Final answer:
The statement that a SATA 3 connection rated at 750Mb/sec is actually transmitted more data than the rating due to 8b/10b compression is false.
Step-by-step explanation:
In SATA (Serial ATA) 3, the 750Mb/sec rating is the raw data rate, but due to the 8b/10b encoding scheme used for data transmission, some of the bandwidth is used for encoding overhead. 8b/10b encoding ensures that the transmitted data has enough signal transitions to maintain synchronization between the sender and receiver, but it does introduce some overhead, resulting in a slightly lower effective data rate. Therefore, the actual data transmitted is slightly less than the raw data rate.
For example, with 8b/10b encoding, if a device is transmitting data at a raw data rate of 750Mb/sec, the effective data rate would be slightly lower than that, although still close to the rated speed.