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Green circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions CM512648500SODRH 4GB DDR3 1066MHz SODIMM HP Pavilion Dv4-1540Us Dv4-1530Br

SKU CH-M7CM-3Q23A

A 4 GB DDR3 SODIMM module running at 1066 MHz with CL7 timing for HP Pavilion dv4-1540us and dv4-1530br notebooks

  • Total capacity4 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL7
  • Memory timings7-7-7
  • Rated voltage1.5 V
  • 4GB DDR3 SODIMM boosts multitasking on HP Pavilion dv4
  • 1066 MHz CL7 timing delivers responsive system performance
  • 204-pin unbuffered design fits notebook memory slots directly
  • 5 V operation matches factory voltage for stable upgrades
  • System-specific validation ensures compatibility with dv4-1540us and dv4-1530br

4GB DDR3 1066MHz SODIMM for HP Pavilion dv4

This 4GB DDR3 1066MHz SODIMM module is built for HP Pavilion dv4-1540us and dv4-1530br notebooks. It uses a 204-pin SO-DIMM form factor and runs at 1.5V with CL7 7-7-7 timings. The stick is unbuffered, non-ECC and organised as 2Rx8 with major-brand chips. It is sold as a single 4GB unit.

Replaces slower DDR3 or fills an empty slot

The module upgrades the notebook from lower-speed DDR3 or adds capacity when a second socket is free. The jump is worth it when the system currently runs less than the 8GB maximum supported by the platform and you need more headroom for multitasking. It matches the PC3-8500 specification required by these models.

Check your exact model

Confirm the notebook is a dv4-1540us or dv4-1530br; other dv4 variants may have different memory requirements. Verify how many of the two SODIMM sockets are occupied so you know whether this 4GB stick will bring the total to 4GB or 8GB. The module has no heat spreader and uses standard 1.5V DDR3 voltage.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $20.99
Cheaper than about 90% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $5.25 per GB
Cheaper than about 73% of the 20,941 comparable items (median $8.19 per GB).

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

Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM512648500SODRH
Total capacity4 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3 1066 (PC3 8500)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL7
Memory timings7-7-7
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsHp Pavilion Notebook Dv4-1540Us, Dv4-1530Br
In the box
Included items1 Memory RAM Stick

Questions about this item

Will the 204-pin SODIMM fit the HP Pavilion Dv4-1540Us memory slot?

Yes, the module uses the standard 204-pin DDR3 SODIMM form factor that matches the two SO-DIMM sockets in the Dv4-1540Us and Dv4-1530Br notebooks.

What is the correct way to seat the module so the laptop recognises the full 4GB?

Insert the stick at roughly a 30-degree angle until the gold contacts disappear, then press down firmly until both side clips click into the notches on the PCB.

When should this DDR3 1066MHz stick be replaced if the system becomes unstable?

Replace it if memory diagnostics report errors, if the notebook fails to POST with the module installed, or if you upgrade the platform to a newer DDR generation.

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