Sky, do you have any idea why my power balance is like this?
I did some calculations, versus my Timespy scores I got on a STOCK card at 440W (114%), (pure stock, unopened, no changes in thermal pads/paste/shunts) with +100/+600, and I determined that to get the exact same scores (currently, post all mods and re-pads, repastes, etc), I need a 69% power target. Then, I took the GPU Board Power value shown in GPU-Z and in order to get 400W from the 69% run (which gave the same scores, about 21,015 Graphics score in Timespy), I need a
1.65x multiplier! 1.65x multiplier with paint? (GPU-Z reporting about 245W total board power for 12,015 graphics TS score). Okay....anyway....
Edit here is proof of that (although I don't have the original pre-mod runs, they are on my 3dmark history).
69% power target, +90 core, +500 memory.
View attachment 2467413
Compare this to my "best" full run TS score before I got the paint (I got the paint on November 4th. this run was on October 25th.
21,022 graphics. +100/+600, 400 watts (114% TDP)
The absolute maximum graphics score I got (custom run, graphics test only) pre-mod was this one: 21082.
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Take alook at this now.
This is my timespy and port royal run from this morning.
Note that I got these same scores (actually slightly better TS) when the mod was first done, back on november 11th, when the 8 pins reported balanced power draw.
Although here i'm at +150/+500, and was then at +150/+600.
View attachment 2467405
View attachment 2467406
So anyway...
My scores are the same, and I did a "Heaven" 1080p run last night and it seems I can reach 535W of power before hitting a "power limit" with the power slider at 114%. However the difference now is that the card apparently isnt "maxed out" and is hitting this "Unthrottled" limit, only if "Normalized" TDP is under 114%, while the total TDP is much lower (not even 100%).
It seems that "total TDP" only reaches 100% when I get close to 570W! But then some heavy throttling starts happening when 8 pin #1 gets to its power limit of 175W in GPU-Z...
View attachment 2467407
Ignore the "throttle" and "Thermal" limit flags --you can see that "blip" on GPU-Z--this seems to be a bug in the latest Vulkan beta drivers. Doesn't happen at all in 456.98 Hotfix.
As far as those limits---here is a "High temp" 4K overwatch run from last night. Very high temps so clearly that power draw is pretty accurate.
View attachment 2467408
You can see the throttle bar not being 'full size'--meaning the throttle warning flag was enabled because a power rail was approaching its limit. I actually saw up to 572W, but by this time chip reached around 80C so I stopped testing.
Anyway---back to the point:
What's going on with the 8 pin #1 and #2 and PCIE Slot readings here?
It's like the board seems to be 'normalizing" (TDP) itself based on close to 15 mOhms stacked (3.75 total shunt resistance=535W at 114% TDP), then showing throttle flags after that is exceeded.
@bmgjet said that the board is drawing heavily from 8 pin #1, because of me using new higher quality thermal pads. However why would it draw SO MUCH from 8 pin #1? That's a pretty huge balance difference.
Note that several days ago, I actually threw on a 5 mOhm shunt on top of the paint on the "Right side" shunt of the two 8 pins (I do NOT know which shunt is for 8 pin #1 or 8 pin #2...
@olrdtg have you done your testing?) and it made NO difference in the power balancing! Then two days ago, when I got my Kryonaut Extreme paste, I threw a 5 mOhm shunt on top of the "other" (left side) 8 pin shunt! And still no difference in power draw balance!
So the power mod is working, the board seems to be drawing proper power, but reporting it in a VERY unbalanced way. And Overwatch being able to pull 570W on air....
Opinions?