Benchmark Reviews is no stranger to the Radeon HD 4870 and today we add one more to the ranks: the ASUS EAH4870 Dark Knight Top. This 'DK TOP' model comes equipped with ASUS' famed Dark Knight cooler and claims of a 9% performance lead over stock 4870's thanks to an impressive factory overclock. In today's review, we'll put this claim to the test and find out what kind of performance the EAH4870 DK Top brings to the table.

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