Is there a higher watt limit BIOS available for reference design RTX 2080 Super cards?

[Bavor]

I have an open loop water cooled EVGA RTX 2080 super(part number 08G-P4-3188-KR). I'm using an EKWB GPU block and have a 360mm and 280 mm radiator to cool my CPU and GPU.

When I tried uploading the BIOS to the database with GPUz, it said its already in the database and that this is the BIOS:

https://www.techpowerup.com/vgabios/213478/213478

Here are the GPU-Z screenshots:

I noticed when overclocking, I'm hitting the power limit quite often and its dropping GPU clock speed when it hits the power limit. It appears that my stock power limit is 292.0 watts. I'm pretty sure the EVGA RTX 2080 Super FTW3 BIOS won't work on the reference design PCB cards. Is it possible to get the power limit raised another 30-50 watts? Is there another reference PCB BIOS with a higher watt limit?

 

[Regeneration]

Check out this thread for crossflashing guidelines.

FTW3 Ultra has higher power limits but your card doesn't have dual 8-pin PCIe power inputs.

 

[Bavor]

Someone on another forum sent me a modified RTX 2080 Super FTW3 BIOS for the reference PCB RTX 2080 Super EVGA cards that has a higher power limit. It works, but now I seem to be limited by the voltage limit on the GPU. Unfortunately, Nvidia won't allow that to be increased easily.

 

[Regeneration]

You're limited by the physical power design:

150w from 8-pin
75w from 6-pin
25w from the motherboard

Dual 8-pin cards get 300w directly from the PSU.

 

[Deleted member 67555]

Monitor your max speeds and max temps in a benchmark then turn your fans up to 90% run again.
I range from 260w to 287w just from ambient temps
I'm not sure if it's a hard lock but I can't get 1mhz past 2100mhz

 

[Bavor]

With a single card and can get them stable at 2130 MHz in many benchmarks. In NVLink, they struggle to maintain 2100 at 45C in some benchmarks, even with the raised power limits.

 

[Vya Domus]

I'm not sure if it's a hard lock but I can't get 1mhz past 2100mhz

Probably it's because of the temperature.

 

[Bavor]

The modified FTW3 BIOS has allowed my benchmark scores to increase. The cards stay at 2100 MHz longer than they use to. EVGA Precision X is showing the cards being limited by the power limit less frequently.

You're limited by the physical power design:

150w from 8-pin
75w from 6-pin
25w from the motherboard

Dual 8-pin cards get 300w directly from the PSU.

I'm pretty sure the 6 and 8 pin cable connections can draw more than what they are rated for. I've seen some 3x8 power connector pin cards with LN2 cooling that were drawing about 600 watts through the 3x8 pin connections.

The power draw from the wall on my system after the FTW3 BIOS was flashed to the cards went up by more than 60 watts If I was limited by the connectors to 300 watts, then my power drawn shouldn't go up more than 16-20 watts over the stock BIOS.

 

[R-T-B]

I'm pretty sure the 6 and 8 pin cable connections can draw more than what they are rated for.

Yes. The 6 pins in particular are severely underrated, but even the 8 pins can push well over their rating.

 

[Caring1]

Yes. The 6 pins in particular are severely underrated, but even the 8 pins can push well over their rating.

Magic (smoke) happens.
Drawing too much current through the 6 pin might burn it out.

 

[R-T-B]

Magic (smoke) happens.
Drawing too much current through the 6 pin might burn it out.

No, it doesn't.

In the maxwell era I literally drew 2x the rated wattage through the 6 pin on my modded Titan X.

Yes, it worked fine. The extra wires are only additional grounds, fyi.

 

[Caring1]

No, it doesn't.

In the maxwell era I literally drew 2x the rated wattage through the 6 pin on my modded Titan X.

Yes, it worked fine. The extra wires are only additional grounds, fyi.

Thanks, I stand corrected.
Although my experience is with Automotive and have seen a number of wires go up in flames.

 

[R-T-B]

Thanks, I stand corrected.
Although my experience is with Automotive and have seen a number of wires go up in flames.

It's usually wise to listen to ratings on wires, so you are good.

This is like a one in a million exception.

 

[Vya Domus]

The concern about those 6 pin connectors was that some old low wattage PSUs came with one just one 6 pin and if you try and run more current through them it might overload the PSU.

 

[Regeneration]

20w overload for 6-pin PCIe shouldn't be a problem for a proper PSU. But more than that could be a problem. Flames show up at 100w+ overload.

Back to the original topic, it is programmed in the BIOS how much watt to draw (min/max) and from which source. The limits by default are 75w from 6-pin PCIe, 150w from 8-pin PCIe, and some more from the motherboard (support up to 75w but usually left unused).

 

[R-T-B]

Back to the original topic, it is programmed in the BIOS how much watt to draw (min/max) and from which source. The limits by default are 75w from 6-pin PCIe, 150w from 8-pin PCIe, and some more from the motherboard (support up to 75w but usually left unused).

Yes, but I was assuming we were talking a modbios. I dunno, haven't messed with that since Maxwell, and you could indeed raise those limits then.

 

[Bavor]

20w overload for 6-pin PCIe shouldn't be a problem for a proper PSU. But more than that could be a problem. Flames show up at 100w+ overload.

Back to the original topic, it is programmed in the BIOS how much watt to draw (min/max) and from which source. The limits by default are 75w from 6-pin PCIe, 150w from 8-pin PCIe, and some more from the motherboard (support up to 75w but usually left unused).

The FTW3 BIOS modified for the reference PCB RTX 2080 Super EVGA cards raises the power limit to 351 watts. I haven't see any indication that the card will hit the full 351 watts max power draw, but my benchmark scores have significantly increased since installing it and the power draw of the system has gone up.

I'm assuming that it acts like both connectors are 8 pin and allows for about 50 watts through the PCI Express x16 slot.