I think that Tom's Hardware article was a little alarmist. Granted Techspot had to use a pretty high end cooler but it worked out fine.
Previously, I was only able to stabilize the 7900X at 4.6GHz, but with the upgraded cooler I managed 4.7GHz and 4.8 even looked to be possible with a bit more voltage tuning. At 4.7GHz the CPU spiked to 60 degrees as soon as it was placed under load -- much better than the 87 degrees seen before.