Hej
Du borde få stor skillnad även på en långsam disk.
Mellan tummen o pekfingret borde det gå flera ggr fortare över usb3 o vill du synka mellan 2 externa diskar blir det löjligt stor skillnad.
Här är lite saxat från wikipedia USB:
Transfer speeds in practice USB2
As of 2004[update], the actual throughput of USB 2.0 high bandwidth attained with a hard drive tested on a Mac was about 18 MiB/s, 30% of the maximum theoretical bulk data transfer rate of 60 MiB/s (480 Mbit/s). On Windows, the highest speed observed was 33 MiB/s, or 55% of the theoretical max. The drive could reach 58 MiB/s on Firewire, so the drive's speed was not a limiting factor.[56]
Features USB3
A new feature is the "SuperSpeed" bus, which provides a fourth transfer mode at 5.0 Gbit/s. The raw throughput is 4 Gbit/s, and the specification considers it reasonable to achieve 3.2 Gbit/s (0.4 GB/s or 400 MB/s), or more, after protocol overhead.[70]
Resten har jag med eftersom jag letar efter usb3 förlängningskabel och försäljarna, även det heliga inet... gärna vill sälja på folk usb2-kabel. Vilket omöjligt kan funka i full hastighet...
When operating in SuperSpeed mode, full-duplex signaling occurs over two differential pairs separate from the non-SuperSpeed differential pair. This results in USB 3.0 cables containing two wires for power and ground, two wires for non-SuperSpeed data, and four wires for SuperSpeed data, and a shield that was not required in previous specifications.[71]
To accommodate the additional pins for SuperSpeed mode, the physical form factors for USB 3.0 plugs and receptacles have been modified from those used in previous versions. Standard-A cables have extended heads where the SuperSpeed connectors extend beyond and slightly above the legacy connectors. Similarly, the Standard-A receptacle is deeper to accept these new connectors. On the other end, the SuperSpeed Standard-B connectors are placed on top of the existing form factor. A legacy standard A-to-B cable will work as designed and will never contact any of the SuperSpeed connectors, ensuring backward compatibility. SuperSpeed standard A plugs will fit legacy A receptacles, but SuperSpeed standard B plugs will not fit into legacy standard B receptacles, so a new cable can be used to connect a new device to an old host, but not to connect a new host to an old device; for that, a legacy standard A-to-B cable will be required.[72]
