- Joined
- Mar 27, 2005
- Location
- Fresno, CA
I'm not sure if this thread would fit better here or in the Intel Motherboard Section or even in the Power Supply section . . . But I figured it's most relevant to overclocking the i7 CPU. . .
To my knowledge, the EVGA Classified is one of the only motherboards that has 2 x 8pin CPU connectors . . .
I was pleasantly surprised to discover that my PCPn'P has an extra 8-pin connector that has never been used.
I am guessing that the PSU was originally designed for a dual CPU situation. But this would be a perfect chance to make full use of what my PSU offers. So I'm happy about that. . . .
But I wonder if that will actually yield any real world difference when overclocking. My only thought is that maybe it will keep the voltage a little stiffer and less prone to fluctuation.
Then I read this webpage which says that an 8-pin connector is already capable of 336W. The CPU is not likely to use more than 220W even under load at 4.0GHz. (See this article.)
However, I figure that by spreading the power across more PSU wires and more traces on the motherboard, this could result in greater stability. For example, when the CPU is using 220W, with a 8-pin connector, each power wire is delivering about 4.6 amps. This is about 50% of the maximum 7 amps per wire. With two 8-pin connectors on the Classified, each wire is carrying about 2.3 amps which drops things down to about 25% of the maximum 7 amps per wire.
By the way, I was really surprised to learn in this article that by overclocking the CPU to 4.0GHz, the result is using 50% more power to accomplish the same task when running stock!!
To my knowledge, the EVGA Classified is one of the only motherboards that has 2 x 8pin CPU connectors . . .
I was pleasantly surprised to discover that my PCPn'P has an extra 8-pin connector that has never been used.
I am guessing that the PSU was originally designed for a dual CPU situation. But this would be a perfect chance to make full use of what my PSU offers. So I'm happy about that. . . .
But I wonder if that will actually yield any real world difference when overclocking. My only thought is that maybe it will keep the voltage a little stiffer and less prone to fluctuation.
Then I read this webpage which says that an 8-pin connector is already capable of 336W. The CPU is not likely to use more than 220W even under load at 4.0GHz. (See this article.)
However, I figure that by spreading the power across more PSU wires and more traces on the motherboard, this could result in greater stability. For example, when the CPU is using 220W, with a 8-pin connector, each power wire is delivering about 4.6 amps. This is about 50% of the maximum 7 amps per wire. With two 8-pin connectors on the Classified, each wire is carrying about 2.3 amps which drops things down to about 25% of the maximum 7 amps per wire.
By the way, I was really surprised to learn in this article that by overclocking the CPU to 4.0GHz, the result is using 50% more power to accomplish the same task when running stock!!