eVGA RTX 3080 XC3 Ultra Gaming - does not exceed 60 MH/s

david_ibz · June 28, 2021, 10:32am

Hi rkwjunior,

If what you say is correct … I’m fucked… My number is P/N 10G-P5-3885-KR

Regards,
David.

david_ibz · June 28, 2021, 10:35am

Hi Raz,

Do you know if the evga manufacturer only labels their LHR cards with KL or also KR?

Regards,
David.

rkwjunior · June 28, 2021, 10:42am

Its KL. Im gonna edit my post.

rkwjunior · June 28, 2021, 10:43am

Read the attachment above. LHR is “KL”

Raz · June 28, 2021, 10:47am

By your part number seems like yours is not LHR

david_ibz · July 15, 2021, 5:10pm

Hi Guys,
I have finally had time to disassemble my RTX3080 card, I am sorry for the delay, those with a wife and children will understand me.
I had a pleasant surprise, the chip on my card is a GA102-200-KC-A1 … it is not LHR.

I suspect that it has to be a refrigeration issue, by testing I do not lose anything.
Can someone send me an online store where they sell heatsinks for the RTX3080?

Thanks to all for the help.
Regards.

rkwjunior · July 16, 2021, 5:22pm

Heatsinks? Not sure. Most just put in new thermal pads.
Or you can get the evga hybrid cooling kit, if its an evga xc3 or ftw3 ultra.

david_ibz · July 16, 2021, 5:46pm

Hi rjwjunior,
Thanks for answering, yes, indeed I was referring to thermal pads, I don’t think I will find a better heatsink than the original on the card, only if I put a hydro system.
Does anyone have a trusted online store to buy thermal pads?

Regards.

rkwjunior · July 16, 2021, 5:49pm

I think most get them from Amazon

EKLIN · July 18, 2021, 4:27pm

Hi David_ibz
I have the same problem as you, did you solve it？

gunemy · August 8, 2021, 5:00pm

hı 3885-KB LHR or not LHR

UmMaS · August 9, 2021, 10:17am

If it`s not LHR, than you have to cool it more.
One of my 3080 thortles a lot.
At 40C goes 90, 42C goes to 80, at 45 70mhash etc.

Only way to make it better is to change thermal pads on memory.
Check thickness of them, buy new and change.
Pick those with lower thgermal resistance - like 15w/m2 or so.

JustAGuy · August 12, 2021, 4:11am

KB cards are non-LHR. Only the KL cards are LHR versions

bmminer · August 24, 2021, 8:14am

Since you do not have the LHR version, as others mentioned, the reason you are getting a low hashrate is because of throttling due to the memory overheating. My EVGA 3080 XC3 Ultra throttles if the ambient temperature is too high (windows closed) or if the fan is running slowly. I am running Windows so GPU-Z shows that the memory temp is 110 degrees celsius when the card throttles.

There are several solutions to this issue:

Increase fan speed. Might not help much as the memory may not have good contact with the cooler anyway.
Replace memory thermal pads. This will probably help if the original pads are worn or improperly mounted
Replace thermal pads with copper shims. Have a look at this video for guidance. Big effect and cheaper than buying new thermal pads.
Water cooling. Costly, but very efficient if you get a water block that covers the memory.

system · October 14, 2022, 11:14pm

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