12.5 MB/s = 100 Mbps. Looks about right on the max speed allowable on a 300 Mbps connection.
As I said above, the max speed for a 300Mbps connection is 8MB/s. It will not pass that limit. Due connection conditions, interference, distance to router, and so on, it will actually not pass over 7,6MB/s.
Recursively, 12,5 Mbps is the expected speed for a 492 Mbps connection.
There is no doubt that the router is actually performing 62,5% over its nominal speed.
No you cannot overclock a router. All routers run on some form of Linux or another. It is all in how the packets are handled, the CRC, if the router is seeing issues with packets and having to ask for corrected ones to be retransmitted, which means that the gateway will start lowering its speed in how packets go through, so that it keeps a stable connection.
Data transmission through Wifi and Ethernet is no different from how it was done in dial-up days, other than the algorithms are better and they are less forgiving to not having to deal with a bunch of different physical problems and environment issues that causes dial-up to take forever.
The other is dependent on what the two systems are doing while data is being sent and received, how many other things that the Gateway is having to do while handling the two machines sending and receiving packets.
Networking is rated in burst lab test speeds, not physical speeds. Everyone's speed is going to be different with networking, all because of their hardware and any rfi noise that can interfere with wifi. If you want more info on networking, check out smallnetbuilder.com
This is a permanent condition, I am getting all the time that speed.
It is exactly the same as if the Connection showed up 492 Mbps. It is performing as 492 Mbps, it is not a "burst", it is steady.
EDIT: I just Stopwatch time and the average speed is 12,2 MB/s for transfer a 4,5GB file
I stated above why speeds vary. You just got lucky and had no processes hogging the CPU on the system you were sending the file through the gateway and the gateway was not busy handling a bunch of network traffic. Using a Stopwatch does nothing. There are programs out there that you place one side on the master computer and one on the slave computer, that tells you an estimate of speed for that test.
If you try tomorrow or next week, you are going to get something completely different in how the packets are handled. It is just nothing to sit and put time and effort to in diagnosing why you got close to test lab speeds.
Thank you again.
I am not sure about what you said.
I am getting this speed as the "Standard" speed on my WLAN, so every day, and tomorrow and the day after, will be the same, I can assure you, or the Router will define in between
Now, what do you mean with that "Test Lab Speed"? Where can I read about it?
Simple maths: 1 B (byte) = 8 b (bits). For instance, let's say you pay for Internet broadband connection for 100 Mbps download / 20 Mbps upload. This means that your theoretical maximum download and upload speeds are about 12.5 MBps (=100Mbps) down and 2.5 MBps (=20 Mbps) up.
Just mark it up to that the Sun, stars and moon were aligned and that you just got a good transfer.