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Green printed circuit board with gold edge connector and black memory chips

HP

HP 672631-B21 16GB DDR3 1600 ECC Registered memory upgrade

SKU CH-PVAQ-S07R7 MPN 672631-B21

16 GB DDR3 1600 ECC registered module with CL11 latency for ProLiant SL250s Gen8 servers

  • Total capacity16 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Buffer typeRegistered
  • Memory rank2Rx4
  • Product type240-Pin DDR3 SDRAM
  • 16 GB DDR3 1600 capacity for demanding server workloads
  • ECC registered design detects and corrects memory errors
  • CL11 CAS latency delivers responsive data access
  • 240-pin DDR3 form factor fits compatible ProLiant SL250s Gen8 servers
  • 2Rx4 rank organisation optimises signal integrity on registered channels

HP 16GB DDR3 1600 Registered ECC Memory

This 16GB DDR3 module runs at 1600 MT/s with CL11 latency. It is built as a 2Rx4 registered DIMM with ECC for data integrity. The kit targets HPE ProLiant SL250s Gen8 base 2U left and right tray servers.

Thermals Noise and Power in Normal Use

Registered DDR3 DIMMs draw modest power and run within standard JEDEC voltage limits. Error-correcting logic adds negligible heat during typical server workloads. No active cooling is required beyond normal chassis airflow.

What This Replaces or Upgrades From

The module replaces lower-capacity or non-ECC DDR3 DIMMs in compatible SL250s Gen8 trays. The jump is worth it when workloads demand maximum registered capacity per slot and ECC protection. It is not for systems that require unbuffered memory or a different DDR generation.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $135.99
Cheaper than about 63% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $8.50 per GB
Typical for this category: the median of 20,941 items is $8.19 per GB.

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameHP
Model name672631-B21
Total capacity16 GB
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1600 (PC3 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Size & build
Shipping weight0.05 kg
Package size165 × 51 × 13 mm
Compatibility
Compatible systemsDesigned For:
HPE ProLiant SL250s Gen8 Base 2U Left Tray Server, SL250s Gen8 Base 2U Right Tray Server

Questions about this item

How do I install the 240-Pin DDR3 module in the ProLiant SL250s Gen8 tray server, and what step is often missed?

Align the notch on the 240-Pin DDR3 module with the slot key, press firmly until both retention clips click, then verify the registered ECC module is recognised in the BIOS memory map.

What maintenance or replacement will the 16GB registered ECC kit need later?

The 16GB DDR3 1600 CL11 module has no moving parts; replacement is only required if a memory error appears in the system event log or a capacity upgrade is planned.

What limit appears first when the 2Rx4 registered memory runs under sustained load?

The CL11 latency at DDR3 1600 (PC3 12800) sets the timing ceiling; sustained throughput cannot exceed the rated 12800 MB/s per module.

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