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DSL may be an old-school connection, but it can still handle most household internet needs. But, if DSL is your only option, know that AT&T’s speed promise of “up to” 100 Mbps is like saying you could fit “up to” 100 marshmallows in your mouth. It might be possible, but it’s unlikely to happen. DSL internet typically tops out at 35 Mbps—maybe 50, if you’re lucky.
Fiber-optic internet service, on the other hand, is delivered over microscopic glass strands as pulses of light, and it can hit download speeds over 1,000 Mbps (or 1 Gbps—gigabit per second). Most residential fiber internet services can reach max speeds of only 940 Mbps, which is still an impressive number—especially if you think of Mbps as marshmallows.
The higher the Mbps number, the lower the likelihood you’ll run into video buffering or internet slowing when more than one device or person is online. Triple digits is the place to be.