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

SAMSUNG

SAMSUNG M378B5273CH0-CH9 4GB DDR3 1333 desktop RAM

SKU CH-T55Y-W1J1X MPN M378B5273CH0-CH9

4 GB DDR3 module running at 1333 MHz with CL9 latency and 240 pins for desktop upgrades

  • Total capacity4 GB
  • Rated speedDDR3 1333 (PC3 10600)
  • CAS latencyCL9
  • 4GB capacity expands system memory for everyday tasks
  • 1333 MHz data rate delivers PC3-10600 bandwidth for responsive performance
  • CL9 latency provides quick access times for smooth operation
  • 240-pin DDR3 form factor fits standard desktop DIMM slots
  • Validated for Dell OptiPlex 390 desktop compatibility

4GB DDR3 1333 desktop module

This 4GB DDR3 module runs at 1333MHz with CL9 latency and fits 240-pin DIMM slots. It is built for older desktop platforms that still use DDR3 memory. The non-ECC unbuffered design suits standard consumer motherboards rather than server boards. Buyers needing ECC support or higher capacities must choose different modules.

Dell OptiPlex 390 compatibility

The supplier data highlights compatibility with the Dell OptiPlex 390 desktop, indicating the module meets that system's memory requirements. No extra software or accessories are bundled with the stick itself. The listing simply confirms the part works in that specific chassis without additional configuration. Systems requiring registered or load-reduced DIMMs will not accept this module.

240-pin unbuffered construction

The stick uses a standard 240-pin DDR3 PCB with gold edge contacts for reliable slot insertion. Unbuffered construction keeps electrical loading low for typical consumer chipsets. The CL9 timing is fixed at the rated 1333MHz speed. Builders working with proprietary OEM boards that demand specific SPD profiles should verify the profile matches before purchase.

How it compares

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

Price $16.99
Cheaper than about 91% of the 3,647 comparable items (median $90.99).
Total capacity 4 GB
Lower than about 80% of the 3,251 comparable items (median 16 GB).
Price per GB $4.25 per GB
Cheaper than about 82% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Total capacity4 GB
Performance
Rated speedDDR3 1333 (PC3 10600)
Memory
CAS latencyCL9

Questions about this item

Does the M378B5273CH0-CH9 module need any periodic cleaning or component replacement?

No routine maintenance is required for the M378B5273CH0-CH9. The DDR3 module has no moving parts or user-serviceable components; if a fault develops the entire stick is replaced.

What limit appears first when the M378B5273CH0-CH9 runs at full 1333 MHz continuously?

The first limit is the fixed DDR3 1333 data rate and CL9 latency; sustained throughput cannot exceed the PC3-10600 specification regardless of workload duration.

How much heat and power does the M378B5273CH0-CH9 produce during all-day operation?

The non-ECC unbuffered DDR3 module draws only standard 1.5 V power and generates minimal heat; no active cooling is needed beyond normal case airflow.

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