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AMD HD7770 & HD7750 Roundup: Sapphire, XFX and HIS

For overclocking today we are using the latest version of Sapphire's excellent TriXX software tool.

The HIS HD7770 GHZ Ed IceQ X is pretty much close to the limit out of the box, with only 30mhz available via manual overclocking. We could enhance the memory from 1,250mhz to 1,315mhz – just over a 5% increase.

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