I've searched all over and I can't find any reference to whether the 4K technology that was removed due to security concerns, from the 12900K, has been fixed and brought back with the 13900K. Does anyone have an answer to this?
Thanks in advance!
No, it doesn't.
For this use case, SGX has been discontinued starting with 11th Gen Intel processors.
10th Gen processors are the last ones that provide SGX support for Ultra HD Blu-ray Disc playback.
In addition, the system must also meet other requirements. The following are suggestions for configuring a PC platform capable of playing Ultra HD Blu-ray Discs:
Those motherboards are the latest to provide the requirements for Ultra HD Blu-ray Disc playback with HDR.
Processor to prefer: Intel Core i5-10400 (G1 stepping)
Hitachi LG BU40N (this drive features a Slimline SATA port and therefore an adapter is needed to connect to one of the above motherboards)
Both need the Ultra HD Blu-ray certified firmware version 1.00. Newer firmware versions don't support playback any longer. Preflashed drives can be found on the internet. Since this firmware is official, there is nothing illegal operating a drive this way. The drive Hitachi LG BH16NS55 can also be flashed with the WH16NS60-firmware.
Software Player: CyberLink PowerDVD 21 Ultra
I can confirm fully functional playback with the ASRock motherboard, BU40N (FW 1.00!) and Windows 10 22H2 and PowerDVD 21 featuring all available software updates. One should stick to the drivers provided by the motherboard manufacturers. For me, however, the generic Intel UHD630 graphics driver also works:
- 4K 60 Hz YCbCr 4:4:4 8 bpc 594MHz
- 4K 60 Hz YCbCr 4:2:0 12 bpc HDR 445MHz
- 4K 60 Hz RGB 8 bpc HDR 594MHz („8-bit with Dithering“)
- 4K 30 Hz (or less) YCbCr 4:4:4 12 bpc HDR 445MHz, so chroma subsampling can be omitted when playing a 24p movie, although the source material is usually only available with YCbCr 4:2:0 natively on Ultra HD Blu-ray Discs
Ultra HD Blu-ray playback is also possible using Windows 11.