I'm planning for an Intel 3930 on an Asus Sabertooth X79, with two GTX 680's in SLi. Here's what I've heard.
Currently, the GTX 680 is not supported at PCIe 3.0 speeds on X79 motherboards.
NVidia says it's in the process of certifying some X79 motherboards for 8 GT/s speeds, and Ivy Bridge will be Intel's first native PCIe 3.0 chipset.
Intel's Sandy Bridge E datasheet says the processor is 'capable of up to PCI Express 8.0 GT/s', and has two x16 lanes. On the website, Intel lists the chips as PCIe 2.0.
So, if the CPU and some motherboards are capable of 3.0 speeds, what makes it not native?
Does the X79 chipset not support the speed, and the motherboard manufacturers get around this with some electronics trickery? If so, will this extra link in the chain become a liability once 3.0 speeds are used? Or if SLi is used?
Or, is it some other new PCIe 3.0 thing, besides speed, that the X79 won't support?
In other words, is X79 3.0 not equal to Native 3.0?
Currently, the GTX 680 is not supported at PCIe 3.0 speeds on X79 motherboards.
NVidia says it's in the process of certifying some X79 motherboards for 8 GT/s speeds, and Ivy Bridge will be Intel's first native PCIe 3.0 chipset.
Intel's Sandy Bridge E datasheet says the processor is 'capable of up to PCI Express 8.0 GT/s', and has two x16 lanes. On the website, Intel lists the chips as PCIe 2.0.
So, if the CPU and some motherboards are capable of 3.0 speeds, what makes it not native?
Does the X79 chipset not support the speed, and the motherboard manufacturers get around this with some electronics trickery? If so, will this extra link in the chain become a liability once 3.0 speeds are used? Or if SLi is used?
Or, is it some other new PCIe 3.0 thing, besides speed, that the X79 won't support?
In other words, is X79 3.0 not equal to Native 3.0?