sic4672
Android Enthusiast
They are both ARM architecture chips, yes.
Both the Cortex A8 and Snapdragon are System on a Chip (SoC) design, so they both have integrated GPUs. Apparently Motorola decided they wanted an external as well. Maybe HTC will do the same with the Incredible?
SoC means the entire system is on one chip. When they say dedicated GPU, they mean the GPU is a separate die that only performs graphical functions and the CPU need not worry about the heavy graphics lifting. Both the Droid OMAP3430 and the Qualcomm Snapdragon QSD 8650 use Cortex A8 instruction sets, but TI bought the architecture as well has the instruction set while Qualcomm only bought the instruction set and decided to optimize the architecture design inhouse. Clock for clock the snapdragon is slightly faster. The GPU's (PowerVR SGX530 for Droid and ATI Imageon Z430 for snapdragon) are different (14M tri/sec for the PowerVR and 22M tri/sec for the ATI). So honestly the snapdragon is the superior chip. Now how long will it take for developers to take full advantage of that hardware is the real question in my mind.