Hashrate better with single card then with two?

[AshHertz]

I am a complete noob when it comes to mining but thought I would give it a crack as a hobby. With my gaming PC which is fitted with a RTX 2060 Super card. I was getting on avg 35mh/s. so I thought I might as well buy a second card with a riser and see what I get from that. I then removed the 2060S card and fitted a RTX 3060 Ti to my PC - this card on it own produces a hash rate of 50mh/s without any OC and keeping this standard.

So when I eventually connected both, the miner confirms both cards but they both together only produce on avg. 40Mh/s??? doesn't make much sense how the one card alone (rtx 3060 Ti) performs better that both together? Probably left out a lot of technical info that would be required by any assistance will be much appreciated.

[tg88]

I couldn't understand, where are you looking at this average speed information? directly at the miner or in the pool?

I recommend using the afterbuner and optimizing the gpus undervolt and clock settings ...

[adaseb]

I am a complete noob when it comes to mining but thought I would give it a crack as a hobby. With my gaming PC which is fitted with a RTX 2060 Super card. I was getting on avg 35mh/s. so I thought I might as well buy a second card with a riser and see what I get from that. I then removed the 2060S card and fitted a RTX 3060 Ti to my PC - this card on it own produces a hash rate of 50mh/s without any OC and keeping this standard.

So when I eventually connected both, the miner confirms both cards but they both together only produce on avg. 40Mh/s??? doesn't make much sense how the one card alone (rtx 3060 Ti) performs better that both together? Probably left out a lot of technical info that would be required by any assistance will be much appreciated.

If one GPU got 35mh/s and your other one got 50mh/s then your total speed should be 85mh/s with both. Getting 40mh/s is not right. You need to post more info like which program you are using and which operating system.

Are you using a built-in video card for your monitor or is it plugged into the GPUs? If so plug it into the onboard motherboard DVI connector instead and use onboard video. If you are using the display output from the GPU, then it usually slows down whenever you are browsing the web or playing games. Hence your speed will always be slower.

[FP91G]

Are you using a built-in video card for your monitor or is it plugged into the GPUs? If so plug it into the onboard motherboard DVI connector instead and use onboard video. If you are using the display output from the GPU, then it usually slows down whenever you are browsing the web or playing games. Hence your speed will always be slower.

My work computer has a 1060 6GB graphics card. OS Windows 10. It is always in the mining mode.
I work without problems on a computer, watch movies, YouTube and this does not affect the hashrate. Before that, my computer had RTX 2070, and I even played simple games on it without losing the hashrate. Then I put it on the farm.

AshHertz, which PSU are you using?

[Eco_111]

Are you using a built-in video card for your monitor or is it plugged into the GPUs? If so plug it into the onboard motherboard DVI connector instead and use onboard video. If you are using the display output from the GPU, then it usually slows down whenever you are browsing the web or playing games. Hence your speed will always be slower.

My work computer has a 1060 6GB graphics card. OS Windows 10. It is always in the mining mode.
I work without problems on a computer, watch movies, YouTube and this does not affect the hashrate. Before that, my computer had RTX 2070, and I even played simple games on it without losing the hashrate. Then I put it on the farm.

AshHertz, which PSU are you using?

That's impossible, you can't mine and play video game on the PC at the same time, it will surely reduce it's hashrate or even stop mining and hang your system, I don't believe this, I can go with youtube video and browsing but not gaming, even watching YouTube video while mining will slow down your hashrate

[Inkdull]

I need more information OP, what type of miner are you using? What OS is your PC running on? Also try to update your motherboard BIOS and also try different pcie slots too, Is your power supply watts high enough to carry the two graphic cards? Share more details if you want your solution to be solved

[Ryushin]

It's the motherboards fault I believe, try to upgrade your power pack and also make sure you find a update version of BIOS for your motherboard, switch off any available iGPU in your BIOS settings too if available

[safar1980]

That's impossible, you can't mine and play video game on the PC at the same time, it will surely reduce it's hashrate or even stop mining and hang your system, I don't believe this, I can go with youtube video and browsing but not gaming, even watching YouTube video while mining will slow down your hashrate

Try running mining on a video card and the game "Heroes 3". Hashrate will not drop. Of course, if you run games like Call of Duty: Modern Warfare,
you won't be able to mine and play at the same time. Friends miners play on farms in EVE Online. Perhaps FP91G was talking about such games.
The most important thing is to have a powerful processor and 8 GB of RAM. It's bad to play on a 2-core processor.

