4870 Overclocking Thread

[Makubex_GB]

You need to rename furmark to be able to run it properly. ATI crippled it since 8.8. As it is now this does not give you a complete picture of stability unfortunately, though ATITool being artifact free bods well

Edit: Apparently the reason for renaming it is because "Catalyst 8.8 have been optimized to detect FurMark and downclock the frequencies of a Radeon HD 4850/4870 to avoid to burn the GPU". But as you can see AMD GPU Clock Tool seems to overwrite that problem since my clocks didn't go down.