Mac mini (M4, 2024) - Technical Specifications - Apple
M4:
Simultaneously supports up to three external displays:
* Up to three displays: Two displays with up to 6K resolution at 60Hz over Thunderbolt and one display with up to 5K resolution at 60Hz over Thunderbolt or 4K resolution at 60Hz over HDMI
* Up to two displays: One display with up to 5K resolution at 60Hz over Thunderbolt and one display with up to 8K resolution at 60Hz or 4K resolution at 240Hz over Thunderbolt or HDMI
M4 Pro:
Simultaneously supports up to three external displays:
* Up to three displays: Three displays with up to 6K resolution at 60Hz over Thunderbolt or HDMI
* Up to two displays: One display with up to 6K resolution at 60Hz over Thunderbolt and one display with up to 8K resolution at 60Hz or 4K resolution at 240Hz over Thunderbolt or HDMI
MacBook Pro (14-inch, 2021) - Technical Specifications - Apple Support
M1 Pro:
Simultaneously supports up to two external displays:
* Up to two displays: Two displays with up to 6K resolution at 60Hz
6K @ 60 Hz HDR ≈ 51.30 Gbps
4K @ 120 Hz HDR ≈ 41.80 Gbps (81%)
So that should be possible for video bandwidth.