Thanks for the screenshot. The max Bandwitdh entry in SPD Tab results from the highest available JEDEC profile provided. In your case that is / should be DDR3-1066 (533MHz). The failed reading of slot 1 doesn't really matter, since your system obviously set the correct timings nonetheless. If you want DDR3-1333 with these sticks, then you need to enable the XMP. ASUS and Gigabyte mainboards have a feature in UEFI called D.O.C.P. and E.O.C.P. that will make an XMP work for AMD systems as well. Other manufacturers might have a similar option under a different name.
Adding another SPD profile (Non-XMP) for DDR3-1333 with Thaiphoon Burner might not work if this kit already needs 1.65V at this speed. The JEDEC profiles have to use 1.5V or 1.35V (for DDR3L) by default.