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VIA VX855 Media System Processor: Bringing 1080p HD Video to Power Efficient SFF and Mobile Devices

This product is available fully ROHS-compliant.

The VIA VX855 Media System Processor (MSP) is a power efficient, highly integrated all-in-one chipset that addresses the key requirements of today's small form factor and mobile PC systems.

For the first time, the VIA VX855 MSP offers full hardware acceleration of the widest variety of leading video standards including H.264, MPEG-2/4, and WMV9, allowing smooth playback of high bit-rate 1080p HD video. The advanced video decoding capabilities, when coupled with the media system processor's small physical size and a thermal design power (TDP) of a mere 2.3 watts, open up exciting opportunities for power efficient small form factor and mobile devices; especially the mini-notebook PC segment that will now be able to offer true 1080p HD video playback.

Additionally, support for all leading operating systems including the forthcoming Microsoft® Windows 7 OS offers flexibility and greater applicability to a wide spectrum of established, growing and new x86 market segments.

The VIA VX855 MSP integrates all the cutting-edge features of a modern chipset's North and South bridges into a 27mm x 27mm single chip package that saves over 46% of silicon real estate compared with competing twin-chip core logic implementations. This miniaturization, combined with extensive power management technologies and the VIA VX855's ability to run fanlessly, enables system builders to design ever smaller, lighter, and more portable systems.

VIA Chrome logo

Key Features of the VIA VX855 MSP
  • Chrome® High Performance 2D/3D Graphics: The VIA Chrome® 9 HCM 3D integrated graphics core boasts full DirectX 9.0 support and a 128-bit 2D engine with hardware rotation capability

  • Powerful Video Decoding Technology: The VIA Chromotion™ video engine delivers a Hi-Def™ visual experience, including advanced video acceleration for  H.264, MPEG-2, MPEG-4, and WMV9, video formats, plus a VMR-capable HD video processor

  • Advanced HD Audio: The built-in VIA Vinyl HD Audio controller supports up to eight high definition channels with a 192kHz sampling rate, delivering a richer all-round digital media experience

  • Intuitive Memory Technology: VIA's renowned memory controller technology supports up to two low-power, high-bandwidth DDR2 memory modules

  • Display Flexibility: An integrated multi-configuration, single-channel LVDS transmitter enables display connection to embedded panels, as well as CRT and CMOS LCD monitors

  • Consumer Electronics Interfaces: Supports the low power device interfaces of SDIO, UART and SPI, as well as up to six USB 2.0 ports.

Block Diagram

Key Specifications of the VIA VX855 MSP

Supported Processors 

  • VIA Nano® / C7® / Eden® processor
  • 400 - 800MHz FSB speed
Memory Controller 
  • Up to DDR2 800
  • Supports up to two 64-bit DDR2 DIMM slots (4 GB max) 
  • Supports 16-bit dedicated display frame buffer (optional)
Storage Interface Support
  • Support SD/MS/MMC/XD
Peripheral Interface
  • Six USB2.0 ports
  • One USB2.0 device port 
  • Supports LPC bus
  • Supports SDIO, SPI and UART
Integrated 2D/3D/Video Processor
  • VIA Chrome® 9 HCM DX9 3D engine 
  • 128-bit 2D engine with hardware rotation capability 
  • High Definition video processor with VMR capability 
  • Up to 512 MB frame buffer
Display Interface 
  • Three 10-bit 350 MHz RAMDACs 
  • Single - channel LVDS 
  • 18-bit TTL
Unified Video Decoding Processor 
  • MPEG-2/H.264 VLD hardware decoding acceleration 
  • MPEG-4, and VC1 video decoding acceleration
High Definition Audio Interface 
  • Supports up to 32-bit sample depth at 192 kHz sampling rate 
  • Supports three codecs and eight streams 
  • Supports HD modem
Video Capture Port  
  • One 16-bit input or 
  • One 8-bit TS input + one Serial TS input or 
  • CCIR656/601 input + one Serial TS input
Supported Software Standards
  • Microsoft® DirectX 9.0, 
  • Microsoft® Windows XP and Vista, Win CE and Linux
Power Management 
  • ACPI 3.0 and PCI Bus Power Management 1.1 compliant 
  • Snapshot extensive system power management 
  • Flip-Chip Ball Grid Array (FCBGA) 
  • Package Size: 27 x 27mm/0.8mm
Core Voltage 
  • 1.2V


VIA VX855 press release
VIA VX855 image kit

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If you should have problems or questions setting up or running your VIA product, we offer comprehensive technical support here and you can find the latest device drivers, as well as helpful forums to discuss and solve your problems.

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