BonaFideReviews posted a review on the HIS X1650 XT Turbo video card

After reviewing HIS' X1950 Pro Turbo card just the other day we now take a look at their X1650 XT. You may think that the X1650 XT is just a slightly higher clocked X1650 Pro but you would be wrong. Yes the XT does have a tad increase in clock speed over the Pro version, 5MHz in core speed and 60MHz in memory speed, but the biggest difference is in the physical structure and architecture of the card.

HIS X1650 XT IceQ Turbo Dual DVI 256MB GDDR3 PCI Express Video Card Review