You are off by a factor of 1000. Top end CPUs and GPUs are in the billions of transistors. I believe 8Gb DRAMs are shipping commercially now (so 8G transistors and then some)
Sure, but this only supports a simple point I tried to make. Let me try again: today transistors are so small and appear in such large quantities as part of large-scale integrated circuits that counting them is almost like counting molecules (or, let's say, bacteria, as one commenter has pointed out earlier). Such "astronomical scales" make for catchy headlines, but that's about it. (Not a very interesting observation on my part, I admit.)