two slot

what is a gpu dual slot? is there also a single slot gpu, if so what are the differences? it's how many "slots" it takes on the motherboard/case, every PCI lane is a slot sorta, dual slot means simply it will take the size of two lanes while single only one. rtp slot cuan77 Personal Desktop": CPU: Intel Core i7 10700K @5ghz |~| Cooling: bq!