I did notice when looking at the cable description that it says “up to 4K @ 60Hz” for the resolution capability.
Which cables? I don't think USB-C cables should be limited to 4K 60K.
The Apple Studio Display supports DSC, so a HBR2 link rate (used by 4K 60K DisplayPort displays) is sufficient (if DSC is also supported by the OS, drivers, and GPU).
HDMI 2.0 allows 14.4 Gbps.
HBR2 allows 17.28 Gbps.
With DSC each pixel is on average 12 bits (but this can maybe be changed to between 8 and 16 bpp).
Without DSC, each pixel is between 18 and 30 bits (36 and 48 bpp are also options but they usually aren't used since HDR only requires 30bpp = 10bpc)
chroma sub sampling is also an option to reduce bpp. The minimum is 4:2:0 8bpc = 12bpp. 4:2:2 8bpc = 16bpp. Apple's displays don't support chroma sub sampling.
4K60 uses a pixel clock between 522 and 594 MHz.
5K60 is 936 MHz.
6K60 is 1286 MHz.
594 MHz * 24 bpp = 14.3 Gbps (594MHz is HDMI timing - it's limited to 8bpc RGB when HDMI 2.0 or HBR2 are used - 10bpc requires 4:2:2 or 4:2:0 chroma sub sampling)
522 MHz * 30 bpp = 15.7 Gbps
533 MHz * 30 bpp = 16.0 Gbps
936 MHz * 18 bpp = 16.8 Gbps (macOS doesn't support 6bpc).
936 MHz * 12 bpp = 11.2 Gbps (DSC)
1286 MHz * 12 bpp = 15.4 Gbps (DSC)
So you see that a 6K60 display using DSC can use less bandwidth than a 4K60 diplay that doesn't use DSC.
