Peter Jason wrote:
> I have Win7 ultimate, an i7CPU and a GA-X58A-UD7 motherboard.
>
> The motherboard has 3 USB3 connections:
>
> 1/ The four at the back panel called "USB 3.0/2.0 port".
>
> 2/ Two extra on a plug-in USB 3.0 PCI-e card (Shintaro USB3.0, 2-port
> PCIe SHUSB3PCIE)
>
> 3/ Two extra from a small socket at the very bottom of the motherboard
> called "USB headers "F_USB1/F_USB2/F_USB3"
>
> I need to know if these are all equivalent in performance (speed) when
> using a flash drive for images and video.
>
> Is it OK to use the HDD performance checkers (such as HD-tune Pro) to
> determine the fastest port and the best Flash Drive?
>
> Peter
You can do "sustained read" testing if you want, as that doesn't
hurt the flash memory. Even the free version of HDTune (2.55) can
do that for you.
*******
They make USB3 flash drives now, so if you want to benchmark,
try one of these. This one is expensive, at $179.
http://www.newegg.com/Product/Produc...82E16820220584
"sequential reads were consistently between 185-195 MB/s and
sequential writes were consistently between 117-119 MB/s"
If you run a USB2 device on a USB3 port, expect USB2 speeds.
In the low to mid 30MB/sec range best case.
If you use a USB3 device on a USB3 port, then it can use
the set of pins that support higher speeds. The upper
limit (predicted value) is 336MB/sec or so, and no device
does that, just yet. The best value seen in storage devices
that I've heard of, is around 200MB/sec. Maybe the 336MB/sec
value will be unobtainable. Only time will tell.
HTH,
Paul