configuration (SN850X with Graugear) and I can confirm absolutely all of your measurements (same Benchmarks and Temperatures). I changed from a similar sized no-vent DeLock 40Gbps M.2 enclosure - due that the DeLock was just terrible in terms of Cooling Design - hitting 50degrees outside and inside even my SN850X throttling temperatures (85degrees plus!). It is astonishing how the enclosure products differ from each other. This Graugear Enclosure is with no question a double thumbs-up and recommendation to buy.
Nice review, very professional, especially the part with the IR camera. It should have more views for the quality of your work. Thank you! I am getting similar speeds with Samsung 990 Pro 2GB: 3186MB/s write and 3140MB/s read. A noob question: that is like 25Gbps which for a device specified at 40Gbps is only 62.5% efficiency, which doesn’t seem a lot, but I see people consider that a good speed, why is that?
Thank you for such nice feedback! You just asked a very good question and something that I really missed and failed to address in the video. The 40Gbps specification of the Thunderbolt 4 interface can be a bit misleading because not all of that bandwidth can be used for data transfer. Additionally, the way how an internal controller in the enclosure works with your computer's motherboard and data transfer handshake can influence it as well. For the macbook, there are several things that come into play together and that's why you're seeing slower speeds than what you've expected: for TB4 protocol, approximately 8Gbps is reserved for video, leaving about 32Gbps out of 40Gbps for non-video data. This 32Gbps is split across four lanes of PCIe adapter, which slightly slows down data transfer as well (remember the PCIe adapter is within the enclosure and not on your motherboard where it would be faster) - and btw, Graugear enclosure has PCIe4 adapter inside, but I am not sure if it fully utilizes it, or it works in PCIe3 compatibility mode. PCIe3 would have sufficed IMO. However, on top of that, there is also an encoding that is used during the data transmission, so the actual peak data throughput y would be around your calculated 25Gbps. So, your observed speeds of 3186MB/s write and 3140MB/s read are quite close to the practical maximum that can be expected given the internal controller of the enclosure, the protocol chosen and the way how mac's controller handles it. TLDR: 40Gpbs is the maximum specification of the protocol but in reality it isn't the speed of the "file transfer" that you will observe.
Love mine...the only issue I have with it is the requirement of a special screwdriver/bit to open it up...If you put one drive and keep it here, it's great.
Cheers. Indeed, it is nice and compact. You can get a replacement screws with normal philips heads but yeah - would have been easier to have them by default.
That depends on whether the drive was in use by you on the same system. Say if you're on Windows and the drive is formatted in NTFS, you can just continue using it. For Windows, you can use Disk Management, for MacOS Disk Utility.
The enclosure temp is cool even in a High Performance setting of Samsung 990 Pro 4Tb. But do you know why Samsung Magician would not recognize my SSD connected through the enclosure?
Interesting, so the OS sees the drive (and I assume Disk Utility as well), but Samsung Magician does not? Is it maybe a permission thing (i.e. did SM asked you for a permission to access the drive - latest MacOS versions do that) Glad your temps are cool! 😎
@@TechFi-te3ik no it didnt ask for any permission. SM launch under Admin too. If anyone can guide me would really appreciate it. I contacted Graugear but yet to recieve any reply
Nice video! Thank you! this looks promising. Have you had any issues with it randomly disconnecting from the Mac? I bought a Satechi (that I am now returning) and I am running it with a WD_BLACK 2TB SN850X (WDS200T2X0E) on a MacBook Air - M1, 2020 with Sequoia 15.0.1 is not good as it keeps disconnecting, 🤷♂
Hi there! I never had any issues, neither with GRAUGEAR nor SATECHI. Connected for hours, and not a one disconnect. I'd check the cables and whether you plugged in the drive fully into the ports.
Very thorough review- you have a good eye for detail!
Thank you kindly 🤗🫡
really liked the video and the explanation interestingly, perhaps I should buy it!
Glad you liked it!
Just perfect. To the point and so cleverly detailed. All info we need. 1001 thanks. GG !!!
I'm glad you liked it! Thank you!
Since yesterday i have the very same configuration (SN850X with Graugear) and I can confirm absolutely all of your measurements (same Benchmarks and Temperatures). I changed from a similar sized no-vent DeLock 40Gbps M.2 enclosure - due that the DeLock was just terrible in terms of Cooling Design - hitting 50degrees outside and inside even my SN850X throttling temperatures (85degrees plus!). It is astonishing how the enclosure products differ from each other. This Graugear Enclosure is with no question a double thumbs-up and recommendation to buy.
