F5F Stay Refreshed Hardware Desktop PCIe branching for NVLink Supports multiple PCIe lanes in a single NVLink connection.

PCIe branching for NVLink Supports multiple PCIe lanes in a single NVLink connection.

PCIe branching for NVLink Supports multiple PCIe lanes in a single NVLink connection.

Pages (2): 1 2 Next
N
Nirple
Junior Member
17
06-20-2019, 07:48 PM
#1
I assembled my PC without intending to use NVLink, so I bought a motherboard with just one PCIe slot that has eight lanes for NVLink. Now I’m thinking about enabling it and wondering if I could use a riser with two eight-lane slots, connect it to my 4.0 x16 port, install two 2080 supers, and run NVLink. Or would the motherboard be incompatible with any changes? Thanks for the specs: Ryzen 9 3900X, MPS, x570 gaming edge, 32GB DDR4, 3600MHz RAM.
N
Nirple
06-20-2019, 07:48 PM #1

I assembled my PC without intending to use NVLink, so I bought a motherboard with just one PCIe slot that has eight lanes for NVLink. Now I’m thinking about enabling it and wondering if I could use a riser with two eight-lane slots, connect it to my 4.0 x16 port, install two 2080 supers, and run NVLink. Or would the motherboard be incompatible with any changes? Thanks for the specs: Ryzen 9 3900X, MPS, x570 gaming edge, 32GB DDR4, 3600MHz RAM.

W
WH0LEF33D
Member
141
06-28-2019, 06:39 AM
#2
Are you trying to connect a 2080 Ti NVLink? The 2080 Ti uses PCIe 3.0, which means your PCIe 4.0 card will function as PCIe 3.0. Both devices will operate at 8x PCIe 3.0 speeds. It should work without issues, though neither will run extremely fast.
W
WH0LEF33D
06-28-2019, 06:39 AM #2

Are you trying to connect a 2080 Ti NVLink? The 2080 Ti uses PCIe 3.0, which means your PCIe 4.0 card will function as PCIe 3.0. Both devices will operate at 8x PCIe 3.0 speeds. It should work without issues, though neither will run extremely fast.

D
Dxtus
Junior Member
5
06-28-2019, 11:51 AM
#3
Your board doesn't support SLI, which is the intended use case.
D
Dxtus
06-28-2019, 11:51 AM #3

Your board doesn't support SLI, which is the intended use case.

M
Mountain_Man8
Member
182
06-28-2019, 03:50 PM
#4
A creator built a motherboard featuring multiple X16 ports yet failed to implement SLI compatibility. What makes sense?
M
Mountain_Man8
06-28-2019, 03:50 PM #4

A creator built a motherboard featuring multiple X16 ports yet failed to implement SLI compatibility. What makes sense?

T
TacticalxTiger
Junior Member
48
06-28-2019, 08:38 PM
#5
no there is only one x16 slot, i was asking if i could use a riser to split the 16 into two x8s. mostly its a question of if the hardware supports it would the software work or if theres a part of the bios or anything similar that allows nvlink which my board simply doesnt have
T
TacticalxTiger
06-28-2019, 08:38 PM #5

no there is only one x16 slot, i was asking if i could use a riser to split the 16 into two x8s. mostly its a question of if the hardware supports it would the software work or if theres a part of the bios or anything similar that allows nvlink which my board simply doesnt have

T
TheKiddPvP
Junior Member
7
06-29-2019, 12:09 PM
#6
x16 measures the same length, but not every x16 port is designed for x16 signals. Your board includes one x16 and one x8 slot, which is typical for most mainstream boards. There aren’t enough PCIe lanes to connect two x16 slots simultaneously, so they’re limited to x16/x8 configurations. Despite this, the board doesn’t support SLI, meaning you won’t be able to use dual 2080s on this specific motherboard.
T
TheKiddPvP
06-29-2019, 12:09 PM #6

x16 measures the same length, but not every x16 port is designed for x16 signals. Your board includes one x16 and one x8 slot, which is typical for most mainstream boards. There aren’t enough PCIe lanes to connect two x16 slots simultaneously, so they’re limited to x16/x8 configurations. Despite this, the board doesn’t support SLI, meaning you won’t be able to use dual 2080s on this specific motherboard.

_
__PELU__
Member
152
06-30-2019, 11:37 AM
#7
You seem to understand the setup now. I was checking an image of a board featuring two 16-bit slots. However, it looks like the SLI code might not be included if you don't have those slots.
_
__PELU__
06-30-2019, 11:37 AM #7

You seem to understand the setup now. I was checking an image of a board featuring two 16-bit slots. However, it looks like the SLI code might not be included if you don't have those slots.

C
Char1ie_XD
Senior Member
578
06-30-2019, 06:13 PM
#8
They’re still making mistakes. They added two 16-pin slots, there were enough lanes for both at x8, which is what SLI usually did, but they forgot to add the SLI software. That’s the most affordable part.
C
Char1ie_XD
06-30-2019, 06:13 PM #8

They’re still making mistakes. They added two 16-pin slots, there were enough lanes for both at x8, which is what SLI usually did, but they forgot to add the SLI software. That’s the most affordable part.

B
BlockinDaily
Member
69
07-01-2019, 11:08 PM
#9
Hes a bit confused since only 1 of them is wired up x16 and the other x8.. and this this is what it means, when the PCIE x16 is actually the slot name, not just the electrical wiring of the slot. But regardless, this board doesnt support SLI.
B
BlockinDaily
07-01-2019, 11:08 PM #9

Hes a bit confused since only 1 of them is wired up x16 and the other x8.. and this this is what it means, when the PCIE x16 is actually the slot name, not just the electrical wiring of the slot. But regardless, this board doesnt support SLI.

M
Millaken
Member
68
07-05-2019, 01:22 PM
#10
It supports Crossfire but not SLI.
M
Millaken
07-05-2019, 01:22 PM #10

It supports Crossfire but not SLI.

Pages (2): 1 2 Next