is Realtek PCIe GBE Family Controller good?

Hi, I bought my laptop a few years ago, it came with Realtek PCIe GBE Family Controller. This is the cable network adapter am i correct?
I just called my isp to ask them what speed i was paying for. They told me 15 Mbps. (or 15 MBps? but i don't think so...)
I was wondering if my adapter actually supports that speed
They also told me they had a promotion, i got switch from TGV 15 (the one I have, 15 Mbps) to TGV 30 (i guess it should be 30 Mbps) for free so is it worth it with my Realtek PCIe GBE Family Controller?

Thank you

edit. i just went on and got about 6Mbps download speed and about 4 Mbps upload speed. I know they are not meant to be the same, are my results normal?
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  1. Best answer

    1Gb/s. Is the fastest chipset normally found in recent desktop and laptops

    Unless the switch or router also supports this standard it will probably run the network at 100 Mb/s
    These are theoretical maximum speeds


    Mike Barnes
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