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#1
USB3 HDD slower than ext laptop HDD USB2==>SATA cable
Hi there
WD passport (small self powered 2 TB USB3 drive) has appalling performance compared with an OLD laptop HDD that I connect via a USB2==>SATA cable to USB2 port.
Same file (2GB mp4 video) copied to a directory on the SSD.
External laptop HDD connected via USB2==>SATA cable to a USB2 port -- 41 Mb / sec on average -- Ok for a USB2 device of this type
USB3 device connected to the laptops USB3 port = 31 Mb / sec on average. Same file !!!
So obviously there are USB3 devices that don't perform at anything like the rated USB3 speed -- so don't buy a USB3 self powered portable drive and assume it will give you much better speed than USB2 - it won't.
Some might do but a lot of the smaller self powered "passport" types will leave you less than impressed - especially as Laptop HDD's aren't renowned for their speed anyway !!!!. So a USB3 drive performing worse than a laptop HDD -connected externalyy via a USB==>sata connector ??.
Is USB3 really that good or are we just being conned to buy "newer hardware"
Cheers
jimbo