![]() ![]() Unfortunately, while a parity bit allows the system to detect an error, it doesn't provide enough information to correct the data error. In the case of an error, ECC also allows the system to recreate the correct data in real time.ĮCC uses a more advanced form of parity, which is a method of using a single bit of data (a parity bit) to detect errors in larger groups of data, such as the typical eight bits of data used to represent values in a computer memory system. ![]() In that same 2014 study cited above, Puget found that ECC RAM was 0.25 percent slower than non-ECC RAM, with Registered ECC RAM being 0.44 percent slower (however, they determined the performance difference in non-ECC’s favor is “tiny.”) How does ECC memory work?Įrror correction code is a mathematical process that ensures the data stored in memory is correct. Perhaps surprisingly, ECC RAM is a touch slower than non-ECC RAM, since it takes extra time to check for errors. ![]()
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