DIMM Remote Voltage Sensing for Power Optimization
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Solution Overview
Problem
Information handling systems face challenges in optimizing memory performance and power efficiency due to shrinking voltage and tolerance ranges in dual in-line memory modules (DIMMs), requiring efficient voltage regulation across varying configurations and workloads.
Innovation Solution
The system employs a remote-sensing method using a system management bus with analog-to-digital conversion capability to measure and digitize voltages at DIMMs, allowing the test module to adjust voltage regulators to optimize output voltages based on load conditions, thereby enhancing performance and power management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If memory capacity and bandwidth are increased by adding more memory channels and ranks, then memory performance is improved, but power consumption increases
Solution Approach 1:
The patent implements dynamic voltage adjustment where the voltage regulator continuously monitors memory device performance and adjusts output voltage in real-time based on actual load conditions and device characteristics, transitioning from static to dynamic voltage regulation to optimize power consumption while maintaining required performance levels
Solution Approach 2:
The system changes voltage parameters dynamically by adjusting the output voltage of the voltage regulator based on measured memory device characteristics and operational conditions, allowing optimization of power consumption by delivering only the necessary voltage levels required for each specific memory configuration and workload
2Reliability
If voltage is increased to improve memory performance, then operational margins are improved, but power consumption increases
Solution Approach 1:
The patent employs a feedback mechanism where the voltage regulator monitors memory device performance metrics and adjusts output voltage accordingly, creating a closed-loop system that maintains adequate operational margins while avoiding excessive voltage application that would increase power consumption unnecessarily
Solution Approach 2:
The system transitions from fixed voltage operation to dynamic voltage adjustment, where the voltage level is continuously adapted based on real-time performance monitoring, allowing operational margins to be maintained at optimal levels without the penalty of consistently high voltage and associated power consumption
3Adaptability or versatility
If voltage regulators operate across wide power requirements, then adaptability to different configurations is improved, but efficiency decreases
Solution Approach 1:
The voltage regulator dynamically changes its output voltage parameters based on the specific memory configuration and operational requirements, adjusting voltage levels to match actual needs rather than operating at fixed high levels, thereby maintaining adaptability while reducing energy losses across different configurations
Solution Approach 2:
The system enables the voltage regulator to automatically adapt to different memory configurations through self-monitoring and self-adjustment mechanisms, eliminating the need for manual configuration while maintaining high efficiency by delivering voltage levels precisely matched to each configuration's requirements
Data Source
AI summary
A system includes a dual in-line memory module and a system board. The dual in-line memory module includes a plurality of dynamic random access memory devices, and a system management interface. The system management interface is configured to measure a first voltage provided to the dynamic random access memory devices, and configured to digitize the first voltage. The system board includes a test module and a voltage regulator. The test module is configured to receive the digitized first voltage via a connector pin between the dual in-line memory module and the system board, and configured to compare the first voltage to a first threshold voltage. The voltage regulator is configured to adjust a remote sense target voltage for the system management interface when the first voltage is less than the first threshold voltage.