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PCIe lanes

PCIe lanes

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Roe56
Member
102
11-30-2023, 03:32 AM
#1
Yes, it can still function properly. The network interface card supports PCIe x8 lanes, so using two lanes from the CPU to the first two lanes of the NIC should work. All eight lanes are not strictly required for basic operation, but having more lanes provides flexibility and performance benefits.
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Roe56
11-30-2023, 03:32 AM #1

Yes, it can still function properly. The network interface card supports PCIe x8 lanes, so using two lanes from the CPU to the first two lanes of the NIC should work. All eight lanes are not strictly required for basic operation, but having more lanes provides flexibility and performance benefits.

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17_Twizzlers
Junior Member
23
11-30-2023, 04:02 AM
#2
It varies. It functions in theory but could face bandwidth constraints. A PCIe 3.0 x2 connection supports up to 2gbit/s.
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17_Twizzlers
11-30-2023, 04:02 AM #2

It varies. It functions in theory but could face bandwidth constraints. A PCIe 3.0 x2 connection supports up to 2gbit/s.

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Dragnoyos
Member
64
12-01-2023, 12:22 AM
#3
Thanks for the feedback! I believe it should function properly even with the bandwidth constraints.
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Dragnoyos
12-01-2023, 12:22 AM #3

Thanks for the feedback! I believe it should function properly even with the bandwidth constraints.

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cal_gamer10
Member
105
12-01-2023, 01:36 PM
#4
It seems the setup varies by hardware. For instance, Nvidia restricts GPU performance below 8x, likely due to their chip design. The NIC might share similar constraints. Curious about building your own CPU and the reasons behind it?
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cal_gamer10
12-01-2023, 01:36 PM #4

It seems the setup varies by hardware. For instance, Nvidia restricts GPU performance below 8x, likely due to their chip design. The NIC might share similar constraints. Curious about building your own CPU and the reasons behind it?

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FlamelVhaseyar
Junior Member
17
12-01-2023, 01:48 PM
#5
I’ll look into it with the NIC maker.
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FlamelVhaseyar
12-01-2023, 01:48 PM #5

I’ll look into it with the NIC maker.

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Killa_Dx
Senior Member
645
12-09-2023, 07:25 AM
#6
You should definitely allocate one of those lanes for additional input operations.
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Killa_Dx
12-09-2023, 07:25 AM #6

You should definitely allocate one of those lanes for additional input operations.

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mayawaya11
Member
116
12-09-2023, 07:52 AM
#7
He already has one USB, Ethernet and GPIOS, I'm using this CPU for a particular task or application so it shouldn't cause any problems!
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mayawaya11
12-09-2023, 07:52 AM #7

He already has one USB, Ethernet and GPIOS, I'm using this CPU for a particular task or application so it shouldn't cause any problems!

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BendoNoel
Member
227
12-14-2023, 11:46 PM
#8
I think you're referring to a speed of 2 GB/s, which equals 16 gigabits per second.
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BendoNoel
12-14-2023, 11:46 PM #8

I think you're referring to a speed of 2 GB/s, which equals 16 gigabits per second.

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DecimalBox
Member
126
12-15-2023, 05:48 AM
#9
NICs often raise questions, particularly with multi-NIC cards. Some devices connect each port individually, assigning its own PCIe lanes, which means missing ports if lanes are limited. Others limit bandwidth through a PCIe bridge. I found it confusing why PCIe switch cards aren’t more widespread. This setup could be valuable for routers or NAS systems, allowing multiple devices to communicate at high speeds while only needing a single gigabit link to the PC. It’s similar to how many routers operate internally. It seems at least some creative manufacturers would integrate this directly into their designs instead of adding multiple Intel NICs.
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DecimalBox
12-15-2023, 05:48 AM #9

NICs often raise questions, particularly with multi-NIC cards. Some devices connect each port individually, assigning its own PCIe lanes, which means missing ports if lanes are limited. Others limit bandwidth through a PCIe bridge. I found it confusing why PCIe switch cards aren’t more widespread. This setup could be valuable for routers or NAS systems, allowing multiple devices to communicate at high speeds while only needing a single gigabit link to the PC. It’s similar to how many routers operate internally. It seems at least some creative manufacturers would integrate this directly into their designs instead of adding multiple Intel NICs.