For our manual overclocking tests, we used AMD's built-in tuning tools.
When it comes to overclocking the RX 9060 XT, it really just comes down to how far you can lower the voltage, as that's what will allow for higher clock speeds.
As it turns out, all three 9060 XTs performed about the same when overclocked and undervolted, which isn't a huge surprise. The gains over stock are fairly small, being 7% at best in A Plague Tale: Requiem, but with smaller margins in Cyberpunk 2077 and Starfield.
Power draw also rose for all three GPUs when overclocked, both the Steel Legend and Nitro+ drew over 205W, while the Hellhound was closer to 195W.