Thank you for your comment! I agree.
If I chose now between the Graugear and Satechi (that I reviewed earlier), I'd keep Graugear :)
Perfect review
Thanks!
Great review!
Glad you liked it!
Thanks, good review 👏🏻
Thanks for watching!
Nice review, very professional, especially the part with the IR camera. It should have more views for the quality of your work. Thank you!
I am getting similar speeds with Samsung 990 Pro 2GB: 3186MB/s write and 3140MB/s read. A noob question: that is like 25Gbps which for a device specified at 40Gbps is only 62.5% efficiency, which doesn’t seem a lot, but I see people consider that a good speed, why is that?
Thank you for such nice feedback!
You just asked a very good question and something that I really missed and failed to address in the video.
The 40Gbps specification of the Thunderbolt 4 interface can be a bit misleading because not all of that bandwidth can be used for data transfer. Additionally, the way how an internal controller in the enclosure works with your computer's motherboard and data transfer handshake can influence it as well.
For the macbook, there are several things that come into play together and that's why you're seeing slower speeds than what you've expected: for TB4 protocol, approximately 8Gbps is reserved for video, leaving about 32Gbps out of 40Gbps for non-video data. This 32Gbps is split across four lanes of PCIe adapter, which slightly slows down data transfer as well (remember the PCIe adapter is within the enclosure and not on your motherboard where it would be faster) - and btw, Graugear enclosure has PCIe4 adapter inside, but I am not sure if it fully utilizes it, or it works in PCIe3 compatibility mode. PCIe3 would have sufficed IMO.
However, on top of that, there is also an encoding that is used during the data transmission, so the actual peak data throughput y would be around your calculated 25Gbps.
So, your observed speeds of 3186MB/s write and 3140MB/s read are quite close to the practical maximum that can be expected given the internal controller of the enclosure, the protocol chosen and the way how mac's controller handles it.
TLDR: 40Gpbs is the maximum specification of the protocol but in reality it isn't the speed of the "file transfer" that you will observe.
@@TechFi-te3ik thanks a lot for this detailed and clear explanation! ❤️
@@exerhlp Thank you for asking a very good question!
Great review, just ordered one... 🙂👍🏻
Then you! Hope you enjoy it!
Great video. This seems like a great handy device. Having 3Gbps storage on hand is great for photos and videos!
Thank you! Although, did you mean 30Gpbs? :)
Yes haha sorry
Love mine...the only issue I have with it is the requirement of a special screwdriver/bit to open it up...If you put one drive and keep it here, it's great.
Cheers. Indeed, it is nice and compact. You can get a replacement screws with normal philips heads but yeah - would have been easier to have them by default.
@@TechFi-te3ik yes sir. Cheers.
Do I need to reformat the drive after plugging in? What software do you recommend to reformat the drive before using it?
That depends on whether the drive was in use by you on the same system.
Say if you're on Windows and the drive is formatted in NTFS, you can just continue using it.
For Windows, you can use Disk Management, for MacOS Disk Utility.
Interesting!
Very!
Would you recommend this over the Satechi?
Looking back now, id say yes! I like the copper cooling solution 😁
The enclosure temp is cool even in a High Performance setting of Samsung 990 Pro 4Tb. But do you know why Samsung Magician would not recognize my SSD connected through the enclosure?
Interesting, so the OS sees the drive (and I assume Disk Utility as well), but Samsung Magician does not? Is it maybe a permission thing (i.e. did SM asked you for a permission to access the drive - latest MacOS versions do that)
Glad your temps are cool! 😎
@@TechFi-te3ik no it didnt ask for any permission. SM launch under Admin too. If anyone can guide me would really appreciate it. I contacted Graugear but yet to recieve any reply
Worst software I ever put my hands on ! At least on Mac. How can Samsung bring out such an app ? A true shame.
Nice video! Thank you! this looks promising. Have you had any issues with it randomly disconnecting from the Mac?
I bought a Satechi (that I am now returning) and I am running it with a WD_BLACK 2TB SN850X (WDS200T2X0E) on a MacBook Air - M1, 2020 with Sequoia 15.0.1 is not good as it keeps disconnecting, 🤷♂
Hi there! I never had any issues, neither with GRAUGEAR nor SATECHI. Connected for hours, and not a one disconnect.
I'd check the cables and whether you plugged in the drive fully into the ports.