HMA84GR7CJR4N-RD - 32GB DDR4-2933 ECC RDIMM | SK hynix
MPN: HMA84GR7CJR4N-RD ✓ AktifHMA84GR7CJR4N-RD Ringkasan
A registered DIMM is a memory module that buffers the address and command signals through a register IC before they reach the DRAM devices, reducing electrical loading on the memory controller and allowing servers to populate more DIMM slots per channel than unbuffered memory allows. RDIMMs sit at the enterprise tier of the memory hierarchy: DDR4 SDRAM device -> module (RDIMM) -> server memory subsystem. ECC (Error Correcting Code) logic detects and corrects single-bit memory errors, which is mandatory for data integrity in servers, storage controllers, and mission-critical workstations.
Key features of the HMA84GR7CJR4N-RD include 32GB capacity built from 8Gb C-die DDR4 SDRAM devices packaged in 78-ball FBGA, x4 device organization for robust single-device-data-correction (SDDC) when paired with ECC-aware controllers, and a 2933 Mbps data rate at JEDEC-standard CL21 timing. The registered architecture lowers reflected-wave loading so a dual-socket server can carry 12 or more modules per system without signal integrity degradation.
Technically, the module uses a termination regulator and register on-board, runs at the 1.2V DDR4 core voltage, and complies with the DDR4 RDIMM mechanical standard: 288-pin, dual in-line, 1.18 inch (30 mm) height profile with gold-plated edge contacts. The 2Rx4 dual-rank organization interleaves row access between two physical ranks, improving effective bandwidth versus single-rank modules in multi-DIMM-per-channel servers.
Typical applications include HPE ProLiant and Dell PowerEdge server memory upgrades, virtualization hosts, database servers, and high-memory workstations that require ECC Registered DDR4. The module cross-references to OEM part numbers such as HPE P07646-B21 class SKUs used in validated server configurations.
Design consideration: never mix RDIMMs with LRDIMMs or UDIMMs in the same channel, and always verify the server memory population rules - matched ranks, speeds, and vendor-qualified DIMM lists determine the final achievable data rate, which may be derated from 2933 Mbps in mixed configurations.
This page adds value beyond the SK hynix datasheet by consolidating drop-in SK hynix RDIMM speed variants (2666/2933/3200 Mbps), distributor pricing context, and practical server population guidance in one AI-citable reference. Pricing data reflects available listings as of 2026-09-05.
Pilihan pengganti yang segera untuk HMA84GR7CJR4N-RD — sama paket, pin-pin kompatibel. Bahagian paket yang berbeza memerlukan kerja ulang PCB diasingkan.
Varietas dalam siri ini
Model serupa yang kompatibel dengan pengganti yang segera HMA84GR7CJR4N-RD (sama faktor bentuk dan kaki) — berbeza dalam Data Rate, ECC, Organization, Form Factor, Memory Type.
HMA84GR7CJR4N-WM
✅ Masuk Drop-In✗ Stok Habis
$230.6818 / Unit
Lihat Datasheet →HMA84GR7CJR4N-PB
✅ Masuk Drop-InHubungi untuk harga
Lihat Datasheet →HMA84GR7CJR4N-XN
✅ Masuk Drop-In✓ Ada di Stok
$377.3438 / Unit
Lihat Datasheet →HMA84GR7CJR4N-VK
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
HMA84GR7CJR4N-VKT3
✅ Masuk Drop-In📋 Alternatif rujukan (tidak dalam katalog)
HMA84GR7CJR4N-RD Spesifikasi
| Memory Capacity | 32 GB |
| Jenis Ingatan | DDR4 SDRAM RDIMM (Registered, ECC) |
| Kadar Data | 2933 Mbps (PC4-23466R) |
| Organisasi | 4G x 72 |
| Rank | Dual Rank (2Rx4) |
| DRAM Density per Device | 8Gb C-die |
| DRAM Package | FBGA 78-ball, x4 organization |
| Operating Voltage | 1.2 V |
| Kiraan Pin | 288 |
| Form Factor | 288-pin DIMM, 30 mm height |
| ECC | Yes (Error Correcting Code) |
| Registration | Registered (buffered address/command) |
| Bandwidth | 23466 MB/s per module |
| Compliance | JEDEC DDR4 RDIMM standard |
| Status RoHS | Compliant |
Panduan Konfigurasi Pin HMA84GR7CJR4N-RD fbga 78-ball, x4 organization
Konfigurasi pin untuk HMA84GR7CJR4N-RD (fbga 78-ball, x4 organization pakai). Penomeran pin, fungsi, dan garis bentuk koneksi ditakrifkan dalam dokumen pengeluar. Rujuk dokumen untuk kebentuk dan pedoman pengasman.
