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Green 240-pin DDR3 memory module with black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM5126412800DIMM 4GB DDR3 1600MHz CL11 memory upgrade

SKU CH-PW1W-E5FJY

A 4GB DDR3 1600MHz CL11 module validated for HP Pavilion Slimline desktops

  • Total capacity4 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL11
  • Memory timings11-11-11
  • Rated voltage1.5 V
  • 4GB DDR3 1600MHz module upgrades compatible HP Pavilion Slimline systems
  • CL11 11-11-11 timing delivers responsive performance for everyday computing tasks
  • 5V unbuffered non-ECC design ensures stable operation without error correction overhead
  • 240-pin DIMM form factor fits directly into the two available memory slots
  • Single 4GB stick allows flexible expansion up to 16GB maximum capacity

HP Pavilion Slimline upgrade

This 4GB DDR3 module is built for HP Pavilion Slimline models s5-1246la, 455-012d and 450-a30. It adds memory capacity to systems that currently have one free 240-pin slot. The single stick format suits owners who want a straightforward capacity increase without replacing existing modules.

Low-voltage unbuffered operation

Running at 1.5V with CL11 timing of 11-11-11, the module draws modest power and produces minimal heat without a spreader. Unbuffered design keeps electrical load light on the memory controller during everyday desktop workloads.

DDR3 1600 PC3 12800 speed

The 1600MHz rating matches the maximum supported frequency for the listed Slimline platforms. Builders whose motherboards only support lower DDR3 speeds will see the module downclock automatically, while those needing 8GB or 16GB total capacity must add a second stick.

How it compares

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

Price $10.99
Cheaper than about 96% 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 $2.75 per GB
Cheaper than about 91% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5126412800DIMM
Total capacity4 GB
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1600 (PC3 12800)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL11
Memory timings11-11-11
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsHP Pavilion Slimline s5-1246la, 455-012d, 450-a30
In the box
Included items1Memory Ram Stick

Questions about this item

How do I install the 240-pin DDR3 DIMM in my HP Pavilion Slimline s5-1246la and what step is often missed?

Power off and unplug the PC, open the case, align the notch on the module with the slot key, press firmly until both retention clips click shut, then verify the firmware recognises the full 4GB at 1600MHz.

What maintenance or replacement will this 1.5V unbuffered module need over its service life?

No routine maintenance is required; keep the interior dust-free and ensure case airflow stays adequate, and the module will run for the system's usable lifetime unless a physical fault develops.

What limit appears first when this CL11 1Rx8 kit runs sustained workloads on the two-slot board?

The platform maximum of 16GB across the two sockets is reached before any thermal or voltage ceiling, so adding a second 4GB stick leaves 8GB still available for future expansion.

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