Bulk Lot of 50 SK Hynix HMA81GR7CJR8N 8GB DDR4 ECC Registered RDIMM Server Memory Modules - Full Tray

• Brand: SK Hynix
• Part Number: HMA81GR7CJR8N
• Quantity: 50 modules (1 full tray - ideal for bulk upgrades, virtualization, or resale without sourcing headaches from multiple sellers)
• Capacity per Module: 8GB (total 400GB across the lot of 50)
• Type: DDR4 ECC Registered DIMM (RDIMM) - 1Rx8 configuration
• Speed (Dual Naming for Compatibility/Search):
  • Manufacturer (SK hynix label): DDR4-2666 / PC4-2666V
  • JEDEC Standard: PC4-21300V-R (equivalent bandwidth & registered spec)Both refer to the exact same performance: 2666 MT/s effective speed, ~21.3 GB/s peak bandwidth, fully registered for server stability.
• CAS Latency: CL19
• Voltage: 1.2V
• Pins: 288-pin
• Condition: Used - Pulled from decommissioned enterprise Dell PowerEdge servers, fully tested and guaranteed working. Clean, no bent pins, labels intact (sample photos shown; full tray will match).
• Compatibility: Perfect drop-in for Dell PowerEdge (R640, T640, R740, etc.), HPE ProLiant Gen10, Supermicro, Lenovo ThinkSystem, or any platform supporting DDR4-2666 / PC4-21300 ECC RDIMMs. Great for high-density server builds or spares.
• Warranty: 30 days DOA replacement or refund, tracked by serial numbers (provided on request or in shipment). We stand behind these matched pulls.
• Shipping: UPS Ground. Free shipping on this lot to make it easy for bulk buyers. Message for combined shipping on multiple lots (100+, 300+, etc.).
• Why This Lot?: DDR4 ECC server RAM prices are still climbing hard - grab a full, matched tray from one source instead of chasing 50 random singles with mismatched batches and higher risk. Serious volume buyers only - happy to provide test reports or more photos.