No. 1000 Mbps and 1 gig, or 1 Gbps, denote the same internet speed, just in different units of measurement. Both Gbps and Mbps are measurements of data transfer or, in other words, internet speed. Mbps stands for megabits per second. Gbps stands for gigabits per second. 1 Gbps, or 1 gig, is equal to 1,000 Mbps.