Overclocking the 680i

NVIDIA talked up the overclocking on the 680i chipset so much that I was almost on the verge of anger when my Core 2 Duo E6700 processor would ONLY overclock to a FSB of 1500 MHz.  However, apparently that processor had some issues, because after putting in the Core 2 Extreme X6800 processor, our results were even more impressive.

EVGA's NVIDIA nForce 680i Chipset for the Intel Platform - Chipsets 126

This was the highest FSB overclock I was able to achieve using stock voltages througout the system – a 1625 MHz FSB is nothing to sneeze at.   Not too bad but I think we can do better…

EVGA's NVIDIA nForce 680i Chipset for the Intel Platform - Chipsets 127

While leaving memory at sync mode, essentially setting to half of the FSB speed, I was able to reach 1750 MHz without an issue; leaving the memory running at just under 800 MHz.

EVGA's NVIDIA nForce 680i Chipset for the Intel Platform - Chipsets 128

But I still wanted more!  I was able to push the FSB up to 2025 MHz using unlinked memory settings and leaving it at 800 MHz.  2025 MHz!!!

EVGA's NVIDIA nForce 680i Chipset for the Intel Platform - Chipsets 129

Tweaking the system a bit more, I was able to keep the system FSB to 2025 MHz while moving the memory bus up to Sync mode at 1012 MHz at 1T memory speeds!  The memory used in these tests was the new Corsair Dominator Twin2X-2048-9136C5D kit that was sent along with the motherboard.  Rated at 1142 MHz, these modules did do 1200 MHz without much fuss as well!

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