So do we have wrong information? Are their specifications valid or not?
Thanks to XDA Developers member HUdasp, we finally have got a missing piece to Qualcomm Snapdragon S1 specifications mosaic. Those chips was previously known as Mobile Station Modems (MSM), but a year agom Qualcomm marketing decided to move them to Snapdragon family, allowing devices manufacturers to position their MSM7x2x based devices as containing Snapdragon SoC. “Snapdragon Inside” sounds pretty well, but what is reality?
MSM 7×27-T (aka MSM7x27 Turbo) was just same chip operating by higher frequency. MSM7x27A and MSM7x25A are based on completely new design. Not only die-shrink from 65 to 45nm, but even architecture step up to Cortex-A5. And, moreover, you can see that MSM7x25A does contain Ardeno200 GPU!
(Click to picture to see in original size)
Concerning row performance, we can count it from ARM Cortex A5 specifications:
MSM7x25 528 MHz x 1.25 DMIPS/MHz = 660 DMIPS
MSM7x27 600 MHz x 1.25 DMIPS/MHz = 750 DMIPS
MSM7x27-T 800 MHz x 1.25 DMIPS/MHz = 1000 DMIPS
MSM7x25A 800 MHz x 1.57 DMIPS/MHz = 1256 DMIPS
MSM7x27A 1000 MHz x 1.57 DMIPS/MHz = 1570 DMIPS
Conlusion: New Qualcomm MSM7x27A and MSM7x25A SoCs bring a performance increase about +60-110% over their predecessors not only by higher operational frequency, but more due their new Cortex-A5 architecture. In addition, MSM7x25A got graphic core, what was missing in MSM7x25. Both SoCs are capable of processing complete ARMv7 instruction set. (Source: Qualcomm Snapdragon detailed specifications)