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Green circuit board SODIMM module with black memory chips and gold edge contacts

Computer Memory Solutions

Computer Memory Solutions 4GB DDR3 1066MHz SODIMM memory upgrade

SKU CH-WJ1X-QC0YJ

4GB DDR3 1066MHz SODIMM module for HP ProBook 6440B, 6450B and 6540B laptops

  • Capacity4GB
  • Type204-Pin DDR3 SO-DIMM
  • SpeedDDR3 1066 (PC3 8500)
  • CAS LatencyCL7
  • Timing7-7-7
  • Voltage1.5V
  • Boosts multitasking with 4GB DDR3 1066MHz capacity
  • Low CL7 latency sharpens system responsiveness
  • 5V operation reduces power draw and heat
  • 204-pin SODIMM fits ProBook 6440B 6450B 6540B
  • Lifetime warranty from CMS backs long-term reliability

Targeted DDR3 upgrade for HP ProBook notebooks

This 4GB SODIMM module is built for HP and Compaq ProBook models including the 6440B, 6450B and 6540B. It suits owners who need a single stick to replace a failed module or to fill an empty slot in a supported laptop.

Straightforward slot insertion with no configuration

The unbuffered, non-ECC stick installs like any standard 204-pin SODIMM. Because it uses fixed CL7 7-7-7 timings at 1.5V, the BIOS must accept those exact parameters; systems that require different latencies or voltages will not boot with this module fitted.

Four gigabytes of DDR3-1066 capacity for everyday

The 4GB rank handles typical office applications, web browsing and light multitasking on compatible ProBook hardware. It reaches its limit when running memory-intensive suites, virtual machines or modern operating systems that demand more than the single stick can provide.

Points forts

  • Boosts multitasking with 4GB DDR3 1066MHz capacity
  • Low CL7 latency sharpens system responsiveness
  • 5V operation reduces power draw and heat
  • 204-pin SODIMM fits ProBook 6440B 6450B 6540B
  • Lifetime warranty from CMS backs long-term reliability

Caractéristiques

BrandComputer Memory Solutions
ModelCM512648500SODRH
Capacity4GB
Type204-Pin DDR3 SO-DIMM
SpeedDDR3 1066 (PC3 8500)
CAS LatencyCL7
Timing7-7-7
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemHp Probook 6440B, 6450B, 6540B
Package Content1 Memory RAM Stick

Questions sur cet article

How do I confirm the 1066 MHz CL7 timing is active after installing the 204-pin DDR3 SODIMM?

Open Task Manager or BIOS and verify the memory speed reads 1066 MHz with CL7 timings; the module runs at 1.5 V unbuffered so no extra configuration is needed.

What comes in the package and what must I source separately?

The box contains one 4 GB 204-pin DDR3 SODIMM stick; no tools, screws or additional modules are included.

Which capacity or version should I choose for a ProBook 6440b upgrade?

This single 4 GB PC3-8500 CL7 SODIMM matches the ProBook 6440b specification; select it if you need one 4 GB stick.

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