PCShopTalk posted a review on the ATI RADEON HD 4830 Video Card
For this test I have used the fan at 40% from Catalyst Control Center and I was impressed to see how cool this card stays at IDLE, considering that the fan is much smaller that a dual slot design. Also, at full load for 5 minutes, the card stabilized at the 73.5 degrees Celsius value, which is more than fine.ATI RADEON HD 4830 Video Card Review