kraade
If you just push the slider tp 118% and run something using the card , it won't just try to pull 450w because it can. Punch up +90 on the clock +1000 on the memory, turn you fans up to 90% and 100 on the voltage slider then open Kombustor and tell me what you get, probably around 432w but you might be happier inside . I think the max on a card I had was about 408 in port royal and 418 on TS extreme, but Kombustor always pulled the most.
Yes it will if it's power limited. If you try to run these 3080 10GB cards at any voltage near the max of 1.1v, or try to maintain something like 2100mhz and run a game like Metro Exodus with RT, the card will be hugely power limited not being able to go above 400w and you'll see frequency/voltage crater to compensate. Even if you have a ridiculous amount of thermal overhead left.
I run at 3440x1440p, so not even 4K, and Metro Exodus with RTing can continually kiss the 400w limit in some scenes. I imagine at 4K it's even more painful.
As far as I'm aware other manufacturers 10GB 3080 cards have no issues drawing up to 450w in games if power is the limiting factor. The EVGA 3080 FTW3 10GB has a design flaw EVGA are obviously staying quiet about as it could result in a mass of RMAs/requests for a recall. So they'll just hide behind the technicality of "spec is what we sell it as" rather than the way a 3 pin graphics card will normally work with a BIOS that has a higher power limit.
The 12GB EVGA card works fine, as does the 3080Ti. So they changed something. I believe there was issues with the original 3090 as well.
I'm watercooled with a lot of radiator space and my card runs at 37~40 degrees up to 400w depending on ambient. I simply cannot get above 400w on a 450w BIOS, card won't draw it due to power balancing issues. It's not drawing enough from the PCIe slot and it's not using power connection 3 to its full capacity. It goes to typical limits on pin 1 pin 2 and then the power delivery system seems to choke and thinks it can't supply anything else from the PCIe slot or pin 3 when it actually can.
EVGA won't answer questions about this so it's left to speculation what exactly has caused this design issue.