Graphic Card ddr1 ddr2 ddr3 ddr4 who is better and why ?

Graphic Card ddr1 ddr2 ddr3 ddr4 who is better and why ? Follow publicly Follow privately Unfollow hi i want to buy a graphic card, and i want to be able to run all kind of 3D graphic softwares and games. the problem is that i don't understand much in pcs

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