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Green 288-pin DDR4 server memory module with black chips

Kingston Technology Corp.

Kingston Technology Corp. KTH-PL421/16G 16GB DDR4 2133 ECC Registered server RAM

SKU CH-4JT1-ZMNSE MPN KTH-PL421/16G

16 GB DDR4 2133 ECC registered server memory for data-integrity workloads

  • Total capacity16 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • Buffer typeRegistered
  • Product type288-Pin DDR4 SDRAM
  • 16 GB capacity for high-density server workloads
  • DDR4 2133 speed rated at PC4 17000 bandwidth
  • ECC protection detects and corrects single-bit errors
  • Registered signal buffering improves stability in multi-DIMM configs
  • 288-pin DDR4 form factor fits standard server slots

16 GB DDR4 ECC registered server module

This 16 GB DDR4 module runs at 2133 MT/s and uses a 288-pin registered design with on-die error correction. It targets administrators upgrading or repairing enterprise servers that require registered ECC memory for data integrity. The stick is built to Kingston's qualified server specifications for reliable operation in multi-DIMM configurations.

Compatibility checklist before purchase

Verify that your server platform supports DDR4 registered ECC memory and accepts 288-pin DIMMs at the 2133 speed grade. Confirm the motherboard or system documentation lists PC4-17000 modules and that the memory controller can address 16 GB per slot. Check the maximum supported capacity per channel and the approved population rules for registered DIMMs.

Thermals noise and power in normal use

Registered DDR4 modules operate at standard JEDEC voltage and generate modest heat under typical server workloads. They are passively cooled by chassis airflow and add no audible noise of their own. Power draw scales with the number of populated slots and the memory controller load but remains within the platform's designed thermal envelope.

How it compares

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

Price $171.99
Typical for this category: the median of 6,523 items is $188.99.
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $10.75 per GB
Pricier than about 70% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameKingston
Model nameKTH-PL421/16G
Total capacity16 GB
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2133 (PC4 17000)
Memory
ECC supportYes
Buffer typeRegistered
Size & build
Shipping weight0.04 kg
Package size146 × 44 × 3 mm

Questions about this item

Does the KTH-PL421/16G module arrive alone or with additional hardware such as a heatsink?

The 16GB DDR4 2133 registered ECC DIMM ships as a single 288-pin module; no heatsink, bracket or extra accessories are included.

When would I pick this 16GB stick instead of a smaller or larger capacity?

Choose this 16GB DDR4 2133 registered ECC module when your server board has free 288-pin slots and you need to add 16GB per slot at the PC4 17000 speed grade.

What does the PC4 17000 rating tell me about real-world throughput?

PC4 17000 means the module runs at DDR4 2133 MT/s, delivering up to 17 GB/s of peak bandwidth per stick in a compatible registered ECC server platform.

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