Therefore, scrubbing is not performed continuously but periodically. As the scrubbing consists of normal read and write operations, it may increase power consumption for the memory compared to non-scrubbing operation. In order to not disturb regular memory requests from the CPU and thus prevent decreasing performance, scrubbing is usually only done during idle periods. It is important to check each memory location periodically, frequently enough, before multiple bit errors within the same word are too likely to occur, because the one bit errors can be corrected, but the multiple bit errors are not correctable, in the case of usual (as of 2008) ECC memory modules. Namely, if the memory controller scans systematically through the memory, the single bit errors can be detected, the erroneous bit can be determined using the ECC checksum, and the corrected data can be written back to the memory. Hence, an ECC memory can support the scrubbing of the memory content. The information in an ECC memory is stored redundantly enough to correct single bit error per memory word. The use of ECC RAM forms the first line of defence against bit-squatting:ĭefcon 19: Artem Dinaburg - Bit-squatting: DNS Hijacking Without Exploitation - YouTube 24% failure rate."Īdvantages of ECC Memory - Puget Custom Computers The ~1% failure rate of the Kingston non-ECC RAM is still very, very good (which is why we primarily use Kingston), but the ECC RAM is even better at an average. ".As the graph above shows, ECC RAM has a much lower failure rate than non-ECC RAM. Reasons to consider ECC RAM if your motherboard and CPU supports it:
MAXING OUT THE RAM ON AN ASUS M5A88-V EVO (BIOS 1801) 1801).Īs well their heat spreaders aren't so ridiculously tall as to prevent the installation of a decent-sized, downward-blowing, after-market CPU cooler (oriented so that it hovers over the VRM) which can cool the Voltage Regulator Module (and to a degree, the north bridge) as well as the CPU.Ībout VRMs & Mosfets / Motherboard Safety with 125W+ TDP processors Why? Because their SPD speed of 1333MHz should allow them to be backwards compatible with most AM3 processors and because their tested 9-9-9-24 timing (at 1600MHz) matches that of the 1600MHz D.O.C.P. Sniper - F3-1600C9Q-32GSR - G.SKILL DDR3 Memory Some 1600MHz 32GB RAM kits for the following chipsets & motherboards:
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