Developed more than a year ago, the version 2.0 of PCI Express still raises some doubts among users. Apart from a bandwidth increase (the old maximum was doubled), what else can you expect from the new bus? Well the frequency stays at 100 MHz but what has been increased is the internal multiplier.

Both ATI/AMD and NVIDIA launched their first generation of PCI Express 2.0 compliant graphics cards several months ago: Radeon HD 3000 series and G92 (65nm). From that moment several complains were heard about compatibility with "old" motherboards. This looks like the manufacturers fault, because both a PCI Express 1.x device installed in a PCI Express 2.0 slot, and a PCI-E 2.0 device installed in a PCI-E 1.x slot, should work (at 1.x speeds).

The aforementioned doubling of the bandwidth will allow us to enjoy as much as there was available in those hard to see, because of their length, PCI-E x32 slots. And we will have it in the so much more convinient PCI-E x16 form factor.

Link: AnandTech.

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