My air (noctua) cooled 7900X sustains 12 cores at 5200MHz reliably, but it's honestly hard to find that much saturation, most tasks can run better with 8 cores sustaining about 5400, or 4 cores sustaining about 5500.
With better cooling I'd be surprised if I couldn't sustain 5400 on all 12 cores.
With better cooling I'd be surprised if I couldn't sustain 5400 on all 12 cores.