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 printed circuit board with black memory chips and gold edge connectors, 240-pin DDR3 DIMM form factor

HP Refurbished

HP 713985-B21-R 16GB DDR3 1600 Registered Server RAM

SKU CH-MTX7-YKK60 MPN 713985-B21-R

16 GB registered DDR3-1600 server memory with CL11 latency for HP systems

  • Total capacity16 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Buffer typeRegistered
  • Product type240-Pin DDR3 SDRAM
  • 16 GB capacity supports large server workloads
  • Registered DDR3 1600 delivers stable data transfer
  • CL11 latency reduces access delay for critical tasks
  • 240-pin DDR3 SDRAM fits compatible server slots
  • HP 713985-B21-R model ensures genuine HP quality

16GB Registered DDR3 1600 Module

This HP 713985-B21-R module provides 16GB of DDR3 SDRAM rated at 1600 MT/s (PC3 12800) with a CAS latency of CL11. It uses a 240-pin form factor and registered buffering for signal integrity. The part is designed for compatible HP ProLiant and Apollo server platforms requiring registered memory.

Registered ECC for Multi-DIMM Servers

This memory suits administrators expanding or repairing DDR3-era servers that mandate registered ECC DIMMs for capacities beyond a few modules per channel. Workstations and desktops that accept only unbuffered non-ECC memory cannot use this module. Buyers needing unbuffered DIMMs or a different DDR generation should look elsewhere.

CL11 Latency at 1600 MT/s

The CL11 timing at the 1600 MT/s data rate determines compatibility with the memory controller's supported speed bins and rank population rules. Verify the server's qualified vendor list to ensure this latency and registered organisation are accepted for the intended slot configuration.

How it compares

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

Price $45.99
Cheaper than about 85% of the 6,523 comparable items (median $188.99).
Total capacity 16 GB
Lower than about 60% of the 6,064 comparable items (median 32 GB).
Price per GB $2.87 per GB
Cheaper than about 90% of the 6,064 comparable items (median $7.25 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 name713985-B21-R
Total capacity16 GB
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1600 (PC3 12800)
Memory
CAS latencyCL11
Buffer typeRegistered
Size & build
Shipping weight0.45 kg
Package size254 × 203 × 127 mm

Questions about this item

Does the 16GB DDR3 1600 registered module hit any thermal or bandwidth ceiling during sustained server workloads?

The module runs at DDR3 1600 (PC3 12800) with CL11 latency; registered buffering stabilises the signal under continuous load, and the rated speed is the sustained limit.

How much heat or power does a 16GB stick add when the server runs 24/7?

Standard DDR3 1600 registered DIMMs draw low power per module; the registered design keeps signal integrity without extra heat beyond typical server memory envelopes.

What motherboard slot and chipset features must I already have to install this 240-pin DDR3 registered memory?

You need a server board with 240-pin DDR3 slots that support registered (buffered) DIMMs; consumer boards that accept only unbuffered memory will not work.

More in ECC Server RAM

Similar items