[citation][nom]DRosencraft[/nom]I understand where the3dsgeek is coming from. The problem with building stuff like this so far out into the future sometimes is that it takes what can seem like an eternity for the useful hardware to catch up. Enterprise will love this because they do virtually everything through PCI and can never get it done fast enough. But most people here are consumers, and the consumer sector has limited use for PCIe 3.0 at this point, such that even talking about 4.0 seems at least a little early, if not ridiculous. I mean, if you're an AMD fan, they don't even have a MB with 3.0 on it yet. And the benefit of 3.0 for the latest gen. of GPUs is not that terrific. As for consumer SSDs on PCIe, most don't take full advantage of 2.0, let alone touch 3.0, and are so wildly expensive that few people seem to give a care for them at all. It is nice to have these sorts of upgrades planned out, but increasingly we are seeing that they come out farther and farther in advance of any actually useful means of implementation. So, if you're a consumer now, you end up buying hoping that a use will come along now, or you end up paying a premium, even if only slightly, for the sake of having a newer/higher standard that no one will have any meaningful use for. But, 2015 is 3 years away, and the first implementations probably wont be until 2016, so maybe things will change faster than they have been of late.[/citation]
OCZ has two PCIe 3.0 enterprise PCIe SSDs that are very fast. One breaks 7.2GB/s and the other breaks 6GB/s, the faster one has 12TB of flash and the slower one has 16TB. Considering that many (perhaps most?) servers use PCIe x8, not x16, so these SSDs could be severely bottle-necked if they were limited to PCIe 2.0 instead of 3.0, their version of PCIe. There are also PCIe 3.0 RAID cards, networking cards, and more in addition to the fact that more keep coming out. Furthermore, as others have stated, new PCIe versions are also paramount for improvements in motherboard hardware. More bandwidth for motherboard makers and chipset makers to work with helps them give us better hardware and connectivity with the motherboards.
Beyond that, PCIe 3.0 can help cards such as the Radeon 7970 somewhat when in CF with only PCIe x8 (or worse) per card when PCIe 2.0 is compared to it.
[citation][nom]the3dsgeek[/nom]i get it man, but all i am saying is that they are introducing PCIe 4.0, but there isn't hardware available in the market which can take full advantage of PCIe 2.0. By the time we'll be able to take advantage of PCIe 3.0, they will introduce PCIe 5.0. Evrytime we will be paying more money for the technology we don't need "yet".[/citation]
There are many cards that saturate PCIe 2.0 and that's a fact that you should have looked up before making such a statement. Beyond that, PCIe needs to constantly improve to make sure that it doesn't become a bottle-neck during its lifetime. The whole point of being a step ahead is to not get caught with consequences related to getting behind.
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