I have spent quite a lot of time searching an answer for this question but haven't found an satisfactory answer.
My perception is that everything that you see in your browser is downloaded on your PC. The proof for this is: Let a webpage load in your browser and when its loading completes then select working offline or close your internet connection and save that page, which results in the saving of your webpage on your hard disk with the key to watch this page any number of time you want.
So, it shows that your page's been downloaded when you accessed it and the speed of accessing your webpage will surely then depend on your downloading speed, then where does this term "Surfing Speed" comes.
I may be wrong in my perception but I would love to know the correct answer to my query. Thanks. And yes I admit that my proof does not validate when the webpage is developed in languages like asp.