Internet speed issue with my modem and router pair

user55009

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Jun 27, 2017
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Hi all, I've been having an issue with internet speed for a while, but nothing is wrong on the ISP's end of things. I let it go until recently when I upgraded my internet speed. My ISP is Xfinity, and the package I pay for is a speed of 200 Mbps (previously I had a package with 150 Mbps, and the speeds I got for that when testing were the same as what I get with the new package). When I speed test using my desktop computer, which is connected to my router via ethernet cable (and the router is connected to my modem via ethernet cable as well), I get approximately 90 Mbps. When I test wirelessly, I get about 35 Mbps. The modem I use is a Netgear CM500, and my router is a Netgear N600. From what I understand, I should be getting much higher speeds when testing, both wired and wireless. Am I wrong, or is something else going on? Anybody know what's up?
 
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90 is about right for 100mbps ports which is what your router has. There is a little bit of overhead in the data transfer so you getting 90% is pretty good. Wireless speeds are massive lies..or marketing depending who you ask. Saying 300mbits is like calling a gigbit port 2gbit because they add transmit and receive speeds. Then they test in a magic lab situation with data that is not common to what is used in real life.

35m is rather slow but maybe you would get 50-70 if it was in a good mood. The speed is also greatly affected by the nic card in your machine but mostly it is affected by how your house is constructed and how many neighbors you have interfering with your wireless signals.

The only way you are going to...
Sounds like there is a connection that is only running at 100m. Be careful about your part numbers there are 2 different routers from netgear that have n600 speed, the main difference being that one has gigabit ports and the other only has 10/100 ports.

If all your equipment is gigabit then I would suspect a bad cable. Some routers have a screen that show the speed the ports are running at.

Your best test before you call the ISP is to plug your machine directly into the cable modem, you will have to power cycle the able modem first to get it to accept your PC.
 

user55009

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Jun 27, 2017
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4,540


I have the WNDR3400v3 model, which I thought was the gigabit port one, but according to the Netgear site, it doesn't have a gigabit WAN port, but it does say it supports wireless speeds up to 300 Mbps, so shouldn't I still get higher speeds than 35 wirelessly, and higher than 90 wired? I'll definitely try the test you suggested as well, thank you!
 
90 is about right for 100mbps ports which is what your router has. There is a little bit of overhead in the data transfer so you getting 90% is pretty good. Wireless speeds are massive lies..or marketing depending who you ask. Saying 300mbits is like calling a gigbit port 2gbit because they add transmit and receive speeds. Then they test in a magic lab situation with data that is not common to what is used in real life.

35m is rather slow but maybe you would get 50-70 if it was in a good mood. The speed is also greatly affected by the nic card in your machine but mostly it is affected by how your house is constructed and how many neighbors you have interfering with your wireless signals.

The only way you are going to get 150m on wired is with a router that has gigabit ports. To get that speed on wireless is going to require you buy 802.11ac router and nics to even have a chance. Still if you live in a area of high wireless usage the interference will slow down even the best routers on the market.
 
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