Asus EAX1800XT Top
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Before wrapping things up, we spent a little time overclocking the Asus EAX1800XT Top using the clock frequency slider available within ATI's Catalyst drivers, under the "Overdrive" tab. Because this card is essentially "pre-overclocked" though, we weren't expecting to gain much more in terms of clock speed.
Asus EAX1800XT Top "Stock" = 695MHz Core / 792MHz Memory
Asus EAX1800XT Top "Overclocked" = 700MHz Core / 797MHz Memory
Asus EAX1800XT Top "Stock" = 695MHz Core / 792MHz Memory
Asus EAX1800XT Top "Overclocked" = 700MHz Core / 797MHz Memory
In the end, we were able to max out the clock speed sliders available within the Catalyst drivers to 700MHz for the core and 797MHz for the memory. These are relatively small clock speed increases of 5MHz each, but we re-ran a couple of benchmarks anyway to see what kind of performance we had gained. The answer is not much. While overclocked, the EAX1800XT Top's 3DMark06 overall score went up by only 14 points, and its framerate in F.E.A.R. increased by only 1 FPS. Perhaps with a more specialized overclocking tool we could have taken her a bit higher.
