- Enable VID1: Short R336 (original VMOD)
- Increase DVDD to 1.4V: Cut R46 (0R jumper) and replace with 2.94k
- Increase VDD_PLL to 1.2V: Add 27.4k on top of R212 (27.4k || 10k = 7326R)
For reference, the default VDD_PLL is 0.8 x (R211 + R212) / R212, or 1.092V.
Not getting HW errors at 1000 MHz, but I haven't tested long term because I only got my units yesterday. I'm sure 1100+ could be achieved by increasing DVDD using the above method.
It's currently stable (no HW errors, short term) at 1250 MHz (529 kH/s) at 1821 mV, with R46 being 14.7k.
Here are my R46 values and measured DVDD:
Resistance (R) | Voltage (mV) |
4.32k | 1450 |
5.90k | 1509 |
7.79k | 1581 |
12.1k | 1734 |
14.7k | 1821 |
I think I'll stop there before I damage anything

Edit: here is a microscope shot of the mods
Blue: R336
Green: R46
Purple: R212

If I wanted to run mine at 1150 stable, which resistor values should I use on R46 and R212? I appreciate your picture and the risk you put in finding this mod.