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Hynix hmt451s6bfr8 a-pb 4 GB DDR3L 1600 MHZ ECC Key Module (DDR3L, PC/Server, 204-Pin SO-DIMM, 1 x 4 GB)
SK Hynix

Hynix hmt451s6bfr8 a-pb 4 GB DDR3L 1600 MHZ ECC Key Module (DDR3L, PC/Server, 204-Pin SO-DIMM, 1 x 4 GB)

Bottom line: The SK Hynix Hynix hmt451s6bfr8 a-pb 4 GB DDR3L 1600 MHZ ECC Key Module: Exact SK Hynix part number HMT451S6BFR8A-PB for matching original memory; main trade-off: only 4 GB per module, too little for modern multitasking.

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By , Founder & Editor-in-Chief · Listing data updated

Mike Perry — Hardware researcher since 2014. For retro PC hardware and period-correct parts, synthesises manufacturer documentation, community compatibility lists and marketplace listings rather than first-hand lab testing. Core beat: GPU performance across gaming, rendering, and local-LLM inference.

Pros & Cons

Pros

  • ✓ Exact SK Hynix part number HMT451S6BFR8A-PB for matching original memory
  • ✓ Low-voltage DDR3L at 1.35V
  • ✓ PC3L-12800 speed (1600 MHz) with CL11 timings
  • ✓ Single-rank 204-pin SO-DIMM suits compact boards and older chipsets

Cons

  • ✗ Only 4 GB per module, too little for modern multitasking
  • ✗ Listing mentions ECC; check whether your board needs ECC or non-ECC
  • ✗ DDR3L is a legacy standard and will not fit DDR4 or DDR5 slots
  • ✗ SO-DIMM form factor will not fit full-size desktop DIMM slots

Manufacturer description

The SK Hynix HMT451S6BFR8A-PB is a 4 GB DDR3L SO-DIMM for when you need to swap in a memory stick that matches the original part number exactly, rather than guessing at a generic module. It is a single 4 GB module rated at 1600 MHz (PC3L-12800). Timings are CL11 with a 1.5 ns cycle time, and it runs at the low-voltage 1.35V that DDR3L specifies. This 204-pin module fits SO-DIMM slots, the small form factor used in many notebooks, mini PCs, all-in-ones and compact server boards. It is a single-rank design, which some older chipsets handle more reliably than dual-rank sticks. The listing also…

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SpecPicks Verdict

SpecPicks scored SK Hynix Hynix hmt451s6bfr8 a-pb 4 GB DDR3L 1600 MHZ ECC Key Module using a rating × review-volume × price-fit model applied to published specs and reviews across the memory & ram category. SK Hynix's memory & ram lineup sits within the broader category mid-tier; price and specs are the deciding factors over brand loyalty here. Judge it on the specification table and the price rather than on sentiment: check the figures that decide your use case, then put it side-by-side with two or three close alternatives in the Compare tool before clicking through.

Common buyer scenarios for memory & ram of this kind: matching it to an existing build, replacing a failing part, or upgrading from a previous-generation equivalent. Check the spec table below against your current setup — particularly socket / form-factor / power-rating fields — and confirm compatibility on the retailer's listing before purchase. Prices and stock are set by the retailer and may have moved since this page was last updated.

Frequently Asked Questions

Will the SK Hynix HMT451S6BFR8A-PB work in my laptop?

It is a 204-pin DDR3L SO-DIMM running at 1600 MHz and 1.35V. It fits systems that take DDR3L SO-DIMM memory. Check your laptop or motherboard manual for supported speeds and voltages before you buy.

Is this memory module ECC or non-ECC?

The listing describes it as ECC, but the detailed spec sheet only lists capacity, speed, CL11 timing, single rank and 1.35V. If your system needs one type specifically, confirm with the manufacturer or seller.

What are the speed and timing specs?

The module is rated at 1600 MHz (PC3L-12800) with CAS latency 11 and a 1.5 ns cycle time. It is a single-rank module that runs at 1.35V.

Can I use this with a 1.5V DDR3 system?

This module is rated for 1.35V DDR3L. Whether a board that expects standard 1.5V DDR3 will accept it depends on the board, so check your system's memory support list or ask the manufacturer.

Key Features

  • Hynix HMT451S6BFR8A-PB. Component for: PC/server.
  • Internal memory: 4 GB.
  • Memory layout (modules x size): 1 x 4 GB.
  • Internal memory type: DDR3L.
  • Memory frequency: 1,600 MHz..Memory element: 204-pin SO-DIMM..ECC.

Full Specifications

BrandSK Hynix
Voltage1.35 volts
RAM Size4 GB
Model NameHMT451S6BFR8A-PB
Unit Count1 Count
Form FactorSO-DIMM
Memory Speed1600 MHz
Model NumberHMT451S6BFR8A-PB
CompatibilityPC
Number of Pins204
Internal memory4 GB.
Mfr Part NumberHMT451S6BFR8A-PB
Memory frequency1,600 MHz..Memory element: 204-pin SO-DIMM..ECC.
Memory GenerationDDR3L
Compatible DevicesPC/server
Data Transfer Rate1600 MHz
Memory Form FactorSODIMM
Additional FeaturesEcc
Computer Memory Size4 GB
Internal memory typeDDR3L.

Ready to buy?

Hynix hmt451s6bfr8 a-pb 4 GB DDR3L 1600 MHZ ECC Key Module (DDR3L, PC/Server, 204-Pin SO-DIMM, 1 x 4 GB) is listed on Amazon. Price, availability, shipping and returns are set by Amazon and its sellers — check the listing for current terms. SpecPicks earns a small commission on qualifying purchases — thank you for supporting independent review work.

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Hynix hmt451s6bfr8 a-pb 4 GB DDR3L 1600 MHZ ECC Key Module (DDR3L, PC/Server, 204-Pin SO-DIMM, 1 x 4 GB)
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