Intel 5000 Series User Manual

System BIOS Intel® 5000 Series Chipsets Server Board Family Datasheet
Revision 1.1
Intel order number D38960-004
54
3.4.1 FBDIMM Open Loop Throughput Throttling
Memory throttling is a feature of the Intel 5000 sequence chipsets to prevent FBDIMM memory
from overheating. If the performance of the installed FB-DIMMs approaches their supported
thermal limit for a given platform, system BIOS will initiate memory throttling which manages
memory performance by limiting bandwidth to the DIMMs, therefore capping the power
consumption and preventing the DIMMs from overheating. Memory throttling can be minimized
by operating your platform in “Performance Mode” (default) which changes the system Fan
Control profile to run the system fans at higher speeds. Running the platform in “Acoustics
Mode” will cause the system fans to run slower to meet the acoustic limits for the given platform.
The System BIOS utilizes a Memory Reference Code (MRC) throttling algorithm to maximize
memory bandwidth for a given configuration when memory throttling is initialized. The MRC
code relies on Serial Presence Detect (SPD) data read from the installed DIMMs as well as
system level data as set through BIOS Setup Options and the FRUSDR Utility.
Power Property
Heat Spreader
Type
AMB Thermal
Limit
DRAM Type
DRAM Thermal
Limit
FBDIMM Inputs
(SPD bytes)
Trise
A
ltitude
Pitch
Fan Flow
Velocity
System Level Inputs
BIOS Setup & FRUSDR
+
BIOS MRC
Memory Throttle
Settings
System
Ambient

Intel 5000 Series Specifications

General

Brand	Intel
Model	5000 Series
Category	Server Board
Language	English