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Let's say you have two computers connected to a switch, which then connects to a full gigabit Internet connection. Both computers can use the full gigabit Internet connection speed, as long as the other one isn't also trying to get out to the Internet at the same time. If they do, they'll see their Internet connection speeds slow down until they're more or less balanced, then when one finishes the other will have the full gigabit connection to itself again.

I sold my soul for ProSupport.

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Exactly what others said, but to add a little more detail…

 

Gigabit switches can move data at gigabit on every single port simultaneously. If you had a 2 gigabit internet service, two PC’s would be able to do full gigabit at the same time out to the Internet. But since you “only” (this is still very fast…) have 1 gigabit internet, that will become the bottleneck if multiple PC’s are trying to hit the internet at the same time, but the switch will not be the bottleneck. The router is the device that picks and chooses which devices get priority and does the balancing of speed distribution. Switches are just “y splitters” for the Ethernet cables. 
 

It’s more complicated then this in reality, but for a low level understanding, this is how it works in practice. 

 

 

Rig: i7 13700k +Contact Frame - - Asus Z790-P Wifi - - RTX 4080 - - 4x16GB 6000MHz - - Samsung 990 Pro 2TB NVMe Boot + Main Programs - - Crucial P3 2TB NVMe for photo work - - Corsair RM850x - - Sound BlasterX EA-5 - - Corsair XC8 JTC Edition - - Corsair GPU Full Cover GPU Block - - PTM 7950 - - XT45 X-Flow 420 + UT60 280 rads externally mounted - - EK XRES RGB PWM - - Fractal Define S2 - - DellAlienware AW3423DWF 34" -- Logitech Pro X Superlight - - Logitech G710+ - - LTT Northern Lights Deskpad

 

Headphones/amp/dac: Schiit Bifrost Multibit - -  Schiit Lyr 3 - - Fostex TR-X00 - - Sennheiser HD 6xx

 

Homelab/Media Server: Proxmox VE host - - 512 NVMe Samsung 980 RAID Z1 for VM's/Proxmox boot - - Xeon e5 2660 V4- - Supermicro X10SRF-i - - 128 GB ECC 2133 - - 10x8TB WD Red RAID Z2 - - 2x 800 GB SAS SSD’s (1 SLOG, 1 L2Arc) - - 45 HomeLab HL15 15 Drive 4U - - Corsair RM650i - - LSI 9305-16i HBA - - TreuNAS + many other VM’s

 

Unifi UDM Pro in front of full unifi network infrastructure

 

iPhone 17 Pro - - MacBook Air M3

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