2021/02/17 23:20:53
donnie123
It doesn't power balance correctly in OCCT either. Maybe the guy who mentioned it is just lucky and his works as intended but mine and several others can't push more then 98-100W on plug 3 no matter what's the test. 
 
My OCCT has it Slot 50W, Plug #1 135, Plug #2 157W Plug #3 98.6W resulting in 440w max. I've observed however the avg is above 400w, and during the test my card is fluctuation from 405-440 often.. (throttling most likely). There is a theory this was done in the newer rev. cards to help mitigate the issue of cards dying and crashing.
 
To be honest it would be fair if EVGA at least gave out some statement? I know the card is able to push stock limits but many times we get Pwr capped even at 380+W if the damn rail overshoots the 150w mark.. 
2021/02/18 17:14:16
liweichen6
3090 KPE here, could this be the reason that I sometimes see power limit when the card is drawing only ~400W?
 

2021/02/19 06:38:42
Bozhemoy
Hi all,
 
I've used nothing but Radeons in my past 10 builds so this is my first Nvidia card since like 2002 and my first EVGA card ever.  I noticed that I was also experiencing the low power in pin 3 but pin 1 and 2 are also inconsistent.  Figured I'd add my results to this thread (I'm not sure if this difference is detrimental to the card in anyway, it seems to run everything at 1440p just fine at stock).  I've updated the XOC BIOS and had my OC set to +400 mem, +100 clock and 119% power. It seems like I'm capping out at 480W.  Not sure if this is something that's RMA worthy.  Here are my stats/results for Time Spy:

Looks like it won't let me post an image but my PCI-E power maxed out as follows:
 
P1: 149.821
P2: 168.906
P3: 93.283
 
With the above overclock I'm getting a 16065 score in Time Spy with a R5 3600, temps hovering around 68 degrees. GPU score alone is 20679.  Since I'm not too used to Nvidia cards, does this seem par for the course?
2021/02/19 13:35:24
donnie123
I don't think they'll rma it for that. Yours doesn't look that bad. Has anybody tried with different PSU's and see if there's a difference?
2021/02/19 14:17:08
ty_ger07
donnie123
Has anybody tried with different PSU's and see if there's a difference?

Yes, this has been tested using different PSUs, different cables, etcetera.  Also, testing different cards, using the same PSU and same cables shows that cards behave differently; each card has its own behavior.  This is page 3 of this thread.  There are 2 pages before this one.
The power balancing is on the card.  If the card can't power balance effectively, there is nothing external to the card which can change that.
2021/02/19 15:46:28
professordumbdumb
This issue exists on the kpe 3090 as well - however we've managed to overcome the limit by increasing the msvdd with classified tool.  This increases the internal clocks of the cache (as far as I know the higher voltage it runs increases the frequency with an internal v/f curve) which is finally able to feed the rendering pipeline with less latency per clock.  With a low msvdd - the card even at 2200mhz will not post scores consistent with other brands of card, but increasing msvdd by a small amount (have to play with to find the right number for certain external gpu clocks) - results in substantial performance increases - and also solves the power balancing issue.  Pre-msvdd tweaking - the card will run to the limit at 430w.  After msvdd - 540w and massive increase in performance.   I suspect that msvdd is power throttling the card far sooner than the global power limit would suggest.
2021/02/19 16:34:00
donnie123
That would explain why the power throttles sometimes happen at watts below the global power limit. But maybe the higher msvdd is not safe?
2021/02/19 21:12:58
Kylearan
Another issue on the non kingpin bios is the SRC Power limit linked to the 8 pin rail.
While all of the 8 pins have a "global" power limit, which is only one value which is related to TDP (8 pin + PCIE Slot power limit= TDP),
Each 8 pin has a "SRC" rail linked to it, which is usually 150W default, 175W max, and this limits the max 8 pin power draw (the 8 pin power limit doesn't, the SRC power limit for that rail does).
So there are 3 SRC's for three 8 pin cards.
2021/03/13 12:29:45
syu1087
I also have this question but for a 3080, I'm currently using 3 separate pcie cables and undervolted which helped, but will get random black screens from using firefox or just having my computer idle showing the desktop.
 
#1 shows around 65w
#2 shows around 104w
#3 shows around 21w
 
psu is a seasonic priime px-850
 
Thanks

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2021/04/03 17:54:33
rjbarker
Appreciate all the great info here guys (the ones that actually provided some info vs the "kids n trolls"!
My 3080 FTW3 Ultra exact same thing with gimped power from PCI-E #3 plug.
Power is about 1/2 from Plug #3 vs #1 & #2.
 
With XOC 450w bios only can reaxh 395w!
 
btw psu Corsair AX1600i.

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