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I currently have a 3.1 processor. Is it possible to upgrade to a 3.3 processor?
You can actually go up to 3.4 GHz. Here’s the CPU you need, and a guide for replacing the CPU and the thermal paste is below. Arctic Silver Thermal Paste How to Apply Thermal Paste Arctic Silver ArctiClean iMac Intel 21.5" EMC 2428 CPU Replacement
