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Rambus introduces HBM4E memory controller achieving 4.1 TB/s bandwidth for AI accelerators
Thursday, March 5, 2026 at 12:33 AM
Rambus has unveiled a new HBM4E memory controller IP designed to handle data transfer speeds of up to 4.1 TB/s per integrated circuit. This technology provides a 60% performance increase compared to standard HBM4, targeting high-performance AI accelerators and data center infrastructure that require massive memory bandwidth.
Context
Rambus has announced the industry's first HBM4E memory controller IP, a critical infrastructure component designed to manage next-generation high-bandwidth memory for AI accelerators and GPUs. This new controller achieves a breakthrough bandwidth of 4.1 TB/s per memory device, representing a 60% performance increase over standard HBM4 solutions. By supporting speeds of up to 16 Gbps per pin, the technology addresses the massive data throughput requirements of generative AI training and high-performance computing (HPC) workloads. This release reinforces the market leadership of Rambus in the silicon IP sector, building on a portfolio of over 100 HBM design wins. As the semiconductor industry shifts toward HBM4 and HBM4E standards to overcome memory bottlenecks, this controller provides a low-latency path for chip designers to integrate faster memory stacks. The solution is expected to be a key enabler for AI hardware arriving in the 2026-2027 timeframe.
Sources (8)
Rambus Sets New Benchmark for AI Memory Performance with ...Rambus Sets New Benchmark for AI Memory Performance with Industry-Leading HBM4E Controller IPRambus Sets New Benchmark for AI Memory Performance with Industry-Leading HBM4E Controller IPRambus launches HBM4E memory controller IP for AI chipsWe Can't Get Enough HBM, Or Stack It Up High EnoughHBM undergoes major architectural shakeup as TSMC and GUC detail HBM4, HBM4E and C-HBM4E — 3nm base dies to enable 2.5x performance boost with speeds of up to 12.8GT/s by 2027 | Tom's HardwareHBM4 Sticks With Microbumps, Postponing Hybrid BondingRambus turns HBM4E up to 16Gbps per pin
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