http://modmyi.com/forums/ipad-news/705771-ipad-2x-faster-than-3gs-beats-nexus-too.html
This is very interesting concerning the RAM:
Meanwhile, Anand Lal Shimpi at AnandTech ran some benchmarks comparing the iPad with the Nexus One phone. Both the A4 SoC in the iPad and the Qualcomm Snapdragon CPU in the Nexus are clocked at 1GHz. Since the two phones run different OSes, head-to-head comparisons were impossible, so Anand did some browser and Javascript tests to compare the CPUs and software stacks of the two devices. He found web pages loaded 10% faster on average and network-independent Javascript benchmarks gave the iPad a 37.6% advantage over the Nexus One.
This is very interesting concerning the RAM:
Any analysis of what might account for the difference between the two devices is going to be hampered by Apple's secrecy about the architecture of the iPad. Anand thought it likely that Apple had better interprocess communication due to improved design of Apple's custom SoC possibly including a faster memory bus. The A4's RAM is inside the chip itself, so iFixit had the reverse-engineering consultants at Chipworks go ahead and X-ray it to discover two stacked Samsung DRAM chips. David Carey, vice president of technical intelligence at UBM TechInsights, told the Wall Street Journal that these DRAMs read and write data in 64-bit chunks. "That helps it move a lot of data a lot faster," Carey said. "You are getting two to three times as many bits as would be characteristic in such products."