A new version of LHR is possibly out. (MSI RTX 3080 Ti Gaming X Trio, lower hashrate than expected)

[szczesniak-piotr]

Hi everyone, especially @develsoftware.

I bought an RTX 3080 Ti a few days ago. What I noticed quickly was that I could not get it to the hash rate it was supposed to do. The difference is not very big, but it's there. I got to 77-79 mhs and cannot go higher. Other 3080 Ti doing 80+ ez. I contacted some people and it turned out that some of them have the same issue with the card. I tried everything, from drivers, through bios, to OC and different miners, there is no possible way to get this card higher. The power draw is stuck around 220-240W and it just will not go up. I'm bringing this up so everyone knows it is possible we got another version of LHR. I've also read some threads on Reddit from ppl claiming their newly bought LHR cards performed worse than the other ones (also LHR). Have a good one guys.

[evark1]

what brand is your card? what settings are you using? what operating system? and what is your gpu memory junction temperature (use HWINFO64)? I have a gigabyte 3080ti i fought with for months, and finally opened the card up and the thermal pads were incorrectly placed or had none at all. after replacing the thermal pads i can easily hold 84-85 MH/s

i'm currently using --lock_cclock 1500 --mclock 1700 power and fan are auto

it ends up tuning at 241w on its own

I have a gigabyte 3080ti that has micron memory, and im using gelid thermal pads. Before the pads I was only able to get to 63-65 MH/s, and it would constantly go into lock detected because the junction temperature was bouncing off of 110. Now it is 82 degrees.

[szczesniak-piotr]

@evark1 I've got MSI Gaming X Trio. Memory temperature is ~86-88c. I'm currently on Windows. Card settings are not important, I've tried everything from -500 core to +100 core, locking the core from 1150 to 1500, memory anywhere from +600 to +1600, power from 75% to 110%, combinations of these including, different miners as well. Now I'm getting ~79mhs around 240W, power 100, core 0, memory +1300.

[evark1]

memory temperature looks okay, what does the LHR tune set to (mine sets to 3)? I cannot get my 3080ti's to 84-85 MH/s using other miners, but probably could if i could figure out the settings. These LHR cards are tricky. I have a gigabyte and evga, using just the cclock and mclock settings they run identical

what's your driver version? If you use +1700 memory does it crash? Try dropping the power setting and see what it settles at. Just use the arguments in the miner command, don't adjust the settings outside of it

[szczesniak-piotr]

Mine is set to 3 as well, 4 is too much. I tried different drivers as well, every single of them gave me pretty much the same results, some were worse. Right now I'm on the newest one and I'm getting 79mhs, previously I was trying anything from 465 to 472 and it was the same. Do you OC in Afterburner, or only using .bat file? 1700 memory crashes.

[szczesniak-piotr]

I'm suspecting some kind of a lock because my card settles around 210W with your settings (and many other settings I've tried), which is weird. With mine I'm pulling ~240W, but that won't get me to 85mhs.

[evark1]

I'm only using .bat with this card. If the 1700 memory crashes instantly, maybe that card just isn't as overclock friendly. You might still try changing the paste/pads but it might not do anything. Do you know what type of memory chips they are (i.e. samsung/micron/hynix). I didn't set the LHR either it does it on its own. Gminer will start at 4 and then go to 3, then sometimes bump back up to 4

My "lock detected" were direct results of heat, once the heat went down it stopped locking. If you can put it in a cooler environment or throw a fan on it directly to see if it changes anything that would be something else to try. Is the backplate around the memory chips hot to the touch? Whats your fan speed at on auto?

if you give me the .bat settings you're using I can see what it results on my cards

My driver version on both of these is 472.12

This is my gigabyte card (i replaced with noctua nt-h1 paste, gelid ultimate 2mm/3mm pads)

