Details of ValleyView Atom CPUs

Next year Intel is going to transition Atom processors to 22nm microarchitecture, codenamed Silvermont. New Atoms will be aimed at embedded, entry-level mobile and entry-level desktop markets, and they will replace previous generation of 45nm Bonnell chips and current generation of 32nm Saltwell CPUs. Details of Silvermont processors were published today by, who discovered a leaked Intel document on Baidu website.

"Silvermont" Atom products will be offered as a part of Bay Trail platform, and they are going to be implemented as Systems on a Chip (SoC). Depending on the market, the Atoms will employ one of the four variations of ValleyView core: ValleyView-I for industrial applications, ValleyView-T for small devices, ValleyView-D for desktops and ValleyView-M for netbooks. The SoCs will be available with one, two and four CPU cores, with each CPU core having 512 KB L2 cache. Anticipated core frequencies for ValleyView chips range from 1.2 GHz to 2.4 GHz. The processors will support Intel 64, execute disable bit feature and virtualizaton.

Like older generations of Atoms, "ValleyView" SoCs will integrate graphics unit with video encoding/decoding capabilities. The GPU will sport four 7th generation graphics engines, that will offer 4x - 7x times better performance than GPU on E600 series Atoms. Additionally, the chips will incorporate VXD392 decode engine, and support acceleration of wide range of video formats, including decoding of VC1/WMV9, MPEG1, MPEG2, MPEG4 and H.264, and encoding of MPEG2, H.264, and VP8 formats. Decode rate will be fast enough to display 1080p video at 60 frames per second, and decoding will be mostly offloaded to the GPU, taking less than 3% of CPU resources for SD streams, and less than 5% for HD streams. Video encoding will be slightly slower, however it should be sufficient for 1080p video at 30 fps. On-chip display controller will include VGA, MIPI DSI, eDP/DP and HDMI interfaces.

ValleyView Atom CPUs will have either dual or single channel memory controller, supporting up to 8 GB of DDR3L-1066 or 1333 memory, or LPDDR2-800. Other on-chip components will include Intel HD or low-power audio, camera interface, image coprocessor, PCI-Express 2.0 interface, and security engine. Supported I/O interfaces include SATA 2, USB 2.0/3.0, SDIO, SPI, I2C, I2S and UARTs.

The processors will be manufactured in two types of packages, 27mm x 25mm Type-3, and 17mm x 17mm Type-4. Type-3 chips will support dual-channel DDR3L memory, 2 SATA ports, and Gigabit interface. When configured to run in a single-channel mode, Type-3 SoCs will support ECC memory. Some Type-3 parts will work in extended temperature range, and some SKUs will be qualified for auto applications. Type-4 chips will include power optimized feature set, such as support for single channel of LPDDR2 memory and single SATA port, and they will lack Gigabit interface.

According to the leaked document, the processors will be available in the forth quarter 2013.

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There are 3 comments posted

gpu arch?

2012-08-28 04:33:43
Posted by: earl camerron

sticking with powervr or moving to intel hd graphics

Re: powervr

2012-08-28 05:20:38
Posted by: Gonzales

Unfortunately, powervr has no x64 drivers, hence use less.

New "Ivy Bridge" graphics

2012-09-09 12:23:03
Posted by: Simon M

The Valleyview/Silvermont will have some sort of Ivy Bridge graphics, and may also contain quicksync for faster video encoding/decoding.

Finally there will be no more powervr :-)

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