Question about BUS speed SOC vs Socketed mobo

Ralph_IT

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Apr 12, 2021
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Reading about firewalls and whatnot I've stumble upon this blog: https://calomel.org/network_performance.html, where the author states that CPU clock speed is not as relevant as motherboard's bus speed.
And a question just crossed my mind: Will the connection between the PCIe lanes and the CPU through the Northbridge be faster than the same PCIe lanes and a SOC?
Like, will the data transfer of a network card in a X10SDV mobo be faster than the same card in a 1151v2 socketed mobo?

Thanks in advance.
 

i386

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Mar 18, 2016
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From my understanding the pins/contacts on a cpu are directly connected to the traces in a motherboard/pcb and then these traces are exposed as pcie, memory channels as ram slots etc.
I am not sure where a "speed" difference should come from.
 
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Ralph_IT

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From my understanding the pins/contacts on a cpu are directly connected to the traces in a motherboard/pcb and then these traces are exposed as pcie, memory channels as ram slots etc.
I am not sure where a "speed" difference should come from.
I was confused about the SOC not having a "Northbridge" so called.
If I understood correctly, SOC mobos do not have a "Southbridge" and all is CPU linked. Then the "speed factor" would be the raw power of the CPU. Right?