JohnDR :
Honestly, I don't care too much about how much new motherboards cost, I care about whether the manufacturers were innovative enough to try something new, that other manufacturers didn't. Without innovation, PCIE 3.0 may never be widely used on AMD boards and we would all be stuck only having one option. At leadt now you can get an FM2+ board that has PCIE3.0. Why is it none of the other AMD 990 FX boards other than Sabertooth Gen 3 have PCIE 3.0 on their MB's? Because board manufacturers aren't innovative enough. Reward innovation and let the sky high prices on these "been there done that" motherboards fall through the floor!
There's a reason why nobody is geeking out over PCIe 3.0 on a 990FX chipset:
It's not real. The 990FX doesn't have PCIe 3.0,
it only has PCIe 2.0 When you put a PLX PCIe 3.0 bridge on a PCIe 2.0 controller, the system will see that the card sits on a PCIe 3.0 connection, but you'll still be limited to the bandwidth of the chipset's PCIe 2.0 controller.
The chipset has 32 lanes at PCIe 2.0. The bridge allows 16 lanes of PCIe 2.0 to split to 32-lanes. But the bridge itself is PCIe 3.0, so every card on the bridge will be seen by the system as having a PCIe 3.0 connection even though
bandwidth to and from the bridge is limited to PCIe 2.0 x16.
That means a single card can transfer at PCIe 2.0 x16 rates. Because SLI and CrossFire use the same data and it’s a repeater bridge (same data to multiple cards), two cards also get PCIe 2.0 x16 data rate.
So, what's the advantage of using a PCIe 3.0 bridge on a PCIe 2.0 controller? Because
PCIe 3.0 x8 has the same transfer rate as PCIe 2.0 x16, the bridge allows three-card (x16-x8-x8) and four-card (x8-x8-x8-x8) configurations to still have
PCIe 2.0 x16 bandwidth for each card, whereas a PCIe 2.0 version of this bridge would drop the transfer rate to PCIe 2.0 x8 per-card.
In other words, the benefits only apply to 3 and 4 card configurations. And even then, they're dubious.