[Maxstl007]

That's impossible, you can't mine and play video game on the PC at the same time, it will surely reduce it's hashrate or even stop mining and hang your system, I don't believe this, I can go with youtube video and browsing but not gaming, even watching YouTube video while mining will slow down your hashrate

Try running mining on a video card and the game "Heroes 3". Hashrate will not drop. Of course, if you run games like Call of Duty: Modern Warfare,
you won't be able to mine and play at the same time. Friends miners play on farms in EVE Online. Perhaps FP91G was talking about such games.
The most important thing is to have a powerful processor and 8 GB of RAM. It's bad to play on a 2-core processor.

Might be true, who knows? But I've never had any luck trying to run games while mining without hanging and freezing the whole PC, sometimes I might have to reboot the PC, even with low games indie games the PC will still reboots, I'm not saying you are wrong but I have enough CPU power, 8cores

[safar1980]

That's impossible, you can't mine and play video game on the PC at the same time, it will surely reduce it's hashrate or even stop mining and hang your system, I don't believe this, I can go with youtube video and browsing but not gaming, even watching YouTube video while mining will slow down your hashrate

Try running mining on a video card and the game "Heroes 3". Hashrate will not drop. Of course, if you run games like Call of Duty: Modern Warfare,
you won't be able to mine and play at the same time. Friends miners play on farms in EVE Online. Perhaps FP91G was talking about such games.
The most important thing is to have a powerful processor and 8 GB of RAM. It's bad to play on a 2-core processor.

Might be true, who knows? But I've never had any luck trying to run games while mining without hanging and freezing the whole PC, sometimes I might have to reboot the PC, even with low games indie games the PC will still reboots, I'm not saying you are wrong but I have enough CPU power, 8cores

Have you tried to go into the Windows task dispatcher and see which devices are overloaded?
I sometimes play to the world of tank and sometimes forget to turn off mining. When the computer starts freezing, I turn off mining, and the game FPS increases.
But I did not notice PC reboots. Check the RAM with a memtest and change the thermal paste on the video card and processor.

[ekhazaee]

That's impossible, you can't mine and play video game on the PC at the same time, it will surely reduce it's hashrate or even stop mining and hang your system, I don't believe this, I can go with youtube video and browsing but not gaming, even watching YouTube video while mining will slow down your hashrate

Try running mining on a video card and the game "Heroes 3". Hashrate will not drop. Of course, if you run games like Call of Duty: Modern Warfare,
you won't be able to mine and play at the same time. Friends miners play on farms in EVE Online. Perhaps FP91G was talking about such games.
The most important thing is to have a powerful processor and 8 GB of RAM. It's bad to play on a 2-core processor.

Might be true, who knows? But I've never had any luck trying to run games while mining without hanging and freezing the whole PC, sometimes I might have to reboot the PC, even with low games indie games the PC will still reboots, I'm not saying you are wrong but I have enough CPU power, 8cores

Have you tried to go into the Windows task dispatcher and see which devices are overloaded?
I sometimes play to the world of tank and sometimes forget to turn off mining. When the computer starts freezing, I turn off mining, and the game FPS increases.
But I did not notice PC reboots. Check the RAM with a memtest and change the thermal paste on the video card and processor.

if your mainbord have onbord graphic card with descent power and ofcourse with powerful enough PSU and connect your monitor to onbord graphic card , there is no problem to work with pc to the limit of onbord graphic card. i have 5 1060 and one 1050 connect it to pc with riser and separate PSU and my monitor connect to 1050 and i dont have any problem working and even playing games like farcray 5 .