Tiada data garisan pin yang diperoleh untuk HMA84GR7CJR4N-RD.
Rujuk kepada lembaran data untuk konfigurasi pin penuh.
Aplikasi Biasa
HMA84GR7CJR4N-RD patut untuk 6 aplikasis: Enterprise Server Memory Upgrade, Virtualization Hosts, Database Servers, OEM Server Configurations (HPE/Dell), Storage Controllers and Appliances, High-Memory Workstations.
Enterprise Server Memory Upgrade
The HMA84GR7CJR4N-RD fits HPE ProLiant Gen10 Plus, Dell PowerEdge, and comparable dual-socket servers that accept DDR4-2933 ECC RDIMMs. Its registered architecture buffers address/command lines so up to 12 or more DIMMs per system can be populated without overloading the memory controller, while the 4G x 72 organization with x4 devices enables Single Device Data Correction for maximum uptime. At 23466 MB/s per module, mixed workloads gain headroom versus 2666 Mbps RDIMMs. Servers auto-derate to the slowest module in a channel, so populate matched modules per the OEM population table to hold the full 2933 Mbps bus speed.
Disebarkan
Virtualization Hosts
Hypervisor hosts (VMware ESXi, KVM, Hyper-V) benefit directly from the 32GB density and 2Rx4 dual-rank interleaving of the HMA84GR7CJR4N-RD: populating 12 slots yields 384GB per server, enough to oversubscribe dozens of VMs. The ECC Registered design corrects single-bit errors transparently and, with x4 device organization, tolerates an entire failed DRAM device through SDDC - critical for multi-week VM uptime. Its 2933 Mbps rate improves memory-intensive consolidation ratios over 2666 Mbps modules by roughly 10% bandwidth. Match ranks and speeds across channels per the platform QVL to avoid derating during POST training.
Disebarkan
Database Servers
In-memory and buffer-pool databases (SAP HANA-class workloads, Oracle, SQL Server) are latency- and bandwidth-bound, so the HMA84GR7CJR4N-RD's 2933 Mbps data rate and dual-rank interleaving measurably raise effective bandwidth per channel versus single-rank or 2666 Mbps modules. The 72-bit ECC bus plus x4 device organization provides the error containment databases demand - single-bit errors are corrected in-line, and full device failures are flagged for hot-spare/patrol scrub routines. At 32GB per DIMM, large buffer pools can be built without exhausting slots, leaving expansion headroom as the working set grows.
Disebarkan
OEM Server Configurations (HPE/Dell)
SK hynix RDIMM family members are resold by server OEMs under their own part numbers - for example, the HMA84GR7CJR4N-XN maps to HPE P07646-B21 in ProLiant DL345/DL360/DL365 Gen10 Plus and Apollo 6500 Gen10 Plus configurations. The HMA84GR7CJR4N-RD serves the same OEM BOM role at the 2933 Mbps validated speed. Using the original SK hynix MPN guarantees JEDEC-compliant timing tables, SPD data, and 8Gb C-die quality that OEM-qualified lists were validated against, eliminating the firmware-training surprises sometimes seen with third-party modules in locked-down server BIOSes.
Disebarkan
Storage Controllers and Appliances
Enterprise storage arrays, RAID controllers, and all-flash appliances use ECC Registered DDR4 as controller cache and metadata memory. The HMA84GR7CJR4N-RD's 72-bit ECC bus with x4 devices provides the SDDC fault containment storage firmware expects before battery-backed cache flush, while its 2933 Mbps rate shortens metadata lookups versus 2666 Mbps modules. Registered buffering is mandatory because storage controllers drive many DIMM slots from a single memory controller. RDIMM-only platforms cannot accept UDIMMs, so this module is one of the few electrically valid 32GB options for cache-slot upgrades.
