DIMM Adaptor Card for Empty Slot Effect
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Solution Overview
Problem
In computing devices, partially populated DIMM slots can lead to reduced performance due to the 'empty slot effect,' where an empty slot negatively impacts the transfer rate of a populated DIMM, causing it to run at lower speeds.
Innovation Solution
A DIMM adaptor card that can be removable and configured to couple with either one or two DIMMs, allowing for flexible configuration to eliminate the empty slot effect by switching between different adaptor cards based on the desired configuration of 1 DPC or 2 DPC, thereby maintaining high transfer rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a DIMM slot is left empty, then device complexity is reduced, but transfer rate deteriorates significantly
Solution Approach 1:
The patent introduces an adaptor card as an intermediary component that couples between the memory controller and the DIMM module. This adaptor card includes impedance-matching circuitry and signal conditioning elements that mediate the electrical connection, allowing the DIMM to operate at full speed even when the slot is effectively under-utilized. The adaptor acts as a buffer that compensates for the impedance mismatch caused by empty slots.
Solution Approach 2:
The patent employs impedance matching networks and signal conditioning circuits that dynamically adjust electrical parameters (impedance, signal amplitude, timing) to optimize signal integrity. By changing these electrical parameters through the adaptor card, the system maintains high transfer rates regardless of slot population configuration.
2Speed
If multiple DIMMs are installed in all slots, then transfer rate is maximized, but adaptability deteriorates
Solution Approach 1:
The adaptor card is designed with multi-functionality to handle different configuration scenarios. It can be used with 1 DIMM, 2 DIMMs, or serve as a standalone impedance-matching device. The universal design allows users to maintain optimal performance across various population configurations without requiring different hardware solutions for each scenario.
Solution Approach 2:
The system enables dynamic reconfiguration by allowing the adaptor card to be installed or removed based on the desired configuration. This dynamic approach provides versatility, as users can adapt the system to different needs (1 DPC or 2 DPC configurations) while maintaining high transfer rates in each scenario through the adaptor's signal conditioning capabilities.
3Speed
If an adaptor card is introduced, then transfer rate is maintained in partially populated slots, but device complexity increases
Solution Approach 1:
The patent extracts the impedance-matching and signal conditioning functionality from the main memory controller into a separate, dedicated adaptor card. This extraction isolates the complexity into a modular component that can be added only when needed (in partially populated configurations), while leaving the main system simple for fully populated configurations. The adaptor card self-contained design minimizes the impact on overall system complexity.
Data Source
AI summary
Apparatuses and processes associated with a dual in-line memory module (DIMM) adaptor card. Specifically, the DIMM adaptor card may be configured to removeably couple with a slot of a printed circuit board (PCB). The DIMM adaptor card may further be configured to removeably couple with a first DIMM and a second DIMM. Other embodiments may be described and/or claimed.