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Four green DDR4 memory modules with gold contacts, no heat spreaders

Kingston Technology Corp.

Kingston Technology Corp. KVR21R15D4K4/64I 64GB (4 x 16GB) DDR4 2133 ECC Registered server RAM

SKU CH-ZXJV-VAGVE MPN KVR21R15D4K4/64I

64GB kit of four 16GB DDR4 2133 ECC registered modules at 1.20V with CL15 timing

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2133 (PC4 17000)
  • CAS latencyCL15
  • Memory timings15-15-15
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • ECC protection maintains data integrity with registered DDR4 design
  • 64 GB total capacity across four 16 GB modules
  • DDR4 2133 speed rated at PC4 17000 bandwidth
  • CL15 latency with 15-15-15 timing for responsive operation
  • Low 1.20 V voltage reduces server power draw

Server Memory Kit

This Kingston ValueRAM kit provides 64GB of DDR4 capacity across four 16GB registered DIMMs. It is built for servers and workstations that require error-correcting memory for data integrity.

Registered ECC Requirement

The modules use registered ECC DDR4 at 2133 MT/s with CL15 timing and 1.20V operation. Systems without registered ECC support or those needing unbuffered memory cannot use this kit.

Sustained Operation

Registered buffering reduces electrical load on the memory controller during continuous workloads. ECC correction maintains data accuracy over long periods without a heat spreader.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $473.99
Pricier than about 70% of the 6,523 comparable items (median $188.99).
Total capacity 64 GB (4 × 16 GB)
Higher than about 70% of the 6,064 comparable items (median 32 GB).
Price per GB $7.41 per GB
Typical for this category: the median of 6,064 items is $7.25 per GB.

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Specifications

Product
Brand nameKingston
Product lineValueRAM
Model nameKVR21R15D4K4/64I
Total capacity64 GB (4 × 16 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
CAS latencyCL15
Memory timings15-15-15
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.2 V
Size & build
Shipping weight0.45 kg
Package size152 × 76 × 25 mm

Questions about this item

Does my motherboard need 288-pin DDR4 slots to use this 64GB kit?

Yes, the kit uses 288-pin DDR4 SDRAM modules; your server board must provide DDR4 DIMM slots that accept registered ECC memory.

Can I add these CL15 registered modules to a system that already runs CL17 unbuffered DDR4 2133?

Registered and unbuffered DIMMs cannot be mixed; the memory controller will not initialise both types together.

How do I confirm the kit runs at DDR4 2133 with 15-15-15 timings after installation?

Enter the BIOS or use a tool like CPU-Z; the SPD should show 2133 MT/s, CL15-15-15 at 1.20 V.

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