From an old article published by Puget Systems in 2013 [1]: > Finally, ECC RAM is slightly slower than non-ECC RAM. Many memory manufacturers say that ECC RAM

From an old article published by Puget Systems in 2013 [1]: > Finally, ECC RAM is slightly slower than non-ECC RAM. Many memory manufacturers say that ECC RAM will be roughly 2% slower than standard RAM due to the additional time it takes for the system to check for any memory errors. To verify this, we examined multiple benchmarks that we run on each system we produce. By using comparable CPUs (For example: Intel Core i7 4771 3.5GHz Quad Core 8MB versus Intel Xeon E3-1275 V3 3.5GHZ Quad Core 8MB) we found that this 2% estimate to be roughly correct. Our own benchmarks showed a performance hit ranging from .72 to 2.2% which, given normal testing deviations, is right in line with the 2% estimate. [1]: https://www.pugetsystems.com/labs/articles/Advantages-of-ECC-Memory-520/#ECC_Failure_Rate_Analysis https://www.pugetsystems.com/labs/articles/Advantages-of-ECC...