Motherboard:
  Thunder K8QW (S4881) for 4P
  Thunder K8QW (S4881) + M4881 for 8P

Motherboard
 • TYAN Thunder K8QW ( S4881): supports four
     AMD Opteron™ 800 series processors
 • SSI EEB (13" x 16")

CPU Board
 • TYAN M4881: supports four AMD Opteron™
     800 series processors (13" x 12")

Processor Compatibility
 • Support four or eight AMD Opteron™ 800 series
     processors; supports single/dual core

Chipset
 • NVIDIA nForce™ Pro 2200 + AMD-8131™ Hyper
     Transport PCI-X tunnel
 • Winbond W83627HF Super I/O chip
 • ADT7468 Hardware monitor IC

System Memory
 • 128-bit dual channel (interleaved) memory bus
 • Total of 32 DDR DIMM sockets (four per CPU)
    - 16 sockets on S4881
    - 16 sockets on M4881
 • Support up to 64/128GB* registered DDR
 • Supports Single, Dual, & Quad Rank memory
     modules; supports DDR 266/333/400 memory
 • Supports ECC with CHIPKILL technology

* 128GB is only supported via S4881 + M4881
     combination

Expansion Slots
 • Two x16 PCI Express slots, one with x4 signal
 • Two independent 64-bit PCI-X bus
 • One 64-bit 133 MHz (3.3V) PCI-X slot
 • Two 64-bit 100 MHz (3.3V) PCI-X slots

Server Management
 • Automatic system fan speed control
 • Chassis intrusion alert
 • Support Tyan Server Management (TSM)
 • Tyan SMDC, IPMI compliant
     remote server management kit (option)

Integrated LAN Controllers
 • Broadcom BCM5704C dual-channel GbE LAN
    - Two RJ-45 LAN connectors with LEDs
    - Connected to PCI-X Bridge A
 • Two Front Panel LED headers

Integrated PCI Graphics
 • ATI® RAGE™ XL PCI graphics controller
 • 8MB Frame Buffer of video memory

BIOS
 • Phoenix BIOS with 8Mbit LPC Flash ROM
 • Serial Console Redirect; USB device boot
 • ACPI 2.0 power management support

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Chassis

Enclosure
 • Convertible Pedestal and 19" rack-mountable
     5U chassis
 • Storage bay:
        - (4) 3.5" HDD SATA hot swap bays
        - (4) 3.5" Internal HDD bays
       Upgradeable to hot swap bays via add-on kit
        - (1) Slim CD-ROM bay
        - (1) Standard FDD bay
        - (3) 5.25" device bay
 • Dimension: 16.7" (W) x 26.8" (D) x 8.7" (H)
 • Dimension (mm): 425 (W) x 680 (D) x 220 (H)

Power Supply
 • EPS 12V, 4-way: 950W 2+1; 8-way: 1350W 3+1

Front Panel Feature
 • I/O: (2) USB 2.0 ports
 • LED indicators for Power, HDD Active, ID, & LAN
 • Switch: Power / Reset

Back I/O Ports
 • (1) keyboard & one PS/2 mouse port
 • (2) RJ45 GbE LAN ports with activity LEDs
 • Two USB 2.0 ports
 • One 9-pin UART serial port, one 15-pin VGA port

Storage Controller
 • Two dual-port SATA II controllers integrated in
     NVIDIA nForce Pro chip, supports up to four
     SATA-2 drives with RAID 0, 1, 0+1

System Cooling
 • 3 x 120*38mm DC Fans; 4 active CPU coolers

Regulatory
 • FCC Class A (Declaration of Conformity)
 • CE (Declaration of Conformity)