Intel Vig390s - Manual (Page 11)

Vig390s Motherboard Manual V1.0 10
System Processor
The VIG390S motherboard supports a single or dual Pentium Xeon™ processor.
The processor’s VID pins automatically program the voltage regulator on the
motherboard to the required processor voltage. In addition, the front side bus speed
is automatically selected. The motherboard currently supports processors that run
internally up to 3.6GHz and have a 512 KB second-level cache and 1MB third-level
cache.
The Intel Xeon™ processor incorporates Intel NetBurst® Microarchitecture with 800
MHz system bus, Internet Streaming SIMD Extensions 3, Intel Hyper-Threading
Technology hardware support for multi-threaded applications and Intel’s Extended
Memory 64-bit technology (EM64T).
The processor also implements MMX™ technology and maintains full backward
compatibility with the 8086, 80286, Intel386 ™, Intel486 ™, Pentium, Pentium Pro,
Pentium II & Pentium III processors. The processor’s numeric coprocessor
significantly increases the speed of floating-point operations and complies with
ANSI/IEEE standard 754-1985.
Microprocessor Packaging
The Xeon™ processor comes in a micro PGA 604 package that connects to the
motherboard through a socket 604 connector. The package consists of:
• Processor card including the processor core and the second-level and third level
cache, burst pipelined synchronous static RAM (BSRAM) and tag RAM.
• Thermal plate.
Second Level Cache
The second-level cache is located on the die of the CPU itself. The cache includes
burst pipelined synchronous static RAM (BSRAM) and tag RAM. All supported
onboard memory can be cached.
Processor Upgrades
The motherboard can be upgraded with an Intel Xeon™ processor that runs at
higher speeds with a maximum of 3.6GHz.