Bij AnandTech is een klein artikeltje verschenen waarin de packaging van geheugenmodules wordt behandeld. In de servermarkt is vaak veel geheugen nodig, terwijl er slecht een beperkte hoeveelheid ruimte beschikbaar is. Daarom zijn verschillende fabrikanten op zoek gegaan naar alternatieve methodes om meer chips op een geheugenreepje te kunnen stoppen. In het artikel wordt uitgelegd wat termen zoals Tape Carrier Packaging (TCP), Elevated Package Over CSP (EPOC) en Foldable Electronic Memory Module Assembly (FEMMA) inhouden. Hieronder een stukje over EPOC, Kingston's oplossing om tweemaal zoveel chips kwijt te kunnen:
The EPOC technology mounts DRAM chips in different packages in two overlapping rows on the printed circuit board. The top tier is a row of raised Thin-Small Outline Package (TSOP) memory chips, and the lower tier is a row of smaller Chip Scale Package (CSP) memory chips. There are no chip-level interconnects or physical contact between the two overlapping rows. With the EPOC technology, the two rows of memory chips are not in direct contact, thereby allowing airflow in-between the top and bottom chip rows for more effective heat dissipation.
Kingston designed EPOC to address three issues. They set out to eliminate the long lead-times required to stack memory chips when using third-party stacking companies. Such lead-times impact customer order shipments and can have significant financial impact when memory prices fluctuate. Kingston engineers also set a design objective requiring the new technology to be as easy to manufacture as standard modules. The final goal was to enhance thermal performance and overall reliability.
