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Green Lenovo 256 MB DDR2 200-pin SODIMM module with black chips

Lenovo

Lenovo 256 MB DDR2 533 MHz CL4 200-pin SODIMM

SKU CH-K59F-62F4V

256 MB DDR2 SODIMM running at 533 MHz with CL4 latency for compatible ThinkPad R52 and T43 models

  • CAS latencyCL4
  • ECC supportNon-parity
  • Product typeRAM Module
  • Boosts system responsiveness with 256 MB DDR2 533 MHz memory
  • CL4 latency reduces access delay for smoother multitasking
  • 200-pin SODIMM fits compatible ThinkPad R52 and T43 models
  • Non-parity DDR2