I don't know if I what GPU i need between the 6670 1gb ddr5 128bit or 6670 2gb ddr3 128 bit (Sapphire Brand) can someone help me please?
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You want DDR5, it is much faster than DDR3, the standard for RAM in PC's has been DDR3 for a while, in the near future they will switch to DDR4, so consider the switch from 3 to 5 a 2 generation jump, much faster.
you can pair any one ddr3 or ddr5.i suggest pair with ddr5 as it is much faster than ddr3