The warranty violating part of all of these would be you're technically driving the power delivery system beyond what the spec strictly requires. For PBO that'd be your exceeding the spec that AM4 requires from motherboards, which could put you of spec for a motherboard's VRM solution. I don't know if there's a handshake there between the CPU & BIOS to ensure PBO doesn't exceed a given motherboard's specs, though. If there is it'd be hard to claim this would be an actual warranty-violating usage.
Rage mode almost certainly respects the vbios limits, so you'll likely see lower-margin cards have basically no improvement from Rage mode, depending on how much they skimped on the power delivery. You'll likely not see an actual push to void warranties as a result, too.
Although in both cases (PBO & Rage mode) it's going to be almost impossible for a vendor to actually reject a warranty issue unless you tell them you did this. Afaik nobody is doing something like a blown fuse to keep a permanent record of these feature(s) being used or enabled.
The warranty violating part of all of these would be you're technically driving the power delivery system beyond what the spec strictly requires. For PBO that'd be your exceeding the spec that AM4 requires from motherboards, which could put you of spec for a motherboard's VRM solution. I don't know if there's a handshake there between the CPU & BIOS to ensure PBO doesn't exceed a given motherboard's specs, though. If there is it'd be hard to claim this would be an actual warranty-violating usage.
Rage mode almost certainly respects the vbios limits, so you'll likely see lower-margin cards have basically no improvement from Rage mode, depending on how much they skimped on the power delivery. You'll likely not see an actual push to void warranties as a result, too.
Although in both cases (PBO & Rage mode) it's going to be almost impossible for a vendor to actually reject a warranty issue unless you tell them you did this. Afaik nobody is doing something like a blown fuse to keep a permanent record of these feature(s) being used or enabled.