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Radeon HD 4890 Overclocked To 1.2GHz

"Only" needs a little bit of dry ice

Zac O'Vadka | Apr 17, 2009 at 01:15 am CDT (0 mins, 54 secs reading time)

When the ATI Radeon HD 4890 launched earlier this month, everyone knew that it would only be a matter of time before the 1GHz core clock speed was achieved in the overclocking community and it did come rather quickly. After all, a 150MHz increase isn't much these days given the vast array of air and water cooling products on the market.

Radeon HD 4890 Overclocked To 1.2GHz

Now overclockers are getting a little more in depth with the 4890 and starting to push it a little bit further with some of the more extreme forms of cooling, liquid nitrogen and dry ice. So far liquid nitrogen has enabled the card to be pushed to 1.13GHz with a modest voltage increase.

Radeon HD 4890 Overclocked To 1.2GHz

(Click the above image for the large version)

Dry ice has proven to be a little more effective, raising stable clock speeds to 1.2GHz with a voltage of 1.425V. ATI's Catalyst Control Center won't allow the GPU to go faster than 1GHz even, but VR-Zone has a very useful guide on just how to get the voltage a little higher in case you are thinking about giving it a shot.

Last updated: Apr 7, 2020 at 11:14 am CDT

Zac O'Vadka


Zac provides professional IT support by day, but plays the role of enthusiast by night. He's been building high-end custom computer for the nearly fifteen years and writing PC hardware reviews for the better part of a decade. Aside from computers, he also dabbles in quite a bit of home A/V equipment. Throughout the years, Zac has picked up an extensive knowledge of power circuitry and leverages this to provide the PSU reviews. When not found testing or writing, you can often find him speeding through the winding countryside on his motorcycle.

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