So I have this card. it seems to more or less work fine. but there seems to be some hidden power cap being enforced. I have never observed the card to use more then 300W. it doesnt matter what load I use. 3D benchmarks, CUDA compute tests, etc. so far it seems to throttle right around the 300W mark. increasing clocks doesn't help. I ran Heaven 4.0 on loop at 4K with all the settings set to max. looks great, runs fine, but clocks are staying around ~1800-1850MHz and the card never pulls more than 300W, I even cranked the clocks to +150/+1000 and no change, and more commonly around 290-295W. In an O11D with dual 360mm rads, highest temp reported was about 48C. from reviews of other 3080ti models, these cards should be pulling up to the full power limit in these kinds of tests.
 
I've tried tests under both Linux and Windows, with the same results. nothing seems to get the power limit over 300W. this is making me suspect that there is some hidden power cap that's not allowing the card to pull the full 350W and leaving performance on the table. This card allows up to 366W power limit, but increasing it to that still doesn't change anything.
 
Is anyone else experiencing anything similar? Any suggestions on what I might try?
 
Used the 471.11 drivers on Windows
Used the 460.84 drivers on Linux
X570 w/ 5950X @ 4.45GHz

that sucks to hear. I got 6:00:19 in that gpu queue so maybe if I end up getting one in a few weeks I could look and see if it has the same problem.

It's hitting an internal limit you can't see in the monitoring tools. Try Kombustor. The FTW3 doesn't get much higher than 400w (out of 450w) in a lot of games. But it does get close to 450w in Kombustor. Not that it really helps for gaming obviously.

running Kombustor, clocks ~1650MHz, power came up to about 305-315W
 

I’ve never seen the individual plugs over about 125W

Trade you my RTX 3080 Ti FTW3 card for it.

neteng101

gsrcrxsi
PCIe slot power: ~66W

The slot power is where you're hitting the power limit.  I don't know how the hybrid card has its power routed but maybe the pump head and fans are all powered by the PCIe slot power rail and that might be causing it to hit the power limit first.  There's hidden limits in the bios - each power connection has its own limit in addition to the total PL.

This is a Hydro Copper card, no pump or fans on the card.

That is odd that PX1 and GPUZ read differently.  I just tried that on mine, both read the same.  I'm not surprised some other stress tests like Furmark read lower.  I've seen that on my FTW3.  It'll max out early on pin #2 at 160w and stop at 400w or even a little less.  I think it has to do with what part of the card/core is being used the most and it varies from one 3D app to another.
 
Any of 3080ti XC3 bios will work.  Might try flashing one of the others in case they just have something borked in the HC version.
 

talon951
That is odd that PX1 and GPUZ read differently.  I just tried that on mine, both read the same.  I'm not surprised some other stress tests like Furmark read lower.  I've seen that on my FTW3.  It'll max out early on pin #2 at 160w and stop at 400w or even a little less.  I think it has to do with what part of the card/core is being used the most and it varies from one 3D app to another.
 
Any of 3080ti XC3 bios will work.  Might try flashing one of the others in case they just have something borked in the HC version.
 

what card do you have? 3080? 3090? 3080ti?

talon951

gsrcrxsi

talon951
That is odd that PX1 and GPUZ read differently.  I just tried that on mine, both read the same.  I'm not surprised some other stress tests like Furmark read lower.  I've seen that on my FTW3.  It'll max out early on pin #2 at 160w and stop at 400w or even a little less.  I think it has to do with what part of the card/core is being used the most and it varies from one 3D app to another.
 
Any of 3080ti XC3 bios will work.  Might try flashing one of the others in case they just have something borked in the HC version.
 

what card do you have? 3080? 3090? 3080ti?

I have a 3080ti FTW3 that is now converted to a hybrid.

Once you converted from air cooled to an AIO that voided your warranty right?

kram36

Hot_Chez

talon951

gsrcrxsi

talon951
That is odd that PX1 and GPUZ read differently.  I just tried that on mine, both read the same.  I'm not surprised some other stress tests like Furmark read lower.  I've seen that on my FTW3.  It'll max out early on pin #2 at 160w and stop at 400w or even a little less.  I think it has to do with what part of the card/core is being used the most and it varies from one 3D app to another.

