The Gigabyte HD 5830 might be running on reference clock speeds - 800MHz at the core and 4000MHz DDR at the memory – but it tries to be different by utilizing Gigabyte's specially-designed dual-fan cooler. Coolers with twin fans are not uncommon these days, but what makes Gigabyte's so special is that its fans are inclined at an angle. Gigabyte claims this reduces air turbulence allowing greater airflow and therefore enhanced cooling.
As the Turbo suffix suggests, the HIS HD 5830 iCooler V Turbo comes factory overclocked at 840MHz at the core and 4400MHz DDR at the core. The card also features HIS' iCooler custom cooler, which again, as its name suggests, is in its fifth generation. According to HIS, the new iCooler promises not only better cooling efficiency but also lower noise operating levels.
MSI's celebrated Twin Frozr II custom cooler makes another appearance, this time on the MSI R5830 Twin Frozr II. We have had great experiences with the Twin Frozr II cooler, so we are expecting this card from MSI to run really cool. That aside, the card also comes with MSI's usual suite of “Military-Class Components”, which includes solid state chokes and Hi-C Caps for better voltage control, overclocking and efficiency. So it's a pity to find that despite all the features the card is packing, MSI has unfortunately decided to go with reference clock speeds for this card.