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Green circuit board with black memory chips and gold edge connectors

A-Tech

A-Tech 4GB DDR3 1333MHz PC3-10600 240-Pin Desktop RAM

SKU CH-QP3K-02TX2

A 4 GB DDR3L desktop DIMM running at 1333 MHz with CL9 timing and 1.35 V low-voltage operation, built as a compatible replacement for HP part 638821-001

  • Capacity4GB
  • SpeedDDR3L 1333(PC3L 10600)
  • Tested Frequency1333
  • CAS LatencyCL9
  • Voltage1.35V
  • ECCNo
  • 4GB capacity expands multitasking headroom for everyday desktop workloads
  • DDR3L 1333MHz speed delivers responsive data throughput at PC3-10600 rating
  • Low 1.35V operation reduces power draw and heat in compatible systems
  • 240-pin unbuffered DIMM fits standard desktop memory slots without ECC overhead
  • Tested replacement for HP part 638821-001 ensures drop-in compatibility

HP 638821-001 Compatible 4GB DDR3L Module

This 4GB DDR3L DIMM is a direct replacement for HP part 638821-001. It runs at 1333MHz with a CL9 latency and operates at 1.35V low voltage. The unbuffered, non-ECC design suits standard desktop motherboards.

Fits HP Systems Using 638821-001

Owners of HP desktops specifying the 638821-001 part number can install this module without configuration changes. Builders needing ECC, registered buffering, or 1.35V-only DDR3L support on non-HP platforms should verify their board manual first.

240-Pin DDR3L 1333MHz 1.35V Specification

The 240-pin DDR3L interface at 1333MHz and 1.35V determines physical and electrical compatibility. Systems requiring 262-pin SODIMM form factors, different voltages, or higher speeds cannot use this module.

Points forts

  • 4GB capacity expands multitasking headroom for everyday desktop workloads
  • DDR3L 1333MHz speed delivers responsive data throughput at PC3-10600 rating
  • Low 1.35V operation reduces power draw and heat in compatible systems
  • 240-pin unbuffered DIMM fits standard desktop memory slots without ECC overhead
  • Tested replacement for HP part 638821-001 ensures drop-in compatibility

Caractéristiques

BrandA-Tech
SeriesCompatible Replacement for HP
Model638821-001
Capacity4GB
SpeedDDR3L 1333(PC3L 10600)
Tested Frequency1333
CAS LatencyCL9
Voltage1.35V
ECCNo
Buffered/RegisteredUnbuffered
ChipsetMajor Brand Chipset
Heat SpreaderNo
Features638821-001
Recommend UseCompatible Replacement for HP 638821-001

Questions sur cet article

Will this 240-pin DDR3L module fit my standard desktop DIMM slot?

Yes, the module uses the standard 240-pin DDR3 DIMM form factor used by desktop motherboards that support DDR3 memory.

My system requires the HP 638821-001 part number — is this a direct replacement?

This module is listed as a compatible replacement for HP part number 638821-001, matching the 4 GB capacity, 1333 MHz speed and 1.35 V voltage.

Does this RAM require any special BIOS setting to run at 1333 MHz?

The module is rated for 1333 MHz at CL9 latency and 1.35 V; most desktop boards will configure these timings automatically on boot.

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