Flash slower than USB2.0?

[amips]

I frequently back up the usual type of personal data from internal HDD's to either an Intenso Rainbow 32gb pendrive or my Buffalo HD-HX1.0TU3-EU 1TB USB3.0 external HD using a cable from a usb2.0 port. WHY does the Buffalo receive at over twice the speed the pendrive does (8-10MB's versus @ 4MB/s) I would have thought flash would have been faster than a physical HD?????????:confused:

[Synapse]

From the Ebuyer website...max speed of your flash drive....

 

6.5 MB/s write speed

 

That is the maximum, and would probably be expected on an ideal system with a freshly formatted flash drive.

 

Whereas this one

 

http://www.ebay.co.uk/itm/ws/eBayISAPI.dll?ViewItem&catId=58058&item=280957189519&clk_rvr_id=384339127606&afsrc=1#ht_1392wt_1141

 

has a 25MB/s write speed.

 

It is down the the flash drive hardware spec.