+---+-------+-----------+--------+-----+-------------+ | ID GPU Speed Shares Power Efficiency | +---+-------+-----------+--------+-----+-------------+ | 1 3080Ti 84.41 MH/s 4507/0/0 240 W 351.70 KH/W | +---+-------+-----------+--------+-----+-------------+ +---+-------+------+-----+----+-----+----+ | ID GPU Temp Fan Core Mem LHR | +---+-------+------+-----+----+-----+----+ | 1 3080Ti 60/80 71 % 1500 10951 3 | +---+-------+------+-----+----+-----+----+

And my evga (factory paste/pads). This card actually is more in the 225-227w range without me setting a power limit

+---+-------+-----------+--------+-----+-------------+ | ID GPU Speed Shares Power Efficiency | +---+-------+-----------+--------+-----+-------------+ | 1 3080Ti 85.00 MH/s 3645/0/0 227 W 374.45 KH/W | +---+-------+-----------+--------+-----+-------------+ +---+-------+------+-----+----+-----+----+ | ID GPU Temp Fan Core Mem LHR | +---+-------+------+-----+----+-----+----+ | 1 3080Ti 61/88 54 % 1500 10951 4 | +---+-------+------+-----+----+-----+----+

[szczesniak-piotr]

Memory is from Micron. The fan is set to 80% always.

[evark1]

Does your fan go above 80% if you do not set the value? I tried setting my --fan 80 and bumped memory to 1800 and so far getting this. Although,my fans were natively slower then this without setting the value

Gigabyte +---+-------+-----------+------+-----+-------------+ | ID GPU Speed Shares Power Efficiency | +---+-------+-----------+------+-----+-------------+ | 1 3080Ti 86.93 MH/s 10/0/0 244 W 356.28 KH/W | +---+-------+-----------+------+-----+-------------+ +---+-------+------+-----+----+-----+----+ | ID GPU Temp Fan Core Mem LHR | +---+-------+------+-----+----+-----+----+ | 1 3080Ti 59/88 80 % 1500 11051 4 | +---+-------+------+-----+----+-----+----+

EVGA

+---+-------+-----------+------+-----+-------------+ | ID GPU Speed Shares Power Efficiency | +---+-------+-----------+------+-----+-------------+ | 1 3080Ti 86.35 MH/s 9/0/0 226 W 382.08 KH/W | +---+-------+-----------+------+-----+-------------+ +---+-------+------+-----+----+-----+----+ | ID GPU Temp Fan Core Mem LHR | +---+-------+------+-----+----+-----+----+ | 1 3080Ti 53/86 80 % 1500 11051 3 | +---+-------+------+-----+----+-----+----+

[szczesniak-piotr]

For my card even +1600 is too much on the memory, even with 100% fan.

[szczesniak-piotr]

| 1 3080Ti 84.83 MH/s 2/0/0 228 W 372.07 KH/W |

I get something like this one time, and then it drops to ~79. Just the first hash or two is that good and the next ones are worse, even tho the temp is good and all.

It's like i know it can do well but it just doesn't for some reason. | 1 3080Ti 79.48 MH/s 3/0/0 242 W 328.43 KH/W |

[evark1]

In my opinion, what's happening is the memory temps are above a threshold set in the card and it throttles down. That would explain why you get it on the first two, and then get 79 after.

You could point a fan towards the backplate, or replace and get better pads and you probably would be fine

[evark1]

You are right on the Card settings are not important, because no settings are going to reduce memory temperature to get you above 80 MH/s stable

[szczesniak-piotr]

Yeah, I might have an issue with the thermal pads, I'll try to replace them in some time and see if it helps.

[szczesniak-piotr]

Ok, I'm pretty sure the MSI BIOS is the cause of this. I flashed the card with Rog Strix BIOS and now I'm getting 82.5 mhs, which is a lot closer to the actual performance. I think the MSI BIOS has some kind of wattage limit on the memory perhaps? And the memory temp is another thing, this has its part too in my opinion, now at the beginning, I can see 5-10 hashes for ~85mhs and then it drops and stabilizes around 82,5. I will replace the pads and see that happens.