Overclocking settings for the 3080 Ti LHR card

[true31337]

Tell me what parameters should I choose according to memory and core: 1200 core / 3000 mem or core 1500/3000 mem? Are there any recommendations from the Gminer developers for overclocking? Do I understand correctly that the higher the overclock, the lower the LHR parameter? And vice versa.

[igralec84]

This is what i'm using, but i'm overclocking with MSI Afterburner:

+---+-------+-----------+--------+------+-----+-------------+ | ID GPU Speed Shares Best Power Efficiency | +---+-------+-----------+--------+------+-----+-------------+ | 0 3080Ti 90.24 MH/s 1148/0/0 73.78T 243 W 371.36 KH/W |

+---+-------+------+-----+----+-----+----+------+ | ID GPU Temp Fan Core Mem Kern LHR | +---+-------+------+-----+----+-----+----+------+ | 0 3080Ti 56/94 58 % 1200 10551 N/A 73 % |

[true31337]

The question was a bit different: do LHR cards need a large enough core? Regular 3080 or 3070 non-LHR work quite well at ~ 1065 - 1080 Mhz. Is there a need to upgrade the core to more than 1500 (or even 1605) or you can get by with 1200. I understand that all LHR models are very demanding on the core. The question is what is better to overclock? Core or memory? Or both.

[igralec84]

On ETH, core clock doesn't do anything for hashrate, but i've read having it a bit higher then the lowest you can go, can help with LHR stabilty. But that was at the start of LHR unlocks, maybe the miners improved enough for it not to matter. It seems the choice of drivers matters more than core clocks.

if you're undervolting the core, there's also a point where the card will crash if you want a too high clock from it.

In a way you can balance out higher memory OC and lower LHR, but you don't have that much headroom for overclock, if you lower LHR from 74 to 72, you'll have to increase memory clocks by a few 100mhz, which might not be stable anymore, or help the longetivity of the card.

[dedizones]

i have 2 * 3080TI evga and msi

1185 / 2400 (2000 + 400mhz "P0") and PL 320

--kernel 0
--intensity 100
--lhr  1
--lhr_tune 0
--lhr_autotune 1
--lhr_autotune_step 0.1
--lhr_mode 1

it's possible flash 3080Ti msi, gigabyte and more with bios EVGA 3080Ti

See below GPU ID 1 it's MSI flashed bios EVGA

more information here:

https://www.reddit.com/r/EtherMining/comments/rd731v/msi_rtx_3080_ti_gaming_x_trio_vbios_flashing_with/

https://forums.evga.com/New-Firmware-Boosts-RTX-3080-Ti-Mining-Speed-By-21-Percent-m3503388.aspx

[sjcdcheu]

I have EVGA 3080Ti with oc --cclock 200 --mclock 1600 --pl 78 and retrieve 92Mhs. The thermal pad changed. In fact, I don't care about the pl since it hosted but I monitor the temperature.

[true31337]

For now, I decided to stop at these overclocking settings. Not the highest, but stable and without rejects.

[sjcdcheu]

You don't check your memory junction temperature and maybe your area is cold even though the fan speed is low.

Also, which Nvidia driver using?

[true31337]

You need to flash the BIOS only from the manufacturer of the same brand. For example: Palit GamePro on Palit GameRock. In this case, it is necessary to take into account that they have the same Device ID. It is necessary to select by greater power and release date. It's dangerous and there is no guarantee that Asus bios will work for Gigabyte. Consider this.

[true31337]

The temperature where the cards are located is not higher than 5~10 C.

Therefore, the memory and the core do not heat up. In any other conditions, if the chip temperature is above 55-60 C (mem above 80~90 C), the card will throttling and you can forget about 103 Mhs.

[true31337]

I have autofan turned on to maintain the temperature no higher than 42 C (Target Core Temp)

[dedizones]

For now, I decided to stop at these overclocking settings. Not the highest, but stable and without rejects.

3400mhz memory it's to hight for small performance, i have 2400 and 89/90Mhs ratio watt/mhs is very good

you oc memory juste for 2MHS ? ...

[true31337]

dedizones

LHR are very capricious cards. Each time, in order to find the optimal settings, you have to wait until the miner selects the best values ​​​​and fixes them. For 3400 it is 74.2 (LHR). With ordinary cards, everything is easier. I agree that 3400 is quite a lot, but my card is capable of overclocking up to 3700 Mhz. I do not want to experiment on this rig now. Let it work. I have another rig with two 3080 Ti (LHR) but it's still busy mining TON. In general, I think that the optimal settings should be within 2600/1200 or 2700/1500 according to these data: https://github.com/nicehash/NiceHashQuickMiner/blob/main/optimize/data_008.json I usually follow these settings , and then I adjust to myself. The main overclocking rule is that the frequency must be increased by 30 Mhz, and the result obtained must always be divided by 15 and an integer should be obtained. For example: 2600/15 = 173.3333 this is not suitable, so you need to use 174, i.e. 174 x 15 = 2610 and so on. If overclocking occurs, then it is also necessary to reduce step by step -30 Mhz down.

[cool2hatex]

1100cc and +1520 memory is the best i saw on my colorful. 90-91 Mh

[true31337]

1590 core / 3510 mem = 94.20 Mh/s - The optimal choice.

All values ​​above these give a smaller result (85-88 Mh/s). 1605/3700 gives the worst result.

[true31337]

Well done Huang, good mining LHR protection :=)

[dedizones]

Well done Huang, good mining LHR protection :=)

memory it's very too hight juste for 10|15$ / month

I prefere mining other crypto with ratio watt/perf example with ergo or ton

[true31337]

Profitability on TON has fallen sharply. It was 0.45 / Gh, but it was 0.11 / GH. Accumulated 100 coins in the hold and that's enough. Before POS, I will mining ETH, and after that, other coins.

[igralec84]

Alephium seems interesting, with rising difficulty it's hanging in there in profitability compared to ETH. Currently around 3.3$ per day on a 3080Ti. But it's only on one exchange and it's maybe a bit difficult to sell or withdraw. So in the long run, ETH is still a better choice while it's still PoW.

[cool2hatex]

That settings worked like magic. Now also i get around 94Mh. Thank you everyone.

[true31337]

That settings worked like magic. Now also i get around 94Mh. Thank you everyone.

The main thing is to watch the temperature. If it is higher than 45-50C on the chip, and from memory it will already be 85-95C, then the card will start to slow down.

ps 3060 Ti LHR recently managed to overclock to 50 Mh/s