Apart from a driver issue this may explain the slower USB 3.0 performance in TecPowerUp's review of the M5A97 (ASM1042), though they don't say what drive(s) they were testing in the back and front USB ports and whether it/they were the same for all the boards they compare.
The drive's model and type for all interfaces are listed in the Test System configuration table. I use the same hardware for testing all boards, minus CPU(as AMD boards cannot use Intel CPUs, etc). The one thing that changes is ram, but all ram I have( 6 kits) is tested in each board looking for compatibility issues.
Here on the top of page 8 is the test system config:
http://www.techpowerup.com/reviews/ASUS/M5A97_EVO/8.html
Are you telling me they have updated the USB3.0 controller in this ASUS board?
You post makes no real sense to me, otherwise.
Also, Tweaktown advertizes 10X USB3.0 vs USB 2.0, but that is only really going to happen if you are using an SSD in a USB 3.0 enclosure, or a drive that offers 10x performance than what USB2.0 allows. You'll never find me making marketing statements like that. MY USB3.0 native drive is NOT 10x faster on USB3.0 over USB2.0, unfortunately!
USB 3.0 for the drive only offers 2x performance, yet performance suffered.
Yes, it could have been a driver issue that gave lower numbers, as I had these boards, and was testing them, long before they were in retail, and long before any other reviewer had them. Many many times issues I have during test pre-release boards, like the G1Sniper2 I'm working on now, and the MSi board I finished with last week, are fixed before launch. part of what I do is report the issues I encounter to the OEMs in hopes they fix things when the actual product has been sent to stores.
I has an issue with the MSi board...all boards are now shipping with an updated BIOS that I didn't ahve access to when testing. I had to redo some testing once I got the BIOS.
Gigabyte board I have now didn't come with all teh pqackage accessories, maknig my reivew partially incomplete. There is also a very big issue that is already known about, and will be fixed with a BIOS...after my review of it goes live.
Because of problems like this, things liek BIOS version and all the parts used for testing, are listed in my reviews.