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Wanted to share an update here on my 3400g, not using the A300 anymore (now on Asrock B450 fatal1ty itx) but thought it may be useful to some folks here.I have two issues I have been spending a bunch of time trying to figure out. Firstly I am seeing an over-voltage issue (peaking at 1.55v SVI2 TFN) which I have also experienced on two other boards as well - MSI B450I (which I returned) and asrock A300. So I don't think the issue is exclusive to any one mobo. Two things that have seemed to help the over-voltage at stock settings were disabling "SOC/Uncore OC mode" under AMD Overclocking menu, and using the 1usmus power plan with enabling global c-state control and low current idle in bios.For the second issue, basically it seems any time I apply an iGPU oc it bypasses all boost and power saving features on the CPU and just sits at max speed/voltage. Again, I am seeing like 1.55v SVI2 TFN. Nothing I have tried so far (see https://sff.life/how-to-undervolt-ryzen-cpu/) is able to change this behavior. The only thing that works is disabling core performance boost, which I don't really want to do.On the plus side, I have cheap 2x8gb micron e-die running stable at 3533c14 1.45v and 3600c14 1.5v.
Wanted to share an update here on my 3400g, not using the A300 anymore (now on Asrock B450 fatal1ty itx) but thought it may be useful to some folks here.
I have two issues I have been spending a bunch of time trying to figure out. Firstly I am seeing an over-voltage issue (peaking at 1.55v SVI2 TFN) which I have also experienced on two other boards as well - MSI B450I (which I returned) and asrock A300. So I don't think the issue is exclusive to any one mobo. Two things that have seemed to help the over-voltage at stock settings were disabling "SOC/Uncore OC mode" under AMD Overclocking menu, and using the 1usmus power plan with enabling global c-state control and low current idle in bios.
For the second issue, basically it seems any time I apply an iGPU oc it bypasses all boost and power saving features on the CPU and just sits at max speed/voltage. Again, I am seeing like 1.55v SVI2 TFN. Nothing I have tried so far (see https://sff.life/how-to-undervolt-ryzen-cpu/) is able to change this behavior. The only thing that works is disabling core performance boost, which I don't really want to do.
On the plus side, I have cheap 2x8gb micron e-die running stable at 3533c14 1.45v and 3600c14 1.5v.