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IntelP®P Server Board S3420GP TPS Functional Architecture
The server
3.1.2 Intel Turbo Boost Technology
Inte Boost certain processors in the Intel
®
Xeon
®
Processor
ster than the marked frequency if the processor is operating below power,
temperature, and current limits. This results in increased performance for both multi-threaded
and n
Intel
Turbo Boost Technology operation:
t operates under Operating System control – It is only entered when the
is independent of the number of active cores.
The amount of time the system spends in Turbo Boost operation depends on workload,
o
If th o
S Setup provides
an o
3.1. (SMT)
Mos t ts
le or disable
this The d
3.1.4 Enhanced In
®
Xeon
®
processors support the Geyserville3 feature of the Enhanced Intel SpeedStep
®
chnology. This feature changes the processor operating ratio and voltage similar to the
Thermal Monitor 1 (TM1) feature. The BIOS implements the Geyserville3 feature in conjunction
with the TM1 feature.
The BIOS enables a combination of TM1 and TM2 according to the
processor BIOS writer's guide.
3.2 Memory Subsystem
The Intel
®
Xeon
®
3400 series processor has an Integrated Memory Controller (IMC) in its
package. Each Intel
®
Xeon
®
3400 series processor produces up to two DDR3 channels of
memory. Each DDR3 channel in the IMC supports up to three DDR3 RDIMM slots or up to two
UDIMM slots. The DDR3 RDIMM frequency can be 800/1066/1333 MHz. DDR3 UDIMM
board does not support previous generations of the Intel
®
Xeon
®
processors.
®
l
®
Turbo Technology is featured on
3400 Series. Intel
®
Turbo Boost Technology opportunistically and automatically allows the
processor to run fa
si gle-threaded workloads.
®
Turbo Boos
operating system requests the highest (P0) performance state.
Turbo Boost operation can be enabled or disabled by BIOS.
Turbo Boost converts any available power and thermal headroom into higher frequency
on active cores. At nominal marked processor frequency, many applications consume
less than the rated processor power draw.
Turbo Boost availability
Maximum Turbo Boost frequency depends on the number of active cores and varies by
processor configuration.
perating environment, and platform design.
e pr cessor supports the Intel
®
Turbo Boost Technology feature, the BIO
ption to enable or disable this feature. The default state is enabled.
3 Simultaneous Multithreading
t In el
®
Xeon
®
processors support Simultaneous Multithreading (SMT). The BIOS detec
processors that support this feature and enables the feature during POST.
If the processor supports this feature, the BIOS Setup provides an option to enab
feature. efault is enabled.
tel SpeedStep
®
Technology
Intel
te
Revision 1.0
Intel order number E65697-003
15