Feature VIA K8T900 VIA K8T890 VIA K8T800 Pro VIA K8T800 VIA K8M890 VIA K8N890 VIA K8M800 K8N800A
North Bridge                
Processor Support AMD Athlon™64, Athlon™64FX & Sempron™ processors AMD Athlon™64, Athlon™64FX & Sempron™ processors AMD Athlon™64, Athlon™64FX & Opteron™ processors AMD Athlon™64, Athlon™64FX & Opteron™ processors AMD AthlonT64, AthlonT64FX & OpteronT processors AMD AthlonT64, AthlonT64FX & OpteronT processors AMD Athlon™64, Athlon™64FX & Opteron™ processors AMD Turion™ 64, Mobile AMD Athlon™ 64, Mobile AMD Sempron™ processors
Front Side Bus 1GHz/16-bit HyperTransport Bus Link 1GHz/16-bit HyperTransport Bus Link 1GHz/16-bit HyperTransport Bus Link 800MHz/16-bit HyperTransport Bus Link 1GHz/16-bit HyperTransportT Bus Link 1GHz/16-bit HyperTransportT Bus Link 800MHz/16-bit HyperTransport Bus Link 800MHz/16-bit HyperTransport Bus Link
Bus Architecture Asynchronous Asynchronous Asynchronous Synchronous Synchronous Synchronous Synchronous Synchronous
Memory Support DDR memory controller integrated directly into processor* DDR memory controller integrated directly into processor* DDR memory controller integrated directly into processor* DDR memory controller integrated directly into processor* DDR memory controller integrated directly into processor* DDR memory controller integrated directly into processor* DDR memory controller integrated directly into processor* DDR memory controller integrated directly into processor*
External Graphics

PCI Express Dual x 8 or PCI Express x16

PCI Express x16 AGP8X/4X AGP 8X/4X PCI Express x16 PCI Express x16 AGP8X/4X N/A
Integrated Graphics N/A N/A N/A N/A VIA Chrome9™ HC IGP VIA Chrome9™ HC IGP VIA UniChrome™ Pro IGP VIA UniChrome™ Pro IGP
PCI Express Peripheral Support 4 PCI Express x1** 4 PCI Express x1 N/A N/A PCI Express x1 PCI Express x1 N/A N/A
Video/Display N/A N/A N/A N/A

HDTV output DuoView + HDTV output

HDTV output DuoView + HDTV output

MPEG2 decoder HDTV output

MPEG2 decoder HDTV output
North / South Bridge Link

Ultra V-Link (1066MB/s)

Ultra V-Link (1066MB/s)

Ultra V-Link (1066MB/s)

8X V-Link (533MB/s)

Ultra V-Link (1066MB/s)

Ultra V-Link (1066MB/s)

8X V-Link (533MB/s)

8X V-Link (533MB/s)

*Please refer to AMD validated AMD64 Processor Compatible DDR Memory Modules
**When configured for Dual x 8 PCI Express mode, there are 3 PCI Express x1 high speed peripheral connections available.