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Old 03-31-11, 09:47 AM   #1
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Default intels next gen cpu to support pci-e 3.0

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Old 03-31-11, 10:00 AM   #2
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Default Re: intels next gen cpu to support pci-e 3.0

Intel Corp.'s next-generation microprocessor code-named Ivy Bridge will, among other things, support the next-generation PCI Express 3.0 interconnection, according to slides published by a web-site. Potentially, such support may catalyze designers of graphics processing units (GPUs) to introduce graphics chips with PCIe 3.0 support.

Even though Ivy Bridge will be a successor of the Sandy Bridge and will generally inherit its micro-architecture, it will sport a rather significant number of improvements. Firstly, it will have certain improvements that will boost its performance in general applications by around 20% compared to Core i "Sandy Bridge" chips. Secondly, the forthcoming chip will have a new graphics core with DirectX 11 and OpenCL 1.1 support as well as 30% higher performance compared to the predecessor. Thirdly, Ivy Bridge will feature PCI Express 3.0 x16 interconnection as well as PCIe 2.0 x4 controller, according to a slide published by SemiAccurate web-site.

The PCIe 3.0 specification extends the data rate to 8GHz and continues to support 2.5GHz and 5GHz signaling. Based on this data rate expansion, it is possible for products designed to the PCIe 3.0 architecture to achieve bandwidth near 1GB/s in one direction on a single-lane (x1) configuration and scale to an aggregate approaching 32GB/s on a sixteen-lane (x16) configuration. The new 128b/130b encoding scheme also allows near 100% efficiency, offering a 25% efficiency increase for 8GHz as compared to the 8b/10b efficiency of previous versions, which enables the doubled bandwidth. This evolutionary specification integrates a number of enhancements to the protocol and software layers of the architecture. These enhancements range in scope from data reuse hints, atomic operations, dynamic power adjustment mechanisms, latency tolerance reporting, loose transaction ordering, I/O page faults, BAR resizing and many more extensions in support of platform energy efficiency, software model flexibility and architectural scalability. PCIe 3.0 will be used in servers, workstations, desktop and mobile personal computers, embedded systems, peripheral devices and more.

PCI Express 3.0 will enable new classes of devices initially: even higher performance graphics cards for consumers as well as ultra high speed solid-state drivers for servers or workstation. Going forward other kind of electronics will also take advantage of PCIe 3.0.

Intel did not comment on the news-story.
Good news. It's nice that Ivy Bridge will offer OpenCL support. I'd really like to see more apps/games utilize OpenCL. Hopefully Intel really pushes for devs to support it. With OpenCL we may be able to see the full power of the IGP across a wide range of applications.
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Old 03-31-11, 02:31 PM   #3
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Default Re: intels next gen cpu to support pci-e 3.0

chart here shows sandy bridge EN pci e 3.0, kinda confusing, whats the diff between sandy bridge E and ivy bridge?

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Old 03-31-11, 04:02 PM   #4
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Default Re: intels next gen cpu to support pci-e 3.0

Accorded to Intel leaked chipset roadmap, Sandy Bridge E chipset will use new X79 that will replace X58 but X79 will not have PCI Express 3.0 support. It been rumoured for months that Sandy Bridge E expected to be the first high end CPU to support PCI Express 3.0 but now the roadmap showed that it only supported PCI Express 2.0.

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