Originally posted by caligula
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DisplayPort 2.1b Arriving This Spring With DP80LL Cables
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Originally posted by skeevy420 View Post
What are the important features of DisplayPort 2.1?- DisplayPort 2.1 enables up to 3X increase in video bandwidth performance (max payload of 77.37 Gbps)
- Maximum link rate to up to 20 Gbps/lane and features more efficient 128b/132b channel coding, delivering a maximum payload of 77.37 Gbps
- First standard to support 8K resolution (7680 x 4320) at 60 Hz refresh rate with full-color 4:4:4 resolution, including with 30 bits per pixel (bpp) for HDR-10 support
- Beyond 8K resolutions: Example Configurations:
- Single display resolutionsOne 16K (15360×8460) display 60Hz and 30 bpp 4:4:4 HDR (with DSC)
One 10K (10240×4320) display 60Hz and 24 bpp 4:4:4 (no compression) - Dual display resolutionsTwo 8K (7680×4320) displays @120Hz and 30 bpp 4:4:4 HDR (with DSC)
Two 4K (3840×2160) displays 144Hz and 24 bpp 4:4:4 (no compression) - Triple display resolutionsThree 10K (10240×4320) displays 60Hz and 30 bpp 4:4:4 HDR (with DSC)
Three 4K (3840×2160) displays @90Hz and 30 bpp 4:4:4 HDR (no compression) - When using only two lanes on the USB-C connector via DP Alt Mode to allow for simultaneous SuperSpeed USB data and video, DP 2.0 can enable such configurations as:Three 4K (3840×2160) displays 144Hz and 30 bpp 4:4:4 HDR (with DSC)
Two 4Kx4K (4096×4096) displays (for AR/VR headsets) @120Hz and 30 bpp 4:4:4 HDR (with DSC)
Three QHD (2560×1440) @120Hz and 24 bpp 4:4:4 (no compression)
One 8K (7680×4320) display @30Hz and 30 bpp 4:4:4 HDR (no compression)
- Single display resolutionsOne 16K (15360×8460) display 60Hz and 30 bpp 4:4:4 HDR (with DSC)
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- DisplayPort 2.1 enables up to 3X increase in video bandwidth performance (max payload of 77.37 Gbps)
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Originally posted by dragorth View Post
Anyone know why the example for dual display are two 8K displays, but for triple display it is 10K? Did they get those backwards, or am I expecting maximums and that isn't what they gave us?
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Originally posted by pWe00Iri3e7Z9lHOX2Qx View PostThe new longer cables are active so they'll be a lot more expensive, but any options are still appreciated. USB4 and TB4 cable length limits can be a pain.
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Originally posted by Old Grouch View Post
As far as television is concerned, improving the resolution is less important than improving the frame rate. The limit of the acuity of the human eye has (effectively) been reached: the limit of the human visual system to perceive problems with the display of moving objects (both high-speed linear, and rotational) has not been reached.
To quote: NABAmplify: Your Eyes vs. Frame Rates: What You Can (and Can’t) See
The human visual system does not have a 'frame rate' as such - it does not work like a digital video camera, or a traditional film camera with a 25 fps shutter, but it is sensitive to the discrepancies between projecting an image of moving objects at a certain frame rate and 'smooth' reality. Increasing the display frame rate reduces those discrepencies, but as the example shows, artificially contrived (pathological) situations can be generated that expose the limitations of frame-based displays.
Note that this is not related to the lower limit of about 10 frames per second needed for images to generate perceived 'apparent motion'.
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Originally posted by Alexmitter View Post
While its true that framerate is lacking, its a known fact that higher than 30FPS(yea not quite that but for practical means lets call it that) feels really weird for cinema. So the only market this could really benefit is gaming and maybe regular TV but the benefits are complicated and often not actually there.
https://www.quora.com/Why-does-60fps...in-video-games
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The story so far (before these new revisions):
Code:--- DISPLAYPORT --- Version | DSC | HDCP | USB-C DP Alt-mode & TB Port/Cables 1.1 RBR (5.18) | -- | 1.3 | HBR (8.64) | | | 1.2 HBR2 (17.28) | -- | | TB3 (Alpine Ridge) port, TB3 20Gbps cable 1.3 HBR3 (25.92) | -- | 2.2 | DP8K cable 1.4 | 1.2 | | TB3 (Titan Ridge) port, TB3 40Gbps cable 1.4a | 1.2a | | TB4 port/cable, TB3 40Gbps cable 2.0 UHBR10 (38.69) | | | DP40 cable / DP8K cable UHBR13.5 (52.22) | | | DP54 cable UHBR20 (77.37) | | | DP80 cable 2.1 | | | TB5 port/cable --- HDMI (High Definition Multimedia Interface) --- Version | DSC | 1.0 SD (3.96) | -- | 1.1 | -- | 1.2 | -- | 1.3 HS (8.16) | -- | 1.4 | -- | 2.0 PHS (14.4) | -- | 2.1 UHS (42.0) | 1.2 |
Also, fun fact: DP cables don't have "versions" like HDMI (pre-UHS), they have certifications (e.g., DP8K for HBR3, DP40/DP8k* for UHBR10, DP54 for UHBR13.5 and DP80 for UHBR20). I believe all DP cables (that weren't rated for RBR) are all capable of HBR2 operation. HBR3 and above you'll have to check the displayport website first to make sure the cable was tested and certified to work at a given bitrate (if no logo is shown on the cable / datasheet).
If it ain't on that list, don't buy it.
*DP8K certification also qualifies for UHBR10 support--according to VESA (but I can't find the press article stating this...).Last edited by the-burrito-triangle; 07 January 2025, 03:54 AM.
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For historical context, here's the required DP and HDMI versions for needed for 4k monitor support:
Code:1x 4k 8bpc 60Hz: 12.54 | DP 1.2 (HBR2) | HDMI 2.0 1x 4k 10bpc 60Hz: 15.68 | DP 1.2 (HBR2) or DP 1.4 for HDR | HDMI 2.1 1x 4k 8bpc 120Hz: 25.82 | DP 1.4 (HBR3) | HDMI 2.1 1x 4k 10bpc 120Hz: 32.27 | DP 2.1 (UHBR10) or DP 1.4a with DSC | HDMI 2.1 1x 4k 8bpc 144Hz: 31.35 | DP 2.1 (UHBR10) or DP 1.4a with DSC | HDMI 2.1 1x 4k 10bpc 144Hz: 39.19 | DP 2.1 (UHBR13.5) or DP 1.4a with DSC | HDMI 2.1
Last edited by the-burrito-triangle; 07 January 2025, 04:06 AM.
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