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 DDR3 UDIMM with black chips, new condition

A-Tech

A-Tech 4GB DDR3 1866 ECC UDIMM 1Rx8 Server Memory

SKU CH-YMXR-KXDF4

4GB DDR3 1866 ECC UDIMM module with CL13 latency and 1.5V operation for server upgrades

  • Capacity4GB
  • SpeedDDR3 1866 (PC3 14900)
  • CAS LatencyCL13
  • Voltage1.50V
  • ECCYes
  • Buffered/RegisteredUnbuffered
  • ECC protection guards data integrity with built-in error correction
  • 1866 MHz DDR3 speed moves data quickly at PC3-14900 rate
  • CL13 latency keeps response tight for server workloads
  • 50 V standard voltage fits existing DDR3 platforms without changes
  • 240-pin UDIMM form factor slots into compatible HP 733036-581 systems

A-Tech 4GB DDR3 ECC UDIMM Server Memory

This A-Tech module provides 4GB of DDR3 1866 ECC unbuffered memory for compatible server and workstation systems. It operates at standard 1.50V with CL13 latency and uses a 1Rx8 configuration on a 240-pin DIMM form factor.

Replaces HP 733036-581 and E2Q91AA part numbers

The module serves as a direct equivalent for HP part numbers 733036-581 and E2Q91AA. The upgrade is worthwhile when your system requires ECC UDIMM memory at DDR3 1866 speed and has available DIMM slots for capacity expansion.

Verify your system supports DDR3 1866 ECC UDIMM

Check that your motherboard accepts unbuffered ECC DDR3 memory at this speed and rank configuration before ordering. Consult your system documentation for supported memory specifications and maximum capacity limits per slot.

Highlights

  • ECC protection guards data integrity with built-in error correction
  • 1866 MHz DDR3 speed moves data quickly at PC3-14900 rate
  • CL13 latency keeps response tight for server workloads
  • 50 V standard voltage fits existing DDR3 platforms without changes
  • 240-pin UDIMM form factor slots into compatible HP 733036-581 systems

Specifications

BrandA-Tech
Capacity4GB
SpeedDDR3 1866 (PC3 14900)
CAS LatencyCL13
Voltage1.50V
ECCYes
Buffered/RegisteredUnbuffered
Rank1Rx8
ChipsetMajor Brand Chipset
FeaturesMajor Brand Chips

Questions about this item

Will this 240-pin DDR3 UDIMM fit my HP server that uses part 733036-581?

Yes, it is a direct equivalent for HP part numbers 733036-581 and E2Q91AA and uses the standard 240-pin DDR3 DIMM form factor.

What is the correct way to install this ECC UDIMM and what step is often missed?

Power off the server, open the chassis, align the notch on the 240-pin module with the slot key, press firmly until both retention clips click, then verify in BIOS that ECC is enabled.

Does this 1.5 V DDR3 module need any firmware updates or battery replacements over its lifetime?

No firmware or battery maintenance is required; the module is validated for lifetime reliability and only needs replacement if a memory error appears in system logs.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.