3000 series GPU's won't work on pcie x4 3.0

[Shlouski]

I have recently finish building a folding at home machine using these parts:

 

 

The plan was to have 5 cards running in one machine, and it works, but not without a couple of issues.

 

My first issue is caused by a lack of pcie power connectors, all of these cards need them, as do the bifurcated risers I'm using to run 4 of the cards.

 

 

The PSU comes with 4 pcie cables each with 2 8pin pcie connectors, so enough for just 4 of the cards, but I needed at least 4 more pcie 6 pin connector for the risers. I ended up having to use molex to 6 pin pcie adapters, but I didn't have enough cables, if I were to only use molex cables would have pushed the cables over the 132 watts max current that molex is rated for, if cards were to pull 75 watts through the riser slots. This meant I had to also use my 2 sata cables and two sata to molex adapters to spread the draw, sata cables are only rated for 54w 12v so two of the risers are connected using one molex connector and one sata to molex connector to connect to the molex to 6 pin pcie adapter.

 

Now my psu is using all of its cables, but I still need more pcie power connector for the last card, I'm out of sata and molex connectors, and 8 pin pcie cables are only rated for 150w, so I won't be splicing into these. At this point I knew one card had to go, of course I decided to drop the 1080 from the build for a card that didn't need a pcie power connector, but it didn't work out and the 3060ti ended up getting dropped.

 

My main issue:

 

My second more pressing issue is why the 3060ti had to be dropped from the build. None of my 30series cards (3090, 3080, 3070, 3060ti) will work properly in any pcie slot when its running at x4 gen 3.0 speed, this includes the second pcie x4 slot on the motherboard when set to gen 3.0, so the pcie x4 gen 3.0 risers won't work with 30 series cards, I have tried but I don't think it is possible to get them run a gen 4.0 speeds.

 

30 series cards will show up in gpu-z and device manager when installed in a riser, but none of the sensors work and most of the gpu data is missing, they also do not show up in msi afterburner. 10 and 20 series cards function normally in the risers, so this means I'm limited to 20 series cards if I want to upgrade, I haven't any rx 6000 cards to test so I don't know whether or not they work.

 

Can anyone shed some light on this problem, do 30 series cards not support pcie x4 gen 3.0?

 

I understand very few people will be trying to run 30 series cards at x4 gen 3.0, and this is why I can't find any info on my issue, I would really appreciate it if someone would try their 30 series card in the second pcie x4 slot set to gen 3.0, and let me know what happens, thanks.

[Poet129]

1 hour ago, Shlouski said:

I understand very few people will be trying to run 30 series cards at x4 gen 3.0, and this is why I can't find any info on my issue, I would really appreciate it if someone would try their 30 series card in the second pcie x4 slot set to gen 3.0, and let me know what happens, thanks.

Last I knew no nvidia cards accepted anything less than x8 pcie which hasn't changed to my knowledge, however if you are familiar with linux you can use their open source driver (community not nvidia) and this may be gotten around haven't tried it myself but if it is a software limit this may work.

[Shlouski]

1 hour ago, Poet129 said:

Last I knew no nvidia cards accepted anything less than x8 pcie which hasn't changed to my knowledge

 

For mining I was using pcie x1 3.0, all cards worked perfectly, reported correctly in gpuz and worked in msi afterburner.

 

1 hour ago, Poet129 said:

linux

 

Linux is a nice idea but I've not used it in many year, I'm was too lazy for sudo this and sudo that. I might give it a go just for the folding machine, which Linux is the most user friendly?

[Poet129]

8 hours ago, Shlouski said:

 

For mining I was using pcie x1 3.0, all cards worked perfectly, reported correctly in gpuz and worked in msi afterburner.

 

 

Linux is a nice idea but I've not used it in many year, I'm was too lazy for sudo this and sudo that. I might give it a go just for the folding machine, which Linux is the most user friendly?

I use ubuntu but supposedly they steal your data. I would go with a gui version of mint for that.

[vsteel]

13 hours ago, Shlouski said:

 

For mining I was using pcie x1 3.0, all cards worked perfectly, reported correctly in gpuz and worked in msi afterburner.

