We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green 240-pin DDR3L memory module with black chips, no heat spreader

HP

HP 647901-B21 16GB DDR3L 1333 ECC Registered Memory Upgrade

SKU CH-V9CQ-MNR2V MPN 647901-B21

16 GB DDR3L 1333 ECC registered DIMM for HPE ProLiant SL250s Gen8 servers

  • Total capacity16 GB
  • Rated speedDDR3L 1333 (PC3L 10600)
  • CAS latencyCL9
  • Rated voltage1.35 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • 16 GB DDR3L 1333 MHz capacity for high-density server workloads
  • Low-voltage 1.35 V DDR3L operation reduces power draw and heat
  • ECC registered design detects and corrects memory errors for data integrity
  • 240-pin DDR3 form factor fits HPE ProLiant SL250s Gen8 servers
  • CAS latency CL9 delivers responsive access times for virtualized environments

HP 16GB DDR3L 1333 ECC Registered Server Memory

This 16GB DDR3L module runs at 1333 MT/s with CL9 latency and 1.35V operation. It is built as 2Rx4 registered ECC memory for HPE ProLiant SL250s Gen8 left and right tray servers. The 240-pin form factor matches the platform's DIMM slots exactly.

Upgrade From Lower Capacity Or Non ECC Modules

The jump is worth it when virtualisation, large databases or high performance computing workloads demand greater capacity and error correction. HPE SmartMemory authentication unlocks extended performance features through the system ROM on Gen8 platforms. Systems without ECC support cannot use the registered buffer or error checking functions.

Installation Requires Matching Gen8 Server Tray

Insert the module into the correct DIMM slot for the left or right tray as specified by the server service guide. The registered design adds a clock cycle so the memory controller must support registered DIMMs. Mixing registered and unbuffered memory or using non HPE qualified modules will prevent the system from enabling SmartMemory features.

How it compares

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

Price $61.99
Cheaper than about 75% 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 $3.87 per GB
Cheaper than about 85% of the 20,941 comparable items (median $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 name647901-B21
Total capacity16 GB
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3L 1333 (PC3L 10600)
Memory
CAS latencyCL9
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Heat spreaderNo
Power
Rated voltage1.35 V
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

Does the 240-pin DDR3L module fit the HPE ProLiant SL250s Gen8 left and right trays?

Yes, the 240-pin DDR3L 1333 registered DIMM is designed for the HPE ProLiant SL250s Gen8 Base 2U left and right tray servers.

How do I install the registered ECC memory and what step is often missed?

Power down the server, open the chassis, align the notch on the 240-pin module with the slot key, press firmly until the ejector tabs click, then enable HPE SmartMemory features in the system ROM.

Will the 1.35 V DDR3L 16 GB modules need replacement under heavy virtualization loads?

HPE SmartMemory qualification and ECC error correction are built for sustained virtualization and cloud workloads; no scheduled replacement is required beyond standard server lifecycle policies.

More in Model-Specific Memory Upgrades

Similar items