Specifications

Intel® Server Board S3420GPRX TPS Functional Architecture
Revision 1.1
Intel order number E92065-001
15
3.1.1 Intel
®
Xeon
®
3400 Processor
The Intel
®
Xeon
®
3400 Series processors highly integrated solution variant is composed of four
Nehalem-based processor cores.
 FC-LGA 1156 socket package with 2.5 GT/s.
 Up to 95 W Thermal Design Power (TDP); processors with higher TDP are not
supported.
The server board does not support previous generations of the Intel
®
Xeon
®
processors.
3.1.2 Intel
®
Turbo Boost Technology
Intel
®
Turbo Boost Technology is featured on certain processors in the Intel
®
Xeon
®
Processor
3400 Series. Intel
®
Turbo Boost Technology opportunistically and automatically allows the
processor to run faster 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 single-threaded workloads.
Intel
®
Turbo Boost Technology operation:
 Turbo Boost operates under Operating System control – It is only entered when the
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 is independent of the number of active cores.
 Maximum Turbo Boost frequency depends on the number of active cores and varies by
processor configuration.
 The amount of time the system spends in Turbo Boost operation depends on workload,
operating environment, and platform design.
If the processor supports the Intel
®
Turbo Boost Technology feature, the BIOS Setup provides
an option to enable or disable this feature. The default state is enabled.
3.1.3 Simultaneous Multithreading (SMT)
Most Intel
®
Xeon
®
processors support Simultaneous Multithreading (SMT). The BIOS detects
processors that support this feature and enables the feature during POST.
If the processor supports this feature, the BIOS Setup provides an option to enable or disable
this feature. The default is enabled.
3.1.4 Enhanced Intel SpeedStep
®
Technology
Intel
®
Xeon
®
processors support the Geyserville3 feature of the Enhanced Intel SpeedStep
®
technology. 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.