F5F Stay Refreshed Hardware Desktop PCI-E split/PCI-E 4.0 extended range

PCI-E split/PCI-E 4.0 extended range

PCI-E split/PCI-E 4.0 extended range

T
Tibau31
Junior Member
12
04-16-2019, 06:16 AM
#1
I recently watched a video that inspired me to share this. My setup includes a Gigabyte Aorus Elite x570 with a Ryzen 3700x and an RX5700. I'm trying to make the most of the PCI-E port connected to the RX5700, assuming it doesn't require full x16 bandwidth. I'm searching for a bifurcation board offering x8 and two x4 slots. Anyone has recommendations? Does my motherboard support this configuration? Would the 5700 actually need x8 PCI-E 4.0 or could x4 work? If yes, I might use a 4x x4 M.2 expansion with adapters. My existing slots already have M.2 to PCI-E adapters, and I have a 10Gb card in an x4 slot plus an x1 adapter over USB 3.0 (though I'm unsure about using USB for PCI-E signals). I'm considering adding another case if needed, connecting riser cables from my main case to extend the setup. I've heard PCI-E 4.0 needs repeaters every few inches, but I found extensions claiming support up to a foot. Do you have any insights or experience with this? Could I link two repeaters together? Also, could an RX5700 handle PCI-E 3.0 x8 even when set to 3.0?
T
Tibau31
04-16-2019, 06:16 AM #1

I recently watched a video that inspired me to share this. My setup includes a Gigabyte Aorus Elite x570 with a Ryzen 3700x and an RX5700. I'm trying to make the most of the PCI-E port connected to the RX5700, assuming it doesn't require full x16 bandwidth. I'm searching for a bifurcation board offering x8 and two x4 slots. Anyone has recommendations? Does my motherboard support this configuration? Would the 5700 actually need x8 PCI-E 4.0 or could x4 work? If yes, I might use a 4x x4 M.2 expansion with adapters. My existing slots already have M.2 to PCI-E adapters, and I have a 10Gb card in an x4 slot plus an x1 adapter over USB 3.0 (though I'm unsure about using USB for PCI-E signals). I'm considering adding another case if needed, connecting riser cables from my main case to extend the setup. I've heard PCI-E 4.0 needs repeaters every few inches, but I found extensions claiming support up to a foot. Do you have any insights or experience with this? Could I link two repeaters together? Also, could an RX5700 handle PCI-E 3.0 x8 even when set to 3.0?

F
FazeBrothers
Member
66
04-16-2019, 09:34 PM
#2
No changes were made to the PCI-E version, it remains at 3.0. The setting for 8X was not applied. These choices aren't available for you.
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FazeBrothers
04-16-2019, 09:34 PM #2

No changes were made to the PCI-E version, it remains at 3.0. The setting for 8X was not applied. These choices aren't available for you.

X
xShaay
Junior Member
41
04-24-2019, 12:05 PM
#3
I can adjust the BIOS to version 3.0 and configure the top port at 8x+4x+4x branching, but my GPU supports 4.0, which would be more efficient if I run it as an x4 or x8. I’d prefer to maintain 4.0 for better performance.
X
xShaay
04-24-2019, 12:05 PM #3

I can adjust the BIOS to version 3.0 and configure the top port at 8x+4x+4x branching, but my GPU supports 4.0, which would be more efficient if I run it as an x4 or x8. I’d prefer to maintain 4.0 for better performance.

M
Menno1600
Member
142
04-28-2019, 12:40 PM
#4
I intended to check the saturation levels. It might work with version 4.0, but it seems unlikely to reach saturation at 3.0. You probably won’t notice any change.
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Menno1600
04-28-2019, 12:40 PM #4

I intended to check the saturation levels. It might work with version 4.0, but it seems unlikely to reach saturation at 3.0. You probably won’t notice any change.