• Welcome to TechPowerUp Forums, Guest! Please check out our forum guidelines for info related to our community.

Rambus Unveils Industry-First Complete Chipsets for Next-Generation DDR5 MRDIMMs and RDIMMs

btarunr

Editor & Senior Moderator
Staff member
Joined
Oct 9, 2007
Messages
47,252 (7.54/day)
Location
Hyderabad, India
System Name RBMK-1000
Processor AMD Ryzen 7 5700G
Motherboard ASUS ROG Strix B450-E Gaming
Cooling DeepCool Gammax L240 V2
Memory 2x 8GB G.Skill Sniper X
Video Card(s) Palit GeForce RTX 2080 SUPER GameRock
Storage Western Digital Black NVMe 512GB
Display(s) BenQ 1440p 60 Hz 27-inch
Case Corsair Carbide 100R
Audio Device(s) ASUS SupremeFX S1220A
Power Supply Cooler Master MWE Gold 650W
Mouse ASUS ROG Strix Impact
Keyboard Gamdias Hermes E2
Software Windows 11 Pro
Rambus Inc., a premier chip and silicon IP provider making data faster and safer, today unveiled industry-first, complete memory interface chipsets for Gen 5 DDR5 RDIMMs and next-generation DDR5 Multiplexed Rank Dual Inline Memory Modules (MRDIMMs). These innovative new products for RDIMMs and MRDIMMs will seamlessly extend DDR5 performance with unparalleled bandwidth and memory capacity for compute-intensive data center and AI workloads.

"The voracious memory demands of AI and HPC require the relentless pursuit of higher performance through continued innovation and technology leadership," said Sean Fan, chief operating officer at Rambus. "With our 30-plus years of renowned high-speed signal integrity and memory system expertise, the Rambus Gen5 RCD, and next-generation MRCD, MDB, and PMIC will be critical enabling chips in future-generation servers leveraging DDR5 RDIMM 8000 and MRDIMM 12800."



The new Rambus chips include:
  • The Gen 5 Registering Clock Driver (RCD), enabling RDIMMs operating at 8000 megatransfers per second (MT/s).
  • The Multiplexed Registering Clock Driver (MRCD) and Multiplexed Data Buffer (MDB), enabling upcoming MRDIMMs running at speeds up to 12,800 MT/s by doubling the bandwidth of the DIMM beyond the native DRAM device speed.
  • The second-generation server Power Management IC (PMIC5030) designed for both DDR5 RDIMM 8000 and MRDIMM 12800, providing ultra-high current at low voltage to support higher speeds and more DRAM and logic chips per module.
Enabling flexible and scalable end-user server configuration, the DDR5 RDIMM 8000 and industry-standard MRDIMM 12800 utilize a common architecture with compatibility across server platforms. The DDR5 RDIMM 8000 chipset includes the Gen 5 RCD, PMIC5030, Serial Presence Detect (SPD) Hub and Temperature Sensor (TS) chips. The DDR5 MRDIMM 12800 chipset includes the MRCD and MDB, as well as the same PMIC5030, SPD Hub and TS chips utilized in the RDIMM 8000.

The DDR5 MRDIMM 12800 employs a novel and efficient module design that boosts data transfer rates and system performance by multiplexing two ranks of DRAM, effectively interleaving the two data streams. This allows the host memory bus to run at twice the data rate of the native DRAM devices, thus increasing bandwidth while using the same physical connections of DDR5 RDIMMs. This requires an MRCD that can address the two ranks of DRAMs on alternate clock cycles, as well as MDBs to direct the data stream to and from the correct DRAM devices. Each DDR5 MRDIMM 12800 requires one MRCD and ten MDB chips to multiplex the memory channel. The MRCD and MDB will also support a Tall MRDIMM form factor with four ranks of DDR5 DRAMs for double the capacity of a dual-rank RDIMM in a cost-effective manner.

The Gen 5 RCD, MRCD, MDB and PMIC5030 are part of the growing Rambus portfolio of industry-leading memory interface and power management solutions including Gen1 to Gen 4 RCD, Client Clock Driver (CKD), Server PMIC, SPD Hub, and TS chips.

View at TechPowerUp Main Site
 
Joined
May 3, 2018
Messages
2,881 (1.20/day)
I would like to see Zen 7 supporting native 12800 MT/s memory. Might be enough bandwidth for the 11950X.
 
Joined
Oct 17, 2021
Messages
37 (0.03/day)
System Name Nirn
Processor Amd Ryzen 7950X3D
Motherboard MSI MEG ACE X670e
Cooling Noctua NH-D15
Memory 128 GB Kingston DDR5 6000 (running at 4000)
Video Card(s) Radeon RX 7900XTX (24G) + Geforce 4070ti (12G) Physx
Storage SAMSUNG 990 EVO SSD 2TB Gen 5 x2 (OS)+SAMSUNG 980 SSD 1TB PCle 3.0x4 (Primocache) +2X 22TB WD Gold
Display(s) Samsung UN55NU8000 (Freesync)
Case Corsair Graphite Series 780T White
Audio Device(s) Creative Soundblaster AE-7 + Sennheiser GSP600
Power Supply Seasonic PRIME TX-1000 Titanium
Mouse Razer Mamba Elite Wired
Keyboard Razer BlackWidow Chroma v1
VR HMD Oculus Quest 2
Software Windows 10
rambus is still around?
 
Top