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technology18h ago
New cost-effective DDR5 memory 'HUDIMMs' show around 50% reduction in throughput with single subchannel — Two HUDIMMs are as fast as a single stick of regular DDR5 RAM
- HUDIMM tests show about a 50% bandwidth drop when using a single 32-bit subchannel on DDR5 RAM.
- With two HUDIMMs in dual-channel, bandwidth halves again, matching a single regular DDR5 stick’s performance.
- ASRock and ASUS notes suggest asymmetric dual-channel setups may offer modest gains despite overall penalties.
- The HUDIMM tests used taped memory modules to simulate HUDIMM behavior rather than actual retail HUDIMM kits.
- Latency remained roughly the same even as bandwidth dropped in HUDIMM configurations.
- HUDIMM aims to reduce chip counts per stick, potentially lowering cost for budget-focused buyers.
- Report notes HUDIMM is targeted at budget gamers and business users despite sharp performance penalties.
- The article clarifies the HUDIMM kit in testing was not a real retail product but a modified version for benchmarking.
- The coverage includes background context about DDR5 pricing trends and memory shortages driving interest in HUDIMM.
- Exclusives include testing by HKEPC with Asus and ASRock commentary on potential gains from mixed configurations.
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