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Via samples C7 desktop chipset
Dec. 12, 2005

Via is sampling the first chipset for its new C7 series desktop processors. The CN700 IGP chipset features 533MHz frontside (processor) and memory buses, built-in Unichrome graphics, a variety of media interfaces, and a low-power design, the company says.

Via announced its C7 desktop and C7-M mobile chip lines in May. The chips were expected to begin shipping from a IBM fabrication facility using 90nm silicon-on-insulator process technology in Q2, 2005.

In August, Via announced its VN800 chipset for the C7-M mobile processor. The VN800 has a unique twist -- it can be used with either the C7-M or Intel's Pentium M, Via says, letting laptop makers keep their options open.

The new CN700 chipset for Via's C7 desktop chips includes a CN700 northbridge, along with a VT8237A southbridge -- the same southbridge used in the VN800 mobile chipset.

The CN700 northbridge features a 533MHz frontside (processor) bus, along with a DDR and DDR2-compatible memory bus supporting speeds up to 533MHz. It has built-in Unichrome graphic, along with an AGP port for offboard chipsets and an HDTV interface.


Via's CN700 desktop chipset uses the same southbridge as its VN800 mobile chipset

Claimed features include:
  • Supports up to 2GB DDR2 533/400MHz or DDR400/333/266MHz SDRAM
  • 533 MB/sec 8-bit V-Link Host Controller supporting V-Map modular architecture
  • Chromotion CE video display engine
  • MPEG-2 decoder
  • Video de-blocking
  • Adaptive de-Interlace
  • DuoView+
  • Full HDTV support up to 1080i / 720p
  • Integrated UniChrome Pro Graphics
  • Optimized unified memory architecture (UMA)
  • 200MHz graphics engine clock with separated 128-bit data paths
  • 128-bit 2D and 3D Graphics engine
  • 12-bit DVI transmitter
  • 24-bit flat panel display interface and dual 12-bit flat panel display interface
  • 12-bit interface to external TV encoder for SDTV and HDTV display
  • Support for VIA Vinyl Gold 8-channel HD audio controller & integrated VIA Vinyl 6-channel HD audio
  • Serial ATA support for up to 4 devices
  • Integrated V-RAID 0, RAID 1, and RAID 0+1*, and JBOD (SATA) support
  • Parallel ATA133/100/66 support for up to 4 devices
  • Support for up to 8 USB 2.0/USB 1.1 ports
  • Support for VIA Velocity gigabit Ethernet companion controller & Integrated 10/100 fast ethernet
  • Advanced system power management support

VP of product marketing Chewei Lin said, "The CN700 [could] enable a new generation of ultra low power, quiet, compact, stylish, and ultra reliable devices."



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