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Green rectangular circuit board with black memory chips and gold edge connectors

SK hynix

SK hynix HMT451U7BFR8A-PB 4GB DDR3 1600MHz ECC Unbuffered CL11 1.35V server RAM

SKU CH-MGB1-V2Y13

4GB DDR3 ECC server memory running at 1600MHz with CL11 latency and low 1.35V operation

  • ECC protection safeguards data integrity in server workloads
  • 35 V operation lowers power draw versus standard DDR3
  • 1600 MHz speed delivers 12 800 MB/s bandwidth for responsive performance
  • Single-rank design keeps electrical load light for stable operation
  • 240-pin DIMM fits standard DDR3 server memory slots

4 GB DDR3 ECC unbuffered module

This 4 GB DDR3 module runs at 1600 MHz with a CL11 latency and 1.35 V operating voltage. It uses a 240-pin DIMM form factor and presents a single-rank 1Rx8 organisation. Error-correcting code is built in for data integrity.

Suits HP servers needing ECC unbuffered DDR3

Buyers who need registered or load-reduced memory should look elsewhere, as this module is unbuffered only. Systems that require 1.5 V standard-voltage DDR3 cannot use this 1.35 V part. Capacity per slot is fixed at 4 GB.

1.35 V low-voltage DDR3 specification

The 1.35 V rating is the single spec that decides fitment; the motherboard must explicitly support this voltage level. If the platform only accepts 1.5 V DDR3, the module will not function correctly.

How it compares

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

Price $21.99
Cheaper than about 94% of the 6,523 comparable items (median $188.99).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

No published specifications for this item yet.

Questions about this item

Will the ECC function on this 4 GB DDR3 module require any firmware updates or periodic reconfiguration during its service life?

ECC operates in hardware with no firmware updates or reconfiguration needed; the module simply detects and corrects single-bit errors as long as it remains seated in the 240-pin slot.

What is the first limit reached when this CL11 1600 MHz DIMM runs at full load continuously?

The CAS latency of 11 cycles at 1.25 ns per cycle sets the timing boundary; sustained throughput cannot exceed the PC3-12800 data rate of 1600 MT/s.

How much heat and power does the 1.35 V 4 GB stick produce when installed in a server running 24/7?

At 1.35 V the module draws less power than standard 1.5 V DDR3, so heat output stays low and typical server airflow is sufficient for continuous operation.

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