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Green rectangular DDR3 DIMM with black chips and gold contacts

A-Tech

A-Tech 8GB DDR3 1866MHz ECC UDIMM 2Rx8 Server Memory

SKU CH-MC46-02Z4K

8GB DDR3 1866MHz ECC UDIMM with CL13 latency and 1.5V operation for server upgrades

  • Total capacity8 GB
  • Rated speedDDR3 1866 (PC3 14900)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL13
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • 8GB capacity adds memory headroom for virtualised workloads
  • DDR3 1866MHz speed accelerates data throughput in HP servers
  • ECC unbuffered design detects and corrects single-bit errors
  • 2Rx8 dual-rank organisation maximises density per DIMM slot
  • 5V standard voltage ensures broad DDR3 platform compatibility

8GB DDR3 ECC UDIMM for HP servers

This 8GB DDR3 1866MHz ECC unbuffered DIMM replaces HP part numbers 733736-001 and 708635-B21. It targets administrators upgrading compatible HP server or workstation platforms that require registered ECC memory. The single module delivers 8GB capacity at standard 1.5V operation.

CL13 latency at continuous throughput

Rated at PC3-14900 with CAS latency 13, the module maintains specified timing under sustained server workloads rather than only in brief bursts. ECC circuitry corrects single-bit errors on the fly, preserving data integrity during extended compute sessions. The 2Rx8 organisation supports stable operation across all populated slots.

240-pin installation with compatibility check

The 240-pin DIMM seats in standard DDR3 UDIMM slots without tools; alignment key prevents reverse insertion. Builders must verify the system supports unbuffered ECC DDR3 at 1866MHz and the exact HP part numbers listed, as registered or non-ECC variants will not function. No additional configuration is required beyond BIOS recognition.

How it compares

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

Price $33.99
Cheaper than about 89% 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 $4.25 per GB
Cheaper than about 79% 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 name733736-001, 708635-B21
Total capacity8 GB
Performance
Rated speedDDR3 1866 (PC3 14900)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL13
ECC supportYes
Buffer typeUnbuffered
Memory rank2Rx8
Power
Rated voltage1.5 V

Questions about this item

How much power does this 1.5 V DDR3 1866 module draw under continuous server load?

It operates at the standard DDR3 voltage of 1.50 V; actual power draw depends on the platform and workload but the module is rated for 1.5 V operation.

What must my motherboard provide to run this 240-pin ECC UDIMM?

A DDR3 DIMM slot that accepts 240-pin unbuffered ECC modules at 1.5 V and supports 1866 MT/s (PC3-14900) speeds.

Can I mix this 2Rx8 CL13 stick with other DDR3 ECC UDIMMs of different rank or speed?

Mixing ranks and speeds is possible if the motherboard supports it; the system will typically run all modules at the lowest common speed and timings.

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