Evidence

Where the numbers come from

Every figure shown with a label says what kind of statement it is. Spec: the maker or a standards body publishes it. Vendor: a vendor’s own comparison, attributed to it, with its baseline. Reported: a named third party states it. Calc.: this site’s model calculates it. Assumed: the model picks a value where no single published figure applies. Below is each labeled figure with what backs it, and then every source, with when it was published and when it was checked.