[ GLOSSARY DEFINITION ] Memory GDDR5X A faster GDDR5 variant. Also known as: GDDR5X VRAM Full Definition & Technical Explanation GDDR5X — A faster GDDR5 variant.This memory term is part of the CompareTech technical dictionary and helps you read specifications, comparisons, and benchmark data across its device database.See also: LPDDR5T GDDR3. Related Technical Terms GDDR3 An older graphics memory generation. Memory LPDDR5T A faster LPDDR5X variant. Memory ← All Glossary Terms How We Score → ← Previous Term Next Term →