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40lane CPU but GPU PCIe running only in 16/8/8

kangk81
By kangk81
in CPUs, Motherboards, and Memory
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I have an X99 board with 5960x. Recently I added a 3rd GPU to it cos it was a cheap 2nd hand sale. According to ASUS's manual, all 4 slots should run at 16/16/16/16 but now I'm running at 16/8/8/1.

I have 3 GTX980 in the top 3 slots and an Avermedia capture card in the last slot. I thought everything should run in 16/16/16/1 instead of what is happening currently. Am I doing something worng?

 

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1 minute ago, kangk81 said:

I have an X99 board with 5960x. Recently I added a 3rd GPU to it cos it was a cheap 2nd hand sale. According to ASUS's manual, all 4 slots should run at 16/16/16/16 but now I'm running at 16/8/81.

I have 3 GTX980 in the top 3 slots and an Avermedia capture card in the last slot. I thought everything should run in 16/16/16/1 instead of what is happening currently. Am I doing something worng?

3 x 16lanes would be 48 lanes not including the capture card, the GPU's running in 16/8/8 would be the correct setup. 

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Damn, @W-L beat me to it.

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3 minutes ago, W-L said:

3 x 16lanes would be 48 lanes not including the capture card, the GPU's running in 16/8/8 would be the correct setup. 

 

2 minutes ago, Dawson Wehage said:

Odd question, do all 4 ports have 16 pins in the pci e slot?

Oh wait....... I just re-read the ASUS manual...... 40 lane CPUs run in 16/8/8/8.

 

Sorry for the trouble guys.

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4 minutes ago, ARikozuM said:

Damn, @W-L beat me to it.

I must have mixed it up with the ASUS WS boards i was looking at when I was shopping for a replacement board.

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It literally does not matter, a GPU can't even use 8 lanes of bandwidth.

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2 hours ago, W-L said:

3 x 16lanes would be 48 lanes not including the capture card, the GPU's running in 16/8/8 would be the correct setup. 

So another case of Intel screwing over enthusiasts....

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