100mb/s on 1GB/S internet

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matrix0077

Reputable
Apr 2, 2014
27
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4,530
so i,ve recently ordered new internet connection at speed 240mb/s i,ve got it with new modem but there is problem i,ve tested it on speedtest and it was only 80mb/s also when i looked at my network details i saw only 100mb/s so i went to configuration and configured jumbo frames to 9KB MTU and Speed and duplex to 1GB/s full duplex but im still not getting 100mb/s and its still not showing on network details its still 100mb/s and its really weird because i remember that on my network i had 1GB/S also when i installed hamachi to check the problem it was also 100mb/s so im guessing it may be a driver problem so i reainstalled my network driver and updatred it and still 100mb/s i don,t know what to do thanks for help. also my motherboard is Gigabyte Z87-HD3 with realtek 1GB/S network card
 
Solution
abailey
Make sure to set your computer adapter settings to AUTO speed. and not force 1000Mbit. Ok besides that have you tried a different ethernet cable? It is possible for a damaged cable to run 100Mbit but not 1000Mbit as it only uses 2 pair of the twisted cable for 100Mbit but uses all 4 pair for 1000Mbit. If replacing the cable does not work, have you tried plugging into a different port on your router? If all of this fails it may be a driver issue with your computer network card. What make/model is your computer NIC?
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matrix0077

Reputable
Apr 2, 2014
27
0
4,530
I,ve turned off jumbo frames nothing happened also technician was here today and fixed and improved some things unfortunetly it didn,t solve my problem right now my internet is really weirdly jumping between connected and not connected but that,s propably internet provider problem tho
 
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abailey

abailey

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Mar 23, 2014
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20,960
Make sure to set your computer adapter settings to AUTO speed. and not force 1000Mbit. Ok besides that have you tried a different ethernet cable? It is possible for a damaged cable to run 100Mbit but not 1000Mbit as it only uses 2 pair of the twisted cable for 100Mbit but uses all 4 pair for 1000Mbit. If replacing the cable does not work, have you tried plugging into a different port on your router? If all of this fails it may be a driver issue with your computer network card. What make/model is your computer NIC?
 
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