Uploaded July 2025 | Updated September 2026, 1 week ago
For Mac computers using Thunderbolt and USB external SSD storage drives, it can be quite tricky to measure the absolute speed of the enclosure, SSD or drive being tested.
*Visit ACASIS geni.us/vnrnWB use promo code DAVID15 for 15% discount*
With a MacBook Pro you can have 1TB, 2TB, 4TB and 8TB internal storage options. Each of these SSD sizes will have different speeds and different amounts of SLC or fast cache. So testing any external SSD on any of these MacBook Pros will result in different speeds and may not truly represent the maximum speed of the external drive being tested. Basically, the MacBook Pro itself will cause some kind of bottleneck.
The same will also be true when using Mac mini and Mac Studio computers, as well as iMac computes, or any Mac due to their different internal storage SSD options.
So the way to get around the Mac itself and its storage becoming a potential bottleneck will be to use a drive faster than the Mac's internal SSD and faster than the enclosure and SSD being tested.
*Stuff shown in this video*
M4 Max MacBook Pro amzn.to/44VArYE
M4 Mac mini amzn.to/46DeX4d
ACASIS TB501 Pro geni.us/ACASIS-9
ACASIS new TB501 Pro (to be released)
ACASIS M4 Mac mini Workstation Enclosure/Dock geni.us/ACASIS-15
8TB WD_BLACK SN850X geni.us/WD-8TB-WithoutHeatsink
4TB WD_BLACK SN850X geni.us/WD-4TB-WithoutHeatsink
4TB Samsung 9100 Pro geni.us/hlaycNO
The iVANKY dock was only shown as part of my workflow and I would not recommend buying this particular model.
*Some of my product recommendation*
If buying from the ACASIS website use my promo code DAVID15 for 15% off anything you buy on the ACASIS website.
Link to the ACASIS website geni.us/ACASIS-27
*ACASIS Website - Thunderbolt SSD Enclosures*
ACASIS TB501 Thunderbolt 5 USB4 V2 80Gbps SSD Enclosure (built-in fan)
geni.us/ACASIS-9
ACASIS TBU405Pro Thunderbolt 4 USB4 40Gbps SSD Enclosure (built-in fan)
geni.us/ACASIS-11
ACASIS TBU401 Thunderbolt 4 USB4 40Gbps SSD Enclosure (silent)
geni.us/ACASIS-12
ACASIS EC-3901 4 bay Thunderbolt 4 USB4 40Gbps SSD RAID Enclosure (built-in fan)
geni.us/ACASIS-14
All ACASIS SSD Enclosures
geni.us/ACASIS-13
*ACASIS Website - Thunderbolt and USB Docks and Hubs*
ACASIS M002Pro (TB1201) Mac Mini M4 workstation 8-in-1 Dual SSD 40Gbps dock
geni.us/ACASIS-15
ACASIS DS9007 21 Ports 40Gbps Docking Station Compatible with Thunderbolt 4
geni.us/ACASIS-16
ACASIS DS-7A15 15-in-1 4K 60Hz USB C Desktop Docking Station for Laptop & PC
geni.us/ACASIS-17
ACASIS DS-0202 14 Ports 4K 60Hz USB C Docking Station with PD 100W Charging
geni.us/ACASIS-18
All ACASIS Thunderbolt and USB Docks and Hubs
geni.us/ACASIS-19
*Buy ACASIS enclosures, docks, hubs and other peripherals at Amazon*
amzn.to/4llG73N
*Western Digital SSDs on Amazon*
*WD_Black SN850X (without the heatsink)*
8TB geni.us/WD-8TB-WithoutHeatsink
4TB geni.us/WD-4TB-WithoutHeatsink
2TB geni.us/WD-2TB-WithoutHeatsink
1TB geni.us/WD-1TB-WithoutHeatsink
*WD_Black SN850X (with heatsink)*
8TB geni.us/WD-8TB-WithHeatsink
4TB geni.us/WD-4TB-WithHeatsink
2TB geni.us/WD-2TB-WithHeatsink
1TB geni.us/WD-1TB-WithHeatsink
Other M.2 NVMe Gen 4 SSDs on Amazon geni.us/Gen4SSDs
*Apple Mac Computers on Amazon*
Apple Amazon Store geni.us/Apple_Amazon_Store
MacBook Pro M4 Series geni.us/OLuacfl
MacBook Air M4 Series geni.us/x5G9
Mac Mini M4 Series geni.us/yJW1
Mac Studio M4 Series geni.us/V2lDm
Mac Studio M3 Series geni.us/7zws
iMac M4 Series geni.us/1k4pwp
*AMAZON ASSOCIATE DISCLOSURE*
I am an Amazon Associate. My Amazon links are Amazon affiliate links. I earn money from qualifying purchases when you use my Amazon affiliate links. *Thank you for using my Amazon links 👍*
*OTHER EARNINGS AND COMMISSIONS*
I also earn money from other product links within my video description. *Thank you for using any of my product links 👍*
You can also send me a coffee paypal.me/DavidHarry
*My Amazon pages with videos and product links*
Amazon USA amazon.com/shop/davidharry
Amazon UK amazon.co.uk/shop/davidharry
*My Global Amazon Affiliate links*
Using my Global Amazon Affiliate links when you buy anything from Amazon does not cost you any extra. However, the money that I earn helps me and my YouTube channel. *Thank you for using my Global Amazon links 👍*
Amazon USA: geni.us/Amazon-USA
Amazon UK: geni.us/Amazon-UK
Amazon Deutschland: geni.us/Amazon-Deutschland
Amazon Canada: geni.us/Amazon-Canada
Contact for product reviews: YouTube@DavidHarry.com
DavidHarry.com
I’m David Harry. Thank you very much for watching this video, take care and goodbye now.
