No worries on info share
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Stock Nano ROM TDC is 200A you've touched 225A (MAX) which would have caused a throttle IMO.
Furmark I never run on a GPU, I did it once on a Hawaii card to just see why people were using it. When I saw that the GPU was never reaching highest DPM state due to drivers detecting it as a "power virus" (IIRC), I've never used it again. I also don't use Kombuster & OCCT.
Depending on LeakageID of GPU, what voltage the GPU is at, clocks it's set to plus depending on VRM temps/loading things like Furmark/Kombuster/OCCT can draw too much power across VRM = damage. This info was posted by The Stilt several times on OCN.
The Stilt is a pro overclocker with exceptional AMD product knowledge and OC experience.
I don't know if Nano has "Power Efficiency" setting in drivers page (Gaming>Global settings), you see even on a Fury or Fury X without setting PE=Off Valley or Heaven will never stick to DPM 7 (highest state ie 1000MHz on Nano). Regardless if I upped PL in software or ROM, this I suspect is down to "PowerTune" tech. I still use Heaven/Valley for stability/artifact testing, how I see it is I wanna see if OC is stable with GPU clock rising up/down
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I use 3DM FS to gauge if PowerLimit is appropriate for OC, 3DM will stick to DPM 7 regardless if PE=On or Off in driver. Some games are also good to use for testing (ie Crysis 3), note I said some, as some games due to "PowerTune" tech will not stick to highest GPU state.
If you double-click on the GPU clock value in HWiNFO you'll see a graph popup, this can be better to use to assess if GPU is sticking to highest state whilst under load.
IMO as you've got Nano under WC you are in good position to exploit GPU with bios mod
. Even though the Nano has 4 phase VRM to GPU (ref PCB Fury/X is 6) you're looking at ~280A (depending on temp, he stated ~125C) available from info given by a member on OCN who viewed a) datasheet info of mosfets b) rating for chokes.
Run the 3DM FS whilst getting monitoring data, do it with driver defaults, stock ROM and no increase in PL, etc via OverDrive or MSI AB, etc. If you get throttling I'm willing to help you with bios mod
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Just to state my experience with bios mod I've been involved with Hawaii bios mod for over a year, had 4 differing Hawaii cards. Been doing Fiji bios mod for 4mths and had 1x Fury Tri-X and 6x Fury X cards.