How to upgrade graphic card for acer veriton L670G

Del jay , post exect model of PC.
full models,
acer veriton L670G, in english a very very tiny PC desktop and HUGE Limits on upgrades. as all are.
so you want to fit a newer faster GPU card here, you say..

the manual and photos of the guts answer that in second flat.
first there must be PCI-e slot there, that can do GPU lane count X16
ig came with super old intel CORE 2 CPU and IGPU inside it,
the mobo has no GPU slots at all, so where would you plug it in, answer CAN NOT.
it is a what you see is what you got, PC, more ram sure. (if not max now)

next time buy a real PC, if not needing dinky do PCs for a DORM buy a real desktop
one that is good and not expensive is a DELL 3020MT or DT, but never smaller SFF or micros ever.
if flush with cash, dell 9020MT can do 2 times the ram of 3020 (they are sisters)

My guess you dream of gaming (called AAA prime games $60+) if yes, this 670g is useless as lips on a chicken