Doggett, MichaelMeißner, MichaelKanust, UrsA. Kaufmann and W. Strasser and S. Molnar and B.- O. Schneider2014-02-062014-02-0619991-58113-170-41727-3471https://doi.org/10.2312/EGGH/EGGH99/007-014In this paper we present a low-cost memory architecture running at 100 MHz which is suited for any PCI-based volume rendering accelerator using the ray-casting approach. Current SDRAM technology, parallel access to all voxels required for trilinear interpolation, a cubic addressing scheme, and a buffering mechanism accommodating memory latency are applied to achieve high frame-rates. A total of four off-the-shelf standard DIMM modules are required enabling up to 9 Hz (averaged over a representative set of views) for datasets of 2563 voxels, using early ray termination as the only algorithmic optimization. The presented memory architecture is a good balance of cost versus feasibility on a standard PC1 card - accepting data replication - and will be used for the VIZARD II ray casting accelerator.B.3.2 [Memory Structures]Design StyleAssociative andcache Memories1.3.1 [Computer Graphics]Hardware ArchitectureGraphics Processors1.3.3 [Computer Graphics]Picture/ Image GenerationDisplay Algorithms