Gigabit 1000 mbps on At&t DSL for Gaming PC?

Question

I'm not sure where to start. lol. I was just on the phone for an hour and a half. First, I was probably transferred to India, since I couldn't understand anyone... after being transferred 4 times back to the U.S., they said I was transferred to the wrong side of the country over in California, at that point I just hung up. I'm sure you guys are much smarter anyways, so here's my questions:

Summary:  I have the At&t DSL 8mbps plan which is the largest they offer for my area (No Uverse). I only get like 5.8 mbps dl, but that's wireless right now and I plan on going the LAN ethernet way. So, I want Gigabit 1000 mbps port speed, because I think it will help. Obviously, information will only travel as fast as it's slowest part.  I currently have an At&t wireless modem/router combo 10/100 (1 unit). I want to buy an aftermarket router and an aftermarket modem if needed. I will also buy an internal gigabit network adapter for my PC.  I'm listed this in number order to make it easier, starting from the street and working my way into my house with these questions:

1. Service comes in through a regular old telephone line from the street. Can this carry such a fast signal as gigabit 1000 mbps technology? 

2. Do I need a DSL modem to take in this telephone cord and convert it to an ethernet cable?  WHAT MODEM DO YOU RECOMMEND? Most of the modems I see are cable modems but that's not what I have.

3. Is this overkill? Here's the router I've chosen: http://www.amazon.com/RT-N66U-Dual-Band-Wireless-N900-Gigabit-Router/dp/B006QB1RPY/ref=cm_cmu_pg__header

4. Here's the cable I'm buying:  http://www.amazon.com/Mediabridge-Networking-Cat5e-Patch-Cable/dp/B001W26TIW/ref=wl_it_dp_o_pC_nS_nC?ie=UTF8&colid=VJXMWSEWBHK0&coliid=IMPUYXKHN3EIV

5. Here's the network adapter I'm buying:  http://www.amazon.com/Intel-Gigabit-Network-Adapter-EXPI9301CTBLK/dp/B001CY0P7G/ref=wl_it_dp_o_pC_nS_nC?ie=UTF8&colid=VJXMWSEWBHK0&coliid=I3HJ1XQHWVW9N8

My MAIN questions are: am I starting out with 1000 mbps port speed coming in from the street with a telephone line  AND  what modem do you recommend. Is gigabit port speed technology really going to help my internet that much? Is it worth buying all this new equipment? I've heard of people using switches, would this take the place of a modem? The less I have to buy the better. Any recommendations? I'm still learning, but this seems like it might help. Thanks!

Rebecca · Accepted Answer

Going gigabit on your LAN will not improve your Internet speed one iota.  As you suggest, the speed is only going to be as fast as the slowest link in the chain.  Upgrading your LAN to gigabit doesn't affect the speed of your DSL connection in the slightest, they are entirely separate circuits.

vansoest · Answer

In computing speed, one gigabit does no longer equal a thousand megabits. It follows the foundations of commonplace binary storage: by way of long-established convention it is authorized as a yes, nonetheless, there are actualy 1024 MegaBytes in 1 gigabyte. There are 1024 Kilobytes in a Mega Byte, and 1024 bytes in a kilobyte. This is due to the nature of binary, the place every binary placement value represents a double of its predesecer: binary: zero--zero--zero--0 denary: 8--four--2--1 When building computer systems, it is more intelligent, logical and less expensive to construct in these binary figures. That is why 1024 megabytes is 1 gigabyte.

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Gigabit 1000 mbps on At&t DSL for Gaming PC?

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