There are more complex (and ridiculously expensive) hardware testing and benchmarking tools which can even simulate lost or corrupted packets of data just to see how well a network card would auto correct the data or how much time it takes to have data retransmitted and so on. TomsHardware used Passmark PerformanceTest 8 to test powerline adapters : used this to test the Killer E2400 network card :
#Lan speed test 3.4 professional#
NTttcp seems more professional (but it's harder to use since it's command line only): but LAN Speed Test and Netstress sound good (though they're not very scientific/ not very repeatable results) : There are benchmarks that can tell you the speed. Otherwise, it's really very hard to know the quality of a cable the way you think. The network cards would auto configure themselves to 1gbps and if there's some issues like for example one loose contact in the jack (and if you're lucky it's one of the four wires that are not in use when running at 100 mbps), then the network card would detect errors transmitting at 1 gbps and will fall back to running at 100 mbps. For 100 mbps, just two pairs of wires are used and the other four wires (2 pairs) are not used. So, if you use a crossover or normal cable, it doesn't matter, you'd still get up to 1 gbps speeds if both network cards (or your network card and your switch port) are 1gbps capable.īut the point is, few people buy crossover cables anymore because of this autodetection mechanism, so if your cable is crossover there's a high chance it's an old one, so it's probably only Cat5e or older.įor 1gbps speeds all four pairs of wires must be properly installed. Network cards capable of 1 gbps speeds are smart enough (and it's actually required by the 1gbps standard) to determine if the cable is crossover or normal and automatically reconfigure themselves to work right in any situation. If the color order is the same in both connectors, you have a straight (normal) cable, if the color order is different in one jack you have a crossover cable (a cable designed specially to be used between two computers / two network cards) Look at the wires going into the connector. If you have no idea what category it is, chances are it's Cat5e which means it can do up to 1 gbps.Ĭat5 or older cables would be maybe more than 10 years old nowadays, so I doubt you'd use a cable with the exterior insulation all messed up (which would happen in 10 years)
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