When technology reached the speed limits of single processor cores, they were made more efficient and eventually multiplied in number. (theverge.com)
It runs on 1 GHz SC6815A single Processor with 512 MB RAM. (maktechblog.com)
And while it certainly feels quick in general use, it's at most only a little quicker than, say, the HTC Desire S or the Samsung Galaxy S, both 1 GHz single processor Android beasts. (theregister.co.uk)