No PCI-Express 3.0 Support For GTX 680 on Intel X79 Motherboards

Published: 23rd Mar 2012, 10:59 GMT

GeForce GTX 680 Release Driver Limits PCI-Express to Gen 2.0 on X79/SNB-E Systems | techPowerUp
NVIDIA decided to disable support for newest PCI-Express 3.0 interface on all X79 chipset motherboards. Decision was taked after the release of GeForce GTX 680, so there is still a support for PCIE 3.0 with drivers included with the cards.

Newest GeForce drivers 301.10 with WHQL do not have a support for PCI-Express 3.0, it was limited to 5GT/s which is PCIE 2.0). Only Ivy Bridge Core systems are now currently supporting PCI-Express 3.0. NVIDIA is currently working on a fix. There was no information why it was disbled, but it could cause some instability with X79 chipset.

GeForce GTX 680 supports PCI Express 3.0.
The Intel X79/SNB-E PCI Express 2.0 platform is only currently supported up to 5GT/s (PCIE 2.0) bus speeds even though some motherboard manufacturers have enabled higher 8GT/s speeds.

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