For those who detest even the slightest buzzing sound of your graphics card, Sapphire prepares two midrange deals with passive dissipation this is to say they are fanless, it is the Sapphire Radeon HD 7750 and HD 7770 Ultimate Silent Series.
Both cards have a large aluminum heatsink and copper heatpipes which serve to dissipate passively the GPU and memory from the this card, besides the power consumption.
Sapphire has not given much information on these cards, but the Radoen HD 7750 Ultimate Silent comes with default frequencies of 800 MHz for GPU and 1125 MHz for memory (1GB DDR5). This model does not require additional power.
For its part, the Radeon HD 7770 Ultimate Silent Edition also incorporates a large aluminum heatsink and heatpipes, Sapphire has had to rearrange the components to fit the new cooler and move the memory chips on the backside of the PCB. This card has 1 GHz GPU frequency, although we are unaware of the rest of the specs at the moment.
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