Overclocking Routerich AX3000 mt7981

Hardware Questions and Recommendations
1

how did you manage to OC ? (hopefully not too off-topic)

2

Compile bl2 for your router with patch

0x4B000000 -> 0x4B -> 75 * 2 = 150 -> 1.5GHz
0x64000000 would be 100 * 2 = 2GHz

https://github.com/gw826943555/openwrt/blob/main/package/boot/arm-trusted-firmware-mediatek/patches/9999-mediatek-mt7981-overclock.patch

Replace resistor for >1.7GHz. Default VCCK 0.87V is enough for 1.5-1.7GHz, but for 2.0-2.1 you should increase VCCK to 1.0-1.1V. For this you will need to find 0.87V voltage regulator and then R611 resistor

stock 0.87V 1.3GHz

default 0.85-0.87V -> 1.5-1.7GHz
0.95V -> 1.9GHz
1.05V -> 2.1GHz
1.20V -> 2.25GHz
1.40V -> 2.4GHz (stable at 50C)
1.40V -> 2.52Ghz (unstable at 50C, stable with Peltier module at 10C)
1.45V -> 2.56Ghz (unstable at 50C, stable with Peltier module at 10C)
1.50V -> unstable board/soc right from the start

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3724×388 18.5 KB

zr-3020 board

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2959×836 125 KB

3
3720×960 34.2 KB

4
4960×1280 248 KB

4 Likes
3

Splitting out the overclocking discussion for this device that began here: