what cpu has the most pcie lanes?

[Bean Cooling]

I am trying to make a rig with two intel xeon e7-8894 v4 CPUs but using them I can only access 64 of the 112 pcie lanes on my motherboard if anyone knows a better alternative please tell me. (has to be lga 2011/2011-3

Edited January 27, 2018 by DGC
I forgot to mention the socket type

[Vegetable]

Well anything from the AMD Epyc line has a metric fuck-ton of PCIe lanes. I don't know in specific but thats the most I know of. 

[Energycore]

AMD EPYC server CPUs have 128 PCIe Gen 3 lanes each, up to 256 on a 2-socket board.

 

http://www.amd.com/en/products/cpu/amd-epyc-7281

 

If you look at your Xeons' product sheet

https://ark.intel.com/products/96900/Intel-Xeon-Processor-E7-8894-v4-60M-Cache-2_40-GHz

 

They have a Max of 32 PCIe Gen 3 lanes each, which is why you can only access 64 lanes on your motherboard. I'm unsure whether there are CPUs in the LGA 2011 socket that have more than 32. Though that makes it weird that your 2xLGA 2011 board supports up to 112 lanes then.

[Bean Cooling]

1 minute ago, Energycore said:

AMD EPYC server CPUs have 128 PCIe Gen 3 lanes each, up to 256 on a 2-socket board.

 

http://www.amd.com/en/products/cpu/amd-epyc-7281

... I forgot to mention that is has to be lag 2011/2011-3

[Energycore]

Just now, DGC said:

... I forgot to mention that is has to be lag 2011/2011-3

I figured so I edited my post ahead of time

 

I'll look for a CPU with higher than 32 lanes in the ARK. You should do the same

[Energycore]

2 minutes ago, DGC said:

... I forgot to mention that is has to be lag 2011/2011-3

Here's the whole of the E7-v4 family.

https://ark.intel.com/products/series/93797/Intel-Xeon-Processor-E7-v4-Family

 

And here's the comparison chart for all of them. Notice the number of PCIe lanes:

 

https://ark.intel.com/compare/96900,93791,93795,93790,93792,93801,93804,93793,93806,93811,93814,93794

 

Spoiler

They're all max 32 lanes. Sorry

[Bean Cooling]

6 minutes ago, Energycore said:

AMD EPYC server CPUs have 128 PCIe Gen 3 lanes each, up to 256 on a 2-socket board.

 

http://www.amd.com/en/products/cpu/amd-epyc-7281

 

If you look at your Xeons' product sheet

https://ark.intel.com/products/96900/Intel-Xeon-Processor-E7-8894-v4-60M-Cache-2_40-GHz

 

They have a Max of 32 PCIe Gen 3 lanes each, which is why you can only access 64 lanes on your motherboard. I'm unsure whether there are CPUs in the LGA 2011 socket that have more than 32. Though that makes it weird that your 2xLGA 2011 board supports up to 112 lanes then.

Here's a link to the board https://www.asus.com/us/Motherboards/Z10PED8_WS/

[Energycore]

4 minutes ago, DGC said:

Here's a link to the board https://www.asus.com/us/Motherboards/Z10PED8_WS/

Looks like the board is compatible with the LGA 2011-3 Xeon E5 v4s which have 40 PCIe lanes. As do the higher-end i7s from the 6850K up.

[Bean Cooling]

7 minutes ago, Energycore said:

Looks like the board is compatible with the LGA 2011-3 Xeon E5 v4s which have 40 PCIe lanes. As do the higher-end i7s from the 6850K up.

for the tasks I am using the rig for I need 48 cores not 44

[LienusLateTips]

2 minutes ago, DGC said:

for the tasks I am using the rig for I need 48 cores not 44

Then you'll have to use the intergrated chipset hub. Most tasks don't actually the full lanes tho

[Energycore]

24 minutes ago, DGC said:

for the tasks I am using the rig for I need 48 cores not 44

Then do as @JDE or go EPYC

[pas008]

wow

may I ask what are you doing with all those lanes?

[-rascal-]

Just to make sure everyone is on the same page, @DGC, LGA-2011 is different from LGA 2011-3; they are NOT interchangeable.

 

The ASUS Z10PE-D8 WS is LGA 2011-3, and supports E5 V4 and V3 Xeon CPUs.

E7 is not on the supported list.

 

Also the board does NOT support 112 PCI-E lanes.

It is NOT 7 x 16.

 

If you look at the specifications:

Quote

4 x PCIe 3.0/2.0 x16 (dual x16 or quad x8) *²
2 x PCIe 3.0/2.0 x16 (dual x16) *²
1 x PCIe 3.0/2.0 x16 (dual x8) *²

That is only a total of maximum of 80.

Which makes sense, as each CPU is 40 lanes, so two CPUs is 80.

 

 

Basically, LGA 2011-3 Xeon will not meet the requirements that you need, and as @JDE and @Energycore mentioned, AMD EPYC might be your calling card.