This 40Gb Network Should Be Faster… What’s Limiting It?

🔥 I built a 40Gb network… so why am I only getting 20Gb?! In this video I test real-world performance using iPerf3 from my gaming PC through a 40G switch to my Proxmox server using 40Gb NICs and AOC cables… and the results were NOT what I expected. If you’re building a high-speed homelab, running 10G/25G/40G networking, or just trying to push your setup to the limit — this one’s for you. 👇 EVERYTHING I USED (Amazon Affiliate Links) 👇 (Using these helps support the channel at no extra cost 🙌) 🔥 40Gb Network Gear: * 40G NIC (Mellanox ConnectX-3/4): https://amzn.to/4uQnkTx * 40G QSFP+ AOC Cable (80M): https://amzn.to/4uNxGn0 * 40G DAC Cable (alternative): https://amzn.to/4bKCJMy * QSFP+ to SFP+ Breakout Cable: https://amzn.to/47gGN5O 🔥 Switching / Rack Setup: * 10G Switch (TP-Link): https://amzn.to/4sAamYD * Rack Mount Network Rack: https://amzn.to/40OKBrh * Rack Shelf: https://amzn.to/4lQfIwh * Monoprice Keystone Patch Panel: https://amzn.to/4bQ41B3 🔋 Power / Backup: * UPS Battery Backup (CyberPower): https://amzn.to/41qrd41 * Rackmount UPS: https://amzn.to/4c0Wy3n 🔌 Cables / Accessories: * Cat6 Ethernet Cable: https://amzn.to/3PtYc4N * Cat6a Ethernet Cable (10G+): https://amzn.to/4dCQmji * Cable Management Kit: https://amzn.to/4lNrCHj * Velcro Cable Ties: https://amzn.to/4uQMqle 💻 Homelab / Server Gear: * Server Rack Fans(Noctua): https://amzn.to/3PufWwW * Thermal Paste: https://amzn.to/4c4ME0z * SSDs for Servers: https://amzn.to/4c4T3ZK --- 📧 Business Inquiries: [gotwire@gotwirellc.com](mailto:gotwire@gotwirellc.com) 🌐 Website: https://gotwirellc.com 💬 Join the Discord: https://discord.gg/aywsH72veY --- **Join this channel to get access to perks:** https://www.youtube.com/channel/UC9ULtt_vxO8XWDuPyxd6RJA/join --- ⚡ If you enjoyed this video: 👍 Smash that like button (upgrade it to 40G 😎) 🔔 Subscribe for more networking, Proxmox, and homelab content --- #networking #homelab #40G #10G #25G #proxmox #iperf3 #ethernet #serverrack #gotwire