Introduction
Display cables only get attention when something does not work: a monitor that refuses 240Hz, a TV that drops to 30Hz, a black screen after a GPU upgrade. Unitek sent over two cables that cover the two most common versions of that problem. The Unitek Ultra High Speed DisplayPort 2.1 Cable (model C1626GY) is for the GPU-to-monitor link when both ends support DisplayPort 2.1 and the monitor runs at refresh rates DisplayPort 1.4 cannot carry uncompressed. The Unitek 8K DisplayPort 1.4 to HDMI Cable (model V1616AGY, 1.8 meters) is for the PC-to-TV link when the source only has DisplayPort and the display only has HDMI.
This is a use-case review rather than a lab test. We describe what each cable is rated for and where it fits in a real desk or living room setup.
Who These Are For
- DisplayPort 2.1 Cable: desktop users on a GeForce RTX 50 series or Radeon RX 9000 series card, or any GPU with DisplayPort 2.1 UHBR outputs, driving a 4K 240Hz, 1440p 360Hz or 8K monitor that also has a DisplayPort 2.1 input. The cable in the monitor box is often DisplayPort 1.4, and that is where refresh rate ceilings and DSC compromises come from.
- DisplayPort 1.4 to HDMI Cable: anyone whose PC or laptop has spare DisplayPort outputs and whose TV, projector or second monitor only has HDMI. That covers a gaming desktop moved to the living room, a work laptop docked to a 4K TV, and a multi-monitor desk where the GPU has run out of HDMI ports.
A display such as the AORUS FO32U24G dual-mode OLED monitor illustrates the high-refresh use case. Match the cable to the actual port specifications at both ends.
Unitek Ultra High Speed DisplayPort 2.1 Cable (C1626GY)
DisplayPort 2.1 at its top UHBR20 rate carries 80Gbps, more than double DisplayPort 1.4’s 32.4Gbps. In practical terms, that is 4K at 240Hz without Display Stream Compression, 8K at 120Hz, or 16K at 60Hz with DSC. Unitek builds the C1626GY with 28 AWG tinned copper conductors and triple shielding, and lists support for dynamic HDR, HDCP 2.2, 7.1 uncompressed audio pass-through, and adaptive sync in its G-Sync, FreeSync and Adaptive-Sync forms. Lengths run 1m, 1.5m, 2m and 3m; passive DisplayPort 2.1 cables get harder to certify past 2m, so the 3m version is the one to check the spec sheet on. Our sample is the 2M version.
| Specification | Unitek Ultra High Speed DisplayPort 2.1 Cable (C1626GY) |
|---|---|
| Standard | DisplayPort 2.1, UHBR20, 80Gbps |
| Maximum modes | 16K (15360 x 8640) at 60Hz with DSC; 8K at 120Hz; 4K at 240Hz / 165Hz / 144Hz / 120Hz; 2K at 360Hz |
| Features | Dynamic HDR, HDCP 2.2, DSC 1.2a, G-Sync / FreeSync / Adaptive-Sync, DP++ |
| Audio | 7.1, 5.1 and 2.0 uncompressed pass-through |
| Construction | 28 AWG tinned copper, triple shielding |
| Lengths | 1m, 1.5m, 2m, 3m |
| Color | Space Grey |
| Price |
Full specifications are on the official Unitek DisplayPort 2.1 Cable product page.
Where it fits: Typical setups where you want to ensure you have full bandwidth to support modern displays, especially ones that push higher resolution at faster refresh rates.
Unitek 8K DisplayPort 1.4 to HDMI Cable, 1.8m (V1616AGY)
This is a passive, uni-directional cable: DisplayPort male on one end, HDMI male on the other, and it only carries signal from a DisplayPort source to an HDMI display. Plugging it the other way, HDMI source to DisplayPort monitor, does nothing. Unitek rates it for 8K at 60Hz and lists HDR, HDCP 2.3, and multi-channel audio pass-through, with aluminum alloy connector housings. The 1.8m length is enough for a desk or a media cabinet and short for a wall-mounted TV, so measure first.
A passive DisplayPort-to-HDMI cable relies on the graphics card’s DisplayPort output speaking HDMI directly through DP++ dual-mode, so the modes you get depend on the source as much as the cable. Most current desktop GPUs and laptop docks support dual-mode at 4K 60Hz; higher modes need the source to support them as well.
| Specification | Unitek 8K DisplayPort 1.4 to HDMI Cable (V1616AGY) |
|---|---|
| Connectors | DisplayPort 1.4 male to HDMI male |
| Direction | Uni-directional, DisplayPort source to HDMI display only |
| Type | Passive (DP++ dual-mode) |
| Rated maximum | 8K at 60Hz |
| Features | HDR, HDCP 2.3, multi-channel audio pass-through |
| Housing | Aluminum alloy connector shells |
| Length | 1.8m |
| Color | Space Grey |
| Price |
Full specifications are on the official Unitek 8K DisplayPort 1.4 to HDMI Cable product page.
Where it fits. The primary use case here are TV’s that don’t have DisplayPort input or already used up. In my case, in the lab we primarily use HDMI2 screens, most of which have 1x DP, and 2x HDMI 2.1. It’s a niche and specialized cable for special cases but if you ever do go up to an 8K TV and want a test output with larger source bandwidth from a GPU, this is a good option for HDMI-only input displays.
Build and Handling
The Unitek Ultra High Speed DisplayPort 2.1 Cable (C1626GY) is very well made with thick braided cables with molded strain relief leading to the connector housing which are very solid. The connectors are still traditional connectors so if you bend them too much they will pop-off so be careful but at least this cable limits the bend that most displays will push on their cable ends. Be warned these are very firm cables and the best way to use them is to let them drape downwards first before curving them to your cable route.
Meanwhile, the Unitek 8K DisplayPort 1.4 to HDMI Cable (V1616AGY) is a bit lighter despite its higher asking price. The bulk of that comes in the converter module housed in th cable end itself and the cable itself is standard shielded cable. Similar to the its DP-to-DP brother, the ends the DP end is molded with a strong strain relief and capped off by a solid housing for the connector.
Take note of the longer HDMI connector end. While it has a lighter cable, there is not strain relief on this end so care must be taken no to be end it too much on this end.
Both cables are lockless for ease of removal and are kept in place by pure friction.
Conclusion
The two Unitek cables are not competing with each other. The DisplayPort 2.1 Cable only matters when the GPU and the monitor both have DisplayPort 2.1 ports and the monitor’s top refresh rate exceeds what DisplayPort 1.4 can carry; for everyone else, a good DisplayPort 1.4 cable is the same experience. The DisplayPort 1.4 to HDMI Cable is a fix for a niche case: a port mismatch. And its value depends on that very specific case and if you’re pushing a display far beyond a standard cable’s rating, you might want to get the best you can and this is one way of offsetting screens that are HDMI 2.1 only but can take advantage of other resolutions and refresh rate that a source console cannot deliver. Definitely something that I find has more value to me in a gaming room setup but it can have its worth in other multimedia uses.
The Unitek DisplayPort 2.1 Cable and 8K DisplayPort 1.4 to HDMI Cable are available directly from Unitek now.
