![]() Our overclock pushed up power consumption by 10W under Metro and 18W under OCCT. So how well does the HD 7870 OE hold up once further overclocked? ![]() As with other 7870 boards a 5.4GHz memory clock is a rather constant factor since all of these reference boards start seeing diminishing returns on performance at higher memory clocks due to memory bus errors, while the core overclock is 50MHz lower than we've seen on other 7870s, but as we said before this comes down to the luck of the draw. This is a 100MHz (9%) core overclock and 400MHz (8%) memory overclock respectively. When it comes to overclocking our HD 7870 SE topped out at 1150MHz for the core clock and 5.4GHz memory clock. With competent cooling overclocking comes down to the luck of the draw Sapphire's basic binning process for their OE cards should push the better boards into the OE product line, but even then there's no real guarantee how much higher any of these boards can go. Since the HD 7870 OE is a semi-custom card - meaning it's using AMD's reference board - there aren't a lot of surprises here. ![]() As always we wrap up our review of a customized card with a look at overclocking performance. ![]()
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