New cost-effective DDR5 memory 'HUDIMMs' show about 50% lower throughput with a single subchannel — Two HUDIMMs are as fast as a single stick of regular DDR5 RAM

HKEPC, with Asus support, simulated HUDIMM DDR5 by disabling one subchannel and testing it on an Intel Core Ultra 9 285K system.

The results showed roughly 45% to 49% lower read, write, and copy bandwidth versus standard dual-subchannel DDR5.

Latency stayed nearly unchanged, so the main tradeoff is much lower throughput rather than slower response time.

HUDIMM aims to cut DDR5 costs by using fewer memory chips, but buyers may have to weigh savings against a major performance drop.