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 circuit board with black memory chips and gold contacts

A-Tech

A-Tech 4GB DDR4 2400MHz ECC RDIMM 1Rx8 Server Memory 809078-581

SKU CH-R778-FA93M

4GB DDR4 2400MHz ECC registered DIMM for HP servers with CL17 latency and 1.2V operation

  • Total capacity4 GB
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • ECC protection prevents data corruption with registered DDR4 design
  • 2400 MHz speed handles server workloads at PC4-19200 bandwidth
  • 20 V operation matches DDR4 standard voltage for efficiency
  • 1Rx8 single-rank layout fits 288-pin DIMM slots in HP systems
  • Replaces HP part numbers 809078-581 and 852260-001 directly

A-Tech 4GB DDR4 2400MHz ECC RDIMM

This A-Tech module is a 4GB DDR4 2400MHz ECC Registered DIMM built for server and workstation systems. It serves administrators and IT professionals who need validated replacement memory for specific HP platforms. The registered buffer and error-correcting code support data integrity in multi-module configurations. It is not suited for desktop PCs that require unbuffered non-ECC memory.

4GB capacity with CL17 latency at 1.20V

The single 4GB rank (1Rx8) runs at DDR4 2400 (PC4-19200) with CAS latency 17 at the standard 1.20 volts. This capacity handles light virtualization hosts, edge appliances, and legacy application servers comfortably. Workloads such as large in-memory databases or dense virtualisation clusters will exhaust the 4GB limit quickly. The module uses major-brand chips tested to A-Tech quality standards.

288-pin DDR4 DIMM form factor

The stick conforms to the 288-pin DDR4 DIMM mechanical specification for direct installation in compatible server slots. No extra cables, brackets, or software utilities are bundled with the module. Compatibility must be verified against the system's qualified vendor list before purchase. Buyers needing heat spreaders, RGB lighting, or consumer overclocking profiles should look elsewhere.

How it compares

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

Price $17.99
Cheaper than about 96% of the 6,523 comparable items (median $188.99).
Total capacity 4 GB
Lower than about 95% of the 6,064 comparable items (median 32 GB).
Price per GB $4.50 per GB
Cheaper than about 77% 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 nameA-Tech
Product lineCompatible Replacement for HP
Model name809078-581, 852260-001
Total capacity4 GB
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL17
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Power
Rated voltage1.2 V

Questions about this item

Will this DDR4 2400MHz ECC RDIMM run alongside my existing DDR4 2400MHz registered modules?

Mixing modules of the same DDR4 2400 speed and registered ECC type is generally supported, but the system will operate all modules at the lowest common speed and voltage (1.2V). Verify your server's memory population rules for 1Rx8 rank configuration.

How can I confirm the 4GB 1Rx8 module is detected and running at PC4-19200 with ECC active?

Enter the server BIOS or UEFI and check the memory information screen: it should show 4GB per module, 2400 MT/s (PC4-19200), registered ECC enabled, and the correct 1Rx8 organisation.

Does the 288-pin DDR4 RDIMM arrive as a single 4GB stick, or are brackets or cables included?

The box contains one 288-pin DDR4 2400MHz ECC RDIMM 1Rx8 module (4GB). No brackets, cables, or additional accessories are included.

More in ECC Server RAM

Similar items