I think its a case of the extra SMs just providing so little additional hardware that it's a fart in the wind.In the case of the 12GB desktop 3080, it often performs so close to the desktop 3080 Ti that it seems the extra SMs in the 3080 Ti (and 3090 for that matter) just can't find enough work to do or the memory bandwidth isn't quite enough to fully feed them.
There are prebuilds ar a good price, I think that dell XPS with 3080ti and i7 12700 is down to about $3000... Which is not that bad .I looked up the price, and it's too expensive at €3,277/$3,747. I think it will be OK at $2500 though. Considering the GPU shortage, it's not easy to purchase a Desktop GPU right now.
Im honestly surprised people still think this.$3,700 for Laptop 'Gaming'?
Added benefits include thermal throttling, constant monitoring of temp, poor backup and burnt lap!