AMD has announced a new Radeon HD 7750. The new 7750, which will not be replacing the old 7750 yes is a higher clocked SKU. That also means its a higher power consuming Cape Verde card, which takes advantage of the fact that AMD had to underclock the 7750 for power consumption purposes. As you may recall the original 7750 was designed to be the most powerful 75W card on the market
AMD Announces A New 900MHz Radeon HD 7750