Knowing that an nVIDIA GTX 275 can hit a Core of 702MHz from the 633MHz stock speed, that it’s GDDR3 can reach 1296MHz from a 1134MHz stock and that the Shader clock goes all the way to 1656MHz from 1404MHz is good, but it doesn’t tell the full story.  Overclocking everything as far as it can go can be an effective method, but it lacks finesse.  Doing so makes it hard to judge which part has the most impact on performance or if overclocking that part has done nothing whatsoever.   AnandTech has your back, as in this review they overclock each part separately to see how performance changes and then push them all together.

“As with the previous look at overclocking, we present our analysis based on percent increases in performance but provide the raw data as well. It’s all pretty straight forward with the raw data, and we do include our highly overclocked 4890 as well as the 900MHz core clocked 4890 that can be picked up pre-overclocked from the manufacturer. For the bulk of the article, we will just be considering the impact of overclocking on the GTX 275, but our conclusion will compare AMD and NVIDIA on overclocking in this segment.”

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