CPU locking
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CPU locking is the process of permanently setting a CPU's clock multiplier. AMD CPUs are unlocked in early editions of a model and locked in later editions, but nearly all Intel CPUs are locked and recent models are very resistant to unlocking to prevent fraudulent CPU speed claims by resellers.
Users unlock CPUs to allow underclocking, overclocking, and front side bus speed compatibility with certain motherboards, but unlocking invalidates the manufacturer's warranty and mistakes can cripple a CPU. AMD CPUs are generally unlocked by connecting bridges (jumper-like points) on the top of the CPU with conductive paint or pencil lead. Other CPU models (determinable by serial number) require different procedures to be unlocked.
External links
- Guide to unlocking the Athlon XP (http://www.sharkyextreme.com/guides/hwGuides/article.php/10709_1009731__7)
- Another guide to unlocking the Athlon XP (http://www.thinktechie.com/articles.php?id=13)