Sometimes speeds can be misconstrued, it happens quite often in all markets of the digital age. If consumers are fed a line saying "up to 1Gbps speed" some do believe they should see that 1000 number when testing it, even if they were to get 125MB/s which is the theoretical cap on 1Gbps, they don't know that it is in fact performing at 1000mbps because many software tools for testing those speeds usually measure in the lower form.
Same here: more than 60 MB/S between 2 gigabit connected Windows machines. Nearly the same as with a 24 port managed switch.
The bold number represents a speed higher than 100Mbit and lower than 1000Mbit, but it is in the lower form 60MByte(most likely measured with software as such as well). If measured in bit it would be 480Mbit, which wouldn't be possible to obtain without the use of gigabit.
I rest my case...
There are 8 bits per byte, that is the general rule. If you have been given any speed reference in bits like 1giga
bit, then you must divide that number 8 times to find the lower form in byte. eg. 1000bit/8 = 125MByte, or Cable broadband - 8Mbit/2Mbit(advertised speed) would equal 1MByte/250KByte (measurement seen in your browser)
Gigabit networking also uses all four twisted pairs within an ethernet cable as opposed to 10/100megabit, only uses two pairs. Cat 5, cat 5e. or cat 6 is required. The cable must conform to many tight specs. for proper gigabit speeds. If experiencing lower speeds than expected, test the cables, try shielded cables, or opt for cat 6.