Any of 3080ti XC3 bios will work.  Might try flashing one of the others in case they just have something borked in the HC version.

what card do you have? 3080? 3090? 3080ti?

I have a 3080ti FTW3 that is now converted to a hybrid.

Once you converted from air cooled to an AIO that voided your warranty right?

Nope, not with EVGA.

Ok then my next question is why? Because I looked over the warranty and it says it gets voided if you alter a card after factory production. Would taking an air block off for an AIO not be considered to be altering the factory product?

Hot_Chez

kram36

Hot_Chez

talon951

gsrcrxsi

talon951
That is odd that PX1 and GPUZ read differently.  I just tried that on mine, both read the same.  I'm not surprised some other stress tests like Furmark read lower.  I've seen that on my FTW3.  It'll max out early on pin #2 at 160w and stop at 400w or even a little less.  I think it has to do with what part of the card/core is being used the most and it varies from one 3D app to another.

Any of 3080ti XC3 bios will work.  Might try flashing one of the others in case they just have something borked in the HC version.

what card do you have? 3080? 3090? 3080ti?

I have a 3080ti FTW3 that is now converted to a hybrid.

Once you converted from air cooled to an AIO that voided your warranty right?

Nope, not with EVGA.

Ok then my next question is why? Because I looked over the warranty and it says it gets voided if you alter a card after factory production. Would taking an air block off for an AIO not be considered to be altering the factory product?

Altering the card at a hardware level, so if you solder a shunt mod on is an example of what is altering the card. 
 
Repasting or installing a Hybrid kit (from EVGA themselves I may add) isn't considered this type of altering. 
 
If the PCB is left along and stock, you can cool it how you want is my understanding. 

Hot_Chez

kram36

Hot_Chez

talon951

gsrcrxsi

talon951
That is odd that PX1 and GPUZ read differently.  I just tried that on mine, both read the same.  I'm not surprised some other stress tests like Furmark read lower.  I've seen that on my FTW3.  It'll max out early on pin #2 at 160w and stop at 400w or even a little less.  I think it has to do with what part of the card/core is being used the most and it varies from one 3D app to another.

Any of 3080ti XC3 bios will work.  Might try flashing one of the others in case they just have something borked in the HC version.

what card do you have? 3080? 3090? 3080ti?

I have a 3080ti FTW3 that is now converted to a hybrid.

Once you converted from air cooled to an AIO that voided your warranty right?

Nope, not with EVGA.

Ok then my next question is why? Because I looked over the warranty and it says it gets voided if you alter a card after factory production. Would taking an air block off for an AIO not be considered to be altering the factory product?

It's not considered altering the factory production. Doing shunt mods and stuff like that is altering the factory production. You do know EVGA sells a Hybrid kit for people to put on their card and some times will have Hydro Copper blocks? The only thing is you must return the card in factory condition for an RMA, so don't put a Hybrid kit or water block on your card and sell the air cooler.

gsrcrxsi
Now that we've put that off topic tangent behind us. back on topic.
 

gsrcrxsi
I think we're on to something with the PCIe power.

PCIe slot "spec" is 75W TOTAL. but if you ignore power allocated to 3.3V, you are only allotted 66W for 12V power via the slot.

another thing is that if I have the card just sitting there running nothing, but in high performance mode with clocks sitting at 1725MHz, GPUz reports a total board power of about 100W, with 32.5W being pulled from the PCIe slot. GPUz reports that the power consumption is 28.8% TDP, but PX1 reports 49% power consumption.

32.5/66 = 49%.

so it seems that the whole card's power limit logic is only based on the pcie power input? they should only be throttling the PCIe slot and not throttling the whole card.

EVGA should address this discrepancy.

What happens if you try Afterburner? No fans on the card, so you don't need Precision X1 to OC the card and have the fans run correctly.