I found AMD's naming convention easier to understand than that which Intel have adopted recently...
(plus Intel doesn't appear to be doing much for energy saving these days - allegedly the latest "AMD killerCPU" coming out will match, and even beat in some cases, the 7800X3D and only use 3 times as much energy doing so!)
yeap, Intel playing dumb with their new naming as well...
but i found it very amusing to have a 7800 cpu and a 7900 gpu (even tho there are 7800 gpus as well) - to paraphrase a classic: i find their lack of imagination disturbing