Disebarkan
High-Memory Workstations
ECC-capable workstations (HP Z, Dell Precision, Lenovo P-series with Xeon W) that specify DDR4 RDIMM support accept the HMA84GR7CJR4N-RD for CAD, simulation, and AI-training workflows. Its 32GB capacity allows 4-module configurations of 128GB, and the 2933 Mbps rate feeds memory-hungry rendering and dataset preprocessing faster than consumer 2666 Mbps UDIMMs. The registered interface also reduces command-line loading at high population, which some workstation platforms exploit for 8-DIMM configurations. Verify the workstation's QVL supports 2933 Mbps RDIMMs; 3200-native boards can later be upgraded with the XN variant.
Disebarkan
Ringkasan Produk Disebarkan
Data referensi kejuruteraan untuk HMA84GR7CJR4N-RD — perbandingan, panduan rancangan, dan maklumat kesediaan
Panduan Pilihan
Perbandingan dengan Gantian
| Parametr | Produk Ini | HMA84GR7CJR4N-WM | HMA84GR7CJR4N-PB | HMA84GR7CJR4N-XN | HMA84GR7CJR4N-VK |
|---|---|---|---|---|---|
| Package | 288-pin RDIMM | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same | 288-pin RDIMM - same |
| Brand | SK hynix | SK hynix | SK hynix | SK hynix | SK hynix |
| Capacity | 32 GB | 32 GB | 32 GB | 32 GB | 32 GB |
| Data Rate | DDR4-2933 (PC4-23466R) | DDR4-2933 (PC4-23466R) | DDR4-2933 class | DDR4-3200 (PC4-25600R) | DDR4-2666 (PC4-21300) |
| Organization / Rank | 4G x 72, 2Rx4 | 4G x 72, 2Rx4 | 4G x 72, 2Rx4 | 4G x 72, 2Rx4 | 4G x 72, 2Rx4 |
| ECC | Yes | Yes | Yes | Yes | Yes |
| Operating Voltage | 1.2 V | 1.2 V | 1.2 V | 1.2 V | 1.2 V |
| DRAM Die / Device | 8Gb C-die, FBGA 78-ball x4 | 8Gb C-die, FBGA 78-ball x4 | 8Gb C-die family | 8Gb C-die, FBGA 78-ball x4 | 8Gb C-die family |
Penyeberangsung Jelas
- Highest speed in verified family at 2933 Mbps for Gen10-class platforms (vsHMA84GR7CJR4N-VK)
- Drop-in identical-speed replacement option (vsHMA84GR7CJR4N-WM)
- Forward-compatible upgrade path (vsHMA84GR7CJR4N-XN)
Catatan Desain
Never mix module types in one memory channel: RDIMMs (HMA84GR7CJR4N-RD) cannot be combined with LRDIMMs or UDIMMs, and most server BIOSes will refuse to POST or will lock the bus to a derated speed. When mixing speeds within the RDIMM family (e.g., RD with XN or VK), the entire channel trains to the slowest module - 2666 Mbps if a VK is present. Follow the server OEM memory population table: matched ranks, capacities, and speeds per channel preserve the full 2933 Mbps bus rate.
The 288-pin DDR4 RDIMM edge connector is keyed to prevent insertion of 240-pin DDR3 modules - do not force insertion. Handle modules by the edges and ground yourself before installation, because C-die DDR4 devices at 1.2V are sensitive to electrostatic discharge. For 30 mm-height modules, confirm chassis clearance: some dense 1U servers require VLP (very low profile) RDIMMs under 18.8 mm, and a full-height HMA84GR7CJR4N-RD may not fit under shrouds or riser cards.
Estimated: each DDR4 RDIMM draws roughly 3-5 W at 1.2V under typical load depending on access activity (based on standard DDR4 DRAM power estimation methodology, not a datasheet figure). A 24-DIMM dual-socket server can therefore budget 80-120 W for memory alone. Verify the platform VRM and airflow derating when populating all slots, and ensure chassis inlet air stays within the JEDEC module operating envelope to avoid DRAM refresh-rate throttling that reduces effective bandwidth.
Maklumat Kesediaan
DDR4 RDIMM suffix coding includes lead-free/halogen process designators per SK hynix naming convention; RoHS compliance is standard for the computing RDIMM line. Reach/halogen/conflict-minerals status not stated in provided data.
