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There are quite a few really good overclocking applications out there, though most are still yet to provide proper support for the Radeon HD 5000 series. However it’s not all bad news for AMD fans, as the Catalyst drivers do provide users with overclocking goodness using the Overdrive function. Typically the Overdrive function is quite limited, providing very little overclocking headroom. However when it comes to the Radeon HD 5750, the option to increase the core frequency as high as 870MHz exists, while the memory can be pushed as high as 1430MHz. Based on our experiences neither the core or memory will be able to hit the maximum frequencies offered by the Catalyst software, so there is no need to try and dig up any other overclocking software.  Using the Overdrive feature in the Catalyst Control Center could not be easier. The first step is to enable Overdrive and that is done by simply clicking on the check box at the top labeled “Enable ATI Overdrive”. The next step is to work out the maximum stable GPU frequency, which for us was 825MHz. The same can then be done for the memory, and we ended up at 1335MHz. The next section of the review will cover how to overclocking the GPU and memory in greater detail, as this process should be done in steps. Getting back to the Overdrive function, you will see in our screen shot that there is also a manual fan speed option, though we did not find it necessary to adjust this. Under full load when overclocked the fan speed never got much above 40% which was quite impressive, particularly given the operating temperature only maxed out at around 80 degrees. Finally the Overdrive feature also provides active monitoring, which covers GPU temperature, GPU activity, and fan speed. |
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