Price (RRP): $499.95
The Belkin Thunderbolt 3 Dock Pro is its latest Intel Titan Ridge powered Thunderbolt 3 and USB-C 3.1 backwards compatible dock.
Unlike all earlier docks, Intel Titan Ridge enables a downstream Thunderbolt 3 port for daisy-chained devices. Oh, and it has 85W PD upstream charging.
A note on Thunderbolt 3 (TB3) and UBS-C 3.1 speeds
The full-duplex (both ways simultaneously) controller in your Mac or Windows device outputs either TB3 (40Gbps but some are only 20Gbps) or USB-C 3.1 Gen 1 (5Gbps) or Gen 2 (10Gbps). BTW – 1Gbps is 125MBps.
All provide downstream power to a maximum total of 5V/3A/15W for connected devices like portable SSDs etc.
Absolutely everything goes up and down that single TB3 ‘pipe’. The pipe segments into
- 8Gbps for dedicated video (DisplayPort and that is why all older TB3 docks have one DP)
- 32Gbps for audio/video/data (the maximum that all attached devices get). To complicate things, it divides this into PCIe Gen 3, 4 x 8Gbps lanes
For example, the higher the monitor resolution, the more bandwidth it takes. [email protected] uses around 8-22Gbps, [email protected] is about 18-22Gbps. Speeds are reliant on refresh rate, colour depth etc.
As the pipe gets congested it may start to compress data, drop frame refresh rates etc. So, no Dock can power everything at maximum speeds. Still, Titan Ridge-based ones are intelligent enough to do things like time-slice resources and distribute data most efficiently over those four PCIe lanes.
Techy types can read more here (it is a PDF so check downloads).
What is Intel Titan Ridge Thunderbolt 3?
Belkin Thunderbolt 3 Dock Pro uses an Intel Titan Ridge JHL 7440 chip. Compared to previous Thunderbolt chips it adds one downstream Thunderbolt 3 port and support for two DisplayPort (DP 1.4) streams as part of the 40Gbps. But that is only part of what it does.
The dedicated DP 1.4 HBR3* port/stream provides up to 25.92Gbps (32.4Gbps with overheads) and can support a single [email protected]/[email protected] display without compression. Or with Display Stream Compression 1.2 (DSC) a [email protected]/[email protected] monitor. By comparison, DP 1.2 (HBR2) is 17.28Gbps (21.6Gbps with overheads).
Before you get excited, remember that you only have the original bandwidth to share.
The only other Titan Ridge dock we have reviewed is the Plugable TBT3-UDC1 here, and it scored 4.9/5. As all Titan Ridge docks perform similarly, you can look forward to this doing the same.
The primary monitor uses the dedicated DisplayPort 1.4 port. The second monitor uses the downstream TB3 port.