Cheers,
Dave.
For Mac computers using Thunderbolt and USB external SSD storage drives, it can be quite tricky to measure the absolute speed of the enclosure, SSD or drive being tested.
*Visit ACASIS geni.us/vnrnWB use promo code DAVID15 for 15% discount*
With a MacBook Pro you can have 1TB, 2TB, 4TB and 8TB internal storage options. Each of these SSD sizes will have different speeds and different amounts of SLC or fast cache. So testing any external SSD on any of these MacBook Pros will result in different speeds and may not truly represent the maximum speed of the external drive being tested. Basically, the MacBook Pro itself will cause some kind of bottleneck.
The same will also be true when using Mac mini and Mac Studio computers, as well as iMac computes, or any Mac due to their different internal storage SSD options.
So the way to get around the Mac itself and its storage becoming a potential bottleneck will be to use a drive faster than the Mac's internal SSD and faster than the enclosure and SSD being tested.
*Stuff shown in this video*
M4 Max MacBook Pro amzn.to/44VArYE
M4 Mac mini amzn.to/46DeX4d
ACASIS TB501 Pro geni.us/ACASIS-9
ACASIS new TB501 Pro (to be released)
ACASIS M4 Mac mini Workstation Enclosure/Dock geni.us/ACASIS-15
8TB WD_BLACK SN850X geni.us/WD-8TB-WithoutHeatsink
4TB WD_BLACK SN850X geni.us/WD-4TB-WithoutHeatsink
4TB Samsung 9100 Pro geni.us/hlaycNO
The iVANKY dock was only shown as part of my workflow and I would not recommend buying this particular model.
*Some of my product recommendation*
If buying from the ACASIS website use my promo code DAVID15 for 15% off anything you buy on the ACASIS website.
Link to the ACASIS website geni.us/ACASIS-27
*ACASIS Website - Thunderbolt SSD Enclosures*
ACASIS TB501 Thunderbolt 5 USB4 V2 80Gbps SSD Enclosure (built-in fan)
geni.us/ACASIS-9
ACASIS TBU405Pro Thunderbolt 4 USB4 40Gbps SSD Enclosure (built-in fan)
geni.us/ACASIS-11
ACASIS TBU401 Thunderbolt 4 USB4 40Gbps SSD Enclosure (silent)
geni.us/ACASIS-12
ACASIS EC-3901 4 bay Thunderbolt 4 USB4 40Gbps SSD RAID Enclosure (built-in fan)
geni.us/ACASIS-14
All ACASIS SSD Enclosures
geni.us/ACASIS-13
*ACASIS Website - Thunderbolt and USB Docks and Hubs*
ACASIS M002Pro (TB1201) Mac Mini M4 workstation 8-in-1 Dual SSD 40Gbps dock
geni.us/ACASIS-15
ACASIS DS9007 21 Ports 40Gbps Docking Station Compatible with Thunderbolt 4
geni.us/ACASIS-16
ACASIS DS-7A15 15-in-1 4K 60Hz USB C Desktop Docking Station for Laptop & PC
geni.us/ACASIS-17
ACASIS DS-0202 14 Ports 4K 60Hz USB C Docking Station with PD 100W Charging
geni.us/ACASIS-18
All ACASIS Thunderbolt and USB Docks and Hubs
geni.us/ACASIS-19
*Buy ACASIS enclosures, docks, hubs and other peripherals at Amazon*
amzn.to/4llG73N
*Western Digital SSDs on Amazon*
*WD_Black SN850X (without the heatsink)*
8TB geni.us/WD-8TB-WithoutHeatsink
4TB geni.us/WD-4TB-WithoutHeatsink
2TB geni.us/WD-2TB-WithoutHeatsink
1TB geni.us/WD-1TB-WithoutHeatsink
*WD_Black SN850X (with heatsink)*
8TB geni.us/WD-8TB-WithHeatsink
4TB geni.us/WD-4TB-WithHeatsink
2TB geni.us/WD-2TB-WithHeatsink
1TB geni.us/WD-1TB-WithHeatsink
Other M.2 NVMe Gen 4 SSDs on Amazon geni.us/Gen4SSDs
*Apple Mac Computers on Amazon*
Apple Amazon Store geni.us/Apple_Amazon_Store
MacBook Pro M4 Series geni.us/OLuacfl
MacBook Air M4 Series geni.us/x5G9
Mac Mini M4 Series geni.us/yJW1
Mac Studio M4 Series geni.us/V2lDm
Mac Studio M3 Series geni.us/7zws
iMac M4 Series geni.us/1k4pwp
*AMAZON ASSOCIATE DISCLOSURE*
I am an Amazon Associate. My Amazon links are Amazon affiliate links. I earn money from qualifying purchases when you use my Amazon affiliate links. *Thank you for using my Amazon links 👍*
*OTHER EARNINGS AND COMMISSIONS*
I also earn money from other product links within my video description. *Thank you for using any of my product links 👍*
You can also send me a coffee paypal.me/DavidHarry
*My Amazon pages with videos and product links*
Amazon USA amazon.com/shop/davidharry
Amazon UK amazon.co.uk/shop/davidharry
*My Global Amazon Affiliate links*
Using my Global Amazon Affiliate links when you buy anything from Amazon does not cost you any extra. However, the money that I earn helps me and my YouTube channel. *Thank you for using my Global Amazon links 👍*
Amazon USA: geni.us/Amazon-USA
Amazon UK: geni.us/Amazon-UK
Amazon Deutschland: geni.us/Amazon-Deutschland
Amazon Canada: geni.us/Amazon-Canada
Contact for product reviews: YouTube@DavidHarry.com
DavidHarry.com
I’m David Harry. Thank you very much for watching this video, take care and goodbye now.
Cheers,
Dave.
