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Green rectangular DDR3 ECC RDIMM module with black chips and gold contacts

A-Tech

A-Tech 8GB DDR3 1600 ECC RDIMM 1Rx4 server RAM 733020-581

SKU CH-R9J3-N11WK

8GB DDR3 1600 ECC registered DIMM with CL11 latency and 1.5V operation for HP 733020-581 servers

  • Total capacity8 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • 8GB capacity expands server multitasking headroom
  • DDR3 1600 MHz speed accelerates data throughput
  • ECC registered design protects critical workload integrity
  • 5V standard voltage ensures broad platform compatibility
  • 240-pin DIMM form factor fits DDR3 server slots

Server Memory Upgrade

This 8GB DDR3 1600 ECC RDIMM module is built for HP server and workstation platforms that require registered memory with error correction. It suits administrators expanding capacity in compatible systems using the 733020-581 part number.

Registered ECC Design

The registered buffer and ECC function reduce electrical load on the memory controller and correct single-bit errors, which helps maintain data integrity under sustained workloads. The 1Rx4 organisation and 1.5V operation match the original specification for supported HP platforms.

Straightforward Installation

The 240-pin DIMM fits standard DDR3 server slots; alignment is keyed so the module seats in one orientation. Issues usually arise when mixing registered and unbuffered DIMMs or when the system BIOS does not recognise the 1Rx4 density, so verify the qualified vendor list before adding this stick.

How it compares

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

Price $18.99
Cheaper than about 95% of the 6,523 comparable items (median $188.99).
Total capacity 8 GB
Lower than about 80% of the 6,064 comparable items (median 32 GB).
Price per GB $2.37 per GB
Cheaper than about 92% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for HP
Model name733020-581
Total capacity8 GB
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Power
Rated voltage1.5 V

Questions about this item

Will the registered ECC RDIMM require any firmware updates or periodic maintenance after installation?

No firmware updates or scheduled maintenance are needed; the module is a validated replacement for HP 733020-581 and runs at standard 1.5 V DDR3 voltage.

What thermal or power limit appears first when this 8 GB DDR3-1600 module runs continuously in a server?

The 1.50 V DDR3 standard voltage and CL11 timing define the power envelope; sustained loads stay within the JEDEC DDR3 spec for registered DIMMs.

How much heat and fan noise does this single-rank 1Rx4 RDIMM add when the system runs all day?

As a standard-voltage DDR3 registered DIMM it draws nominal power, so additional heat and acoustic impact are minimal in a properly cooled chassis.

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