The operation of motherboard in the overclocked regimes generates many problems witch are absent @ stock setting. therefore the oriented to overclocker chipset NVIDIA nForce 680i SLI from the beginning was a series of scandals with different kind of problems. Many, for sure, remember the problem with hard disks interface serial ATA, which rejected normally to work with the connection to motherboards, based on chipset nForce 680i SLI. the bios update solved problem.
Meanwhile immediately after the appearance of first motherboards on base of chipset nForce 680i SLI , forums where filled by communications about memory module failure with attempt to overclock in these motherboards. The technical support services of NVIDIA partners consider that problem lies in memory modules .
However, declaration on site EVGA allowed us to understand that the problem with memory failure in motherboard on base of chipset nForce 680i SLI underwent study from NVIDIA side . Company conducted consultations with memory modules and microcircuits producers . ANd they come to the following conclusion: reason for failure of memory modules is the destruction of microcircuits crystals with prolonged operation under voltage (Vmem)2.4 v. let us note that many overclocking memory module work with this voltage, although for DDR-2 standard voltage is considered as 1.8 v.
NVIDIA showed that the problem is manifested on different motherboards, even in those based on chipset from other producers. Problem does not relate directly to the motherboards, based on chipset NVIDIA nForce 680i SLI or other chipsets. During similar problems NVIDIA recommends to check with memory producers for additional information and guarantee .