hi
am planning to buy a psvita so which one is better i am concerned also about vitamin plug in gpu 444mhz
does the slim version support it
sorry for the noob questions as i am new to the scene.
Um so what exactly are you looking for personally here? This is a opinion based question and we can't tell you what to get. You have to make the ultimate decision. If you explain what you want to have maybe better to help.
Between the two, ps vita phat has a oled which everyone says looks better. It also has some models with 3G support from a cellphone service provder.
The slim has slimer design, extended battery life, LCD screen which is not a big deal unless like everyone else actually care about which screen is in the system, as long as you can see and play the game it should be okay. It also has 1 GB internal storage, so even if you can't purchase a memory card, you can save data, just don't try downloading huge games from PS store, You mostly can use it for saving game data for retail and updates. Though you can't use both internal and memory card at same time, some problems i guess.
either way you can decide with this info i guess

They both pretty much do the same things, it comes down to preference.