Bring up the topic of overclocking to the major system manufacturers and you hear a variety of responses ranging from ‘we’re plenty fast enough now – take a look at our _____ (insert benchmark here) that’s enabled by our use of ___________(insert techno feature here)” to “it’s just not safe, son, and our customers need to be …
How long before intel locks all but their highest spec processors down again?
this idea has come far too late
Overclocking means the CPU will use a lot more power - up to a point where the flops/watt is dropping in efficiency. This is very important in supercomputing, less so in a single gaming PC so not quite the same thing....
Having said that IBM already do this with the latest Power7 machines - you can turn off half the cores and have the other half running very fast (overclocked) where single thread performance is important.
Some processors are able to get a stable 200Mhz-600Mhz OC with no voltage changes. At the +600Mhz end, sometimes the voltage increase need only be +0.01V. Fairly marginal power draw increase (check the Q9505 in your link). Of course, the article need not say that the OC be from a stock 2.4Ghz up to a 4Ghz OC. Likely, they'll push a +400Mhz or so to keep power draw down in a sweet spot. However, if companies are willing to refresh their entire server setup with highest-end premium parts every year, paying a higher power bill might be the least of their concerns.
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