Why is my Internet speed different on different computers?

Devices (phones, tablets, PCs, etc…) can have very different Wi-Fi and cellular radio capabilities. This means you might get one Speedtest result on one device and a different result on another, even using the same provider. Some devices may not be able to measure the full speed of your internet service.

How do I test network speed between two computers Mac?

Launch Speedy Net on two Macs on your network—it works only over a local network—and, assuming the Macs can see each other, each will show up in the Network Devices list on the other. On either end, select a connection to test, choose the amount of data to transfer (10GB, 1GB, 500MB, or 100MB), and click Start Test.

How can I test my network drive speed?


  1. Open Disk Utility tool.
  2. Select the network drive to test.
  3. Select the benchmark option.
  4. Run the benchmark.

What is the difference between iperf and iperf3?

iperf is a simple tool to let you measure memory-to-memory performance access a network. iperf3 is a new implementation from scratch, with the goal of a smaller, simpler code base, and a library version of the functionality that can be used in other programs. iperf3 is not backwards compatible with iperf2. x.

How do I use iperf to test network speed between two computers?

Client Mode Now, go to your second computer and type, iperf3 -c 192.168. 1.101 , to start the client. (You should replace the fictional IP number with your own server IP address). The client will immediately start to send data to the server as fast as the hardware possibly allows.

What is the speed of wide area network?

Comparing WAN Vs. LAN Vs. MAN

With a WAN, you can get lower speeds of data transfer of 10-20 Mbps. With a LAN, you can get higher speeds of data transfer with 10/100/1000 Mbps Ethernet (high speed). With a MAN, you can get speeds of data transfer up to 100 Mbps.

Is iperf a TCP or UDP?

Iperf supports two types of transport protocols: TCP and UDP. The major differences between the TCP and the UDP test are bandwidth and results returned. In TCP mode the sender generates as much data as supported by the network, while in UDP mode the user has to define the rate of transmission.

Is iPerf3 a TCP?

IPERF3 is a free open-source tool that is widely used for measurements of the maximum achievable throughput between point-to-point connections and it can be used with TCP and UDP protocols.

How to test network speed between computers for free?

Here are 6 free network benchmarking tools that can be used to test your network speed between computers to make sure the network is running at the speeds you expect. 1. LAN Speed Test (Lite) The Lite version of LAN Speed Test is a standalone portable executable of 122KB and basically an older free version of the shareware program.

How does network speed work?

Let me explain how that works. Become a Patron of Ask Leo! and go ad-free! When it comes to network speed, look at how your devices are connected. If you’re transferring data from computer A to computer B, the maximum network speed between those two machine will be the speed of the slowest device between them.

How do two computers communicate with each other at the same speed?

If they’re both connected to the same gigabit switch, then in theory those two computers would communicate with each other at a gigabit. In reality, speeds are actually somewhat slower for an assortment of reasons, but you’re maximizing what you can by actually going through the gigabit switch.

How to measure the speed of your LAN network?

It’s an easy to use tool for measuring the speed on your LAN by copying a file to another computer that is located on the same local network. All you need to do is browse to a folder of another computer on the network where you have write access and click the Start Test button.