from AMDs 5770 to 6970 ?

calling the experts here. i am not much into technical stuff. i basically just buy things.
so back to the topic

happy with the 5770 but i plan on giving it to a pal who fried his GPU few days ago. so i wondered if it makes sense anyways.

roughly my specs are.

AMD Athlon II X4 620 Processor 64bit win 7 8GB RAM

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