 

 

Linux is a nice idea but I've not used it in many year, I'm was too lazy for sudo this and sudo that. I might give it a go just for the folding machine, which Linux is the most user friendly?

Kubuntu.  That is my OS of choice.   Most main Linux distros today, the ones geared for the mainstream, you don't need to get into the shell anymore.  Or very rarely. 

 

[B.Kirilov]

@Shlouski Are you sure you are running latest bios and/or setting everything properly?

 

We've tested 3060ti in x4 slot in Gen3 and Gen4 mode and it works perfectly fine. Mainboard is gigabyte x570 UD

Screen when GPU is in slot and set to Gen3

 

 

It also works with bifurcation in our riser when set to Gen3.

[LazyDev]

On 1/2/2021 at 9:09 AM, Shlouski said:

Can anyone shed some light on this problem, do 30 series cards not support pcie x4 gen 3.0?

I have no issues with my 3080.

[Shlouski]

23 hours ago, B.Kirilov said:

Are you sure you are running latest bios and/or setting everything properly?

 

Yes, I'm on the latest bios and it's set to 4 4x bification, do you know of any other setting that should be altered?

 

Currently waiting for the machine to finish it's wu's, then I will try the 3060ti again.

 

I couldn't get the 3060ti to work then it was plugged straight into the second slot when its set to gen3, so I wasn't surprised when the risers didn't work either.

[Shlouski]

9 minutes ago, LazyDev said:

I have no issues with my 3080.

But it says you are on gen4 x4, I can get gen4 working, but not gen3.

[B.Kirilov]

No other settings than gen3. Are you trying just that card, or in combination with others?

[Shlouski]

9 minutes ago, B.Kirilov said:

No other settings than gen3. Are you trying just that card, or in combination with others?

 

I tried it on it's own and running the display off it, using both the board and the riser, Windows didn't recognise it, also tried the 3070, same problem.

 

When I tried it in combination with the 10 and 20 series cards, they worked perfectly, but the 30 series cards wouldn't report correctly.

 

Last wu should be finished within the hour, so I will screenshot my issue.

 

Thanks for the help.

 

[Gorgon]

On 1/2/2021 at 5:22 AM, Poet129 said:

Last I knew no nvidia cards accepted anything less than x8 pcie which hasn't changed to my knowledge, however if you are familiar with linux you can use their open source driver (community not nvidia) and this may be gotten around haven't tried it myself but if it is a software limit this may work.

Wrong, wrong, wrong.

 

1. Nvidia 1000 and 2000 series cards will all work down to PCIe3 x1 as millions of miners will attest to.

 

2. You can’t run F@H on the open source Nvidia drivers. You have to use the blobs.

[Gorgon]

On 1/6/2021 at 2:41 AM, Shlouski said:

 

I tried it on it's own and running the display off it, using both the board and the riser, Windows didn't recognise it, also tried the 3070, same problem.

 

When I tried it in combination with the 10 and 20 series cards, they worked perfectly, but the 30 series cards wouldn't report correctly.

 

Last wu should be finished within the hour, so I will screenshot my issue.

 

Thanks for the help.

 

Try reverting the BIOS to another version and/or a less current NVidia driver. I haven’t taken the plunge yet on the 3000 series yet as I’m waiting for some better data on their efficiency as the numbers I’ve seen so far aren’t all that impressive.

[Shlouski]

13 hours ago, Gorgon said:

Try reverting the BIOS to another version and/or a less current NVidia driver

I will give this a go thanks.

 

13 hours ago, Gorgon said:

I haven’t taken the plunge yet on the 3000 series yet as I’m waiting for some better data on their efficiency as the numbers I’ve seen so far aren’t all that impressive.

For me they look ok, stock setting my 3070 performs around the same as my 2080s, but uses 50+ watts less. Stock my 3080 scores around 2 million points more than my 2080s while using around 80 watts more. My 3060ti looks to getting around 2.5mil ppd, but i havent measured its wattage yet. Power measured using a clamp meter on the pcie power cables.