techPowerUp posted a review on the HIS HD 4670 IceQ Turbo 512 MB
A quote from the article:
>> HIS HD 4670 IceQ Turbo 512 MB Review
HIS' latest HD 4670 card comes equipped with the VGA Silencer made by Arctic Cooling. It also features an extra 30 MHz core clock. Even though it is factory overclocked we saw another 10% overclocking potential on both core and memory.
>> HIS HD 4670 IceQ Turbo 512 MB Review