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Green rectangular DDR3 DIMM with black chips and gold contacts

A-Tech

A-Tech 8GB DDR3 1600MHz ECC RDIMM 2Rx4 Server Memory 47J0166 90Y3155

SKU CH-Q29Y-QJ9NE

8GB DDR3 1600MHz ECC registered server DIMM with 2Rx4 organisation for IBM-Lenovo systems

  • Total capacity8 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • 8GB capacity expands server memory headroom
  • DDR3 1600MHz speed accelerates data throughput
  • ECC RDIMM technology protects against data corruption
  • Registered 2Rx4 design supports dense configurations
  • 5V standard voltage ensures broad compatibility

Server memory upgrade

This 8 GB DDR3 registered DIMM is built for servers and workstations that require error-correcting memory. It replaces IBM-Lenovo part numbers 47J0166 and 90Y3155 and runs at 1600 MHz with CL11 latency. The module suits administrators who need reliable capacity expansion in compatible systems.

Registered DIMM compatibility

The 240-pin DDR3 form factor fits slots that support registered ECC memory at 1.5 V. A system must accept 2Rx4 organisation and PC3-12800 speed for this module to function. It frees standard unbuffered slots for other uses while providing the signal integrity required by multi-socket platforms.

Sustained workload stability

ECC circuitry detects and corrects single-bit errors during continuous operation, preventing data corruption in long-running tasks. The major-brand chipset and 1.50 V standard voltage maintain consistent timing under load. Testing validates reliability for extended duty cycles in server environments.

How it compares

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

Price $20.99
Cheaper than about 94% 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 $2.62 per GB
Cheaper than about 91% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineCompatible Replacement for IBM-Lenovo
Model name47J0166, 90Y3155
Total capacity8 GB
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank2Rx4
Power
Rated voltage1.5 V

Questions about this item

Does the CL11 CAS latency become the bottleneck during sustained server workloads?

CL11 at DDR3 1600 sets the access timing; sustained throughput will be limited by this latency figure combined with the registered buffer.

How much heat does the 1.5 V registered DIMM produce when running continuously?

The module operates at standard 1.5 V DDR3 voltage; registered DIMMs of this type typically draw a few watts per stick under full load.

Must my system already support ECC RDIMM 2Rx4 240-pin DDR3 to use this module?

Yes — the motherboard must accept DDR3 ECC registered DIMMs in a 240-pin slot and be configured for 2Rx4 organisation.

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