Its a bit weird what Nvidia is doing
Like how does an customer knows an difference between an Mainstream and an Perfomance
and the shop isnt going to help because most of the time they are lying pricks.
I have an PC that always crashed in the summer...Weird I thought. well NOT! I opened the Case looked at my Fans....holy s***! the shop put them the wrong way. the Case Fan was blowing into the Case while it should blow the hot air inside out of the case
. since then my Temperature is Stable and only increase with 15ēc while i,m playing.
but back to Nvidia
Nvidia should mark it on there Series
example:
like 6600GT (M)
and 7800GT (P)
but still I always check the Nvidia Site when I,m going to buy an new one to see the Specs.