ProDigit
I don't know much about AMD, but I do know on Nvidia cards, that undervolting or overclocking,is  a main cause of failed Wu's. (On Nvidia GPUs).
Undervolting or overclocking errors, will give the same error in FAH console.
 
I stay away from undervolting, and let the driver deal with the voltage. 
And only use the power slider, to cap the power.
 
This gives 2 advantages:
1- No undervoltage errors
2- Dynamically adjust frequency to the most optimal (without errors).
 
This last one is important, when you're able to get the card's temperature down, as the Nvidia driver can get close to stock boost speeds (within 50-150Mhz), when the card is cold enough (and with an overclock).
 
Doing it this way, I can actually overclock, and power cap;and just focus on tuning my overclock settings. The rest, the driver takes care for.
 
I realize this thread is about AMD and not Nvidia, but perhaps there are some parallels between the brands.

ProDigit
Folding doesn't really benefit from VRAM overclocking. On GTX cards, a +700Mhz overclock results in 10% PPD gain.
On RTX cards, a 1400Mhz overclock (my default overclock) results in about 2-5% speed increase, which is well within the variables between project to project.

ProDigit
I guess you'll have to read behind what's written.
The principle remains the same. memory overclocking does very little to folding points.
The same that's true for Nvidia, should be true for AMD.
Though lower overclock on the RAM, should allow you to increase the OC on the GPU by bits...

ProDigit
The 10% is mostly for GTX GPUs which have much slower memory (7Gbps) than RTX GPUs (which have nearly double the throughput at 15Gbps).

STR1D3R_2
@ bcav, thank you for Your Information on this card. Been putting the funds aside for 2 of these and was about to pull the trigger but had to rush one of our three cats to the vet, and he now needs surgery.