Overclocking
As you'll appreciate after reading through this review, Sapphire's card jumps up to 950MHz core in most games, up from the 800MHz default on the bone-stock edition. Readers will also know that the HD 7950 has loads of frequency headroom, so much so that Sapphire's actually being rather conservative with its clocks.
Adding 0.1V on top and using the firm's TriXX software, we managed a final speed of 1,160MHz core and 6,000MHz memory. The overclock is generally consistent with that attained on other HD 7950 cards.
The frequency boost overrides the PTWB feature, meaning the card runs at an in-game 1,160/6,000MHz and doesn't boost still further. Handsome overclocks obviously lead to decent performance, with the review card storming past the HD 7970 with consummate ease. The bad news, if you want to call it that, is power-draw increases to 301W and noise to a shade over 40dB.
