For system platform, I use Hammer Thor high-end Xigmatek heatsink fan, which served us well in the previous test, as well as LGA1366 Geil Black Dragon 6 GB DDR3-2000 memory kits, one without better usage for heatspreaders of air flow is good. For the Rampage III Extreme, Asus, compact yet sturdy black Xigmatex Midgard W case used. Intel x 25-M SSD 160 GB is in storage.
With the Intel Core i7 980 x samples in my hands, I tested a variety of choices, evaluations at the point where it jumped the voltage needed to exceed speed more benefits. His main focus is on the speed of the CPU cores, while keeping more or less related uncore speed approximately 3.2 GHz to DDR3-1600, still the best compromise for 3-channel LGA1366 systems.
The first is the standard CPU core speed of 3.33 GHz with DDR3-1600 memory, but the maximum possible voltage drop for ' green ' standards for low power operation. About Gigabyte mainboard, as well as the Asus P6X58, we managed to get a run on 1.15 V, whereas the Asus Rampage unnecessary 1.16 V-some of the differences to pass all tests. Uncore ran at 1.25 V in both cases.
Then, we went to 4 GHz (multiplier 30) CPU core speed, also known as ' easy ' stable overclock for most parts Extreme LGA1366 CPU. Both Asus boards is fine with 1.31 V here, while Gigabyte needed 1.32 V-again, the difference is small. In all three cases, the uncore runs at 1.3 V.
Finally, I tried 2.7 GHz (multiplier 33) CPU core speed, and it makes no sense. The voltage required to boot Windows and, at least so, run 2,010 bench CPU succeeded Sandra, varies between 1.42 V on the Rampage III and Gigabytes, to 1.43 V about the P6X58D. As you can see, there is a voltage spike Giants needed here, with appropriate heat and improve power-not to mention the long-term reduction of age. So, I went back to 4 GHz with an ideal speed. Here are the results of the test, in this case on the Rampage III Extreme.
Gigabyte X58A-UD7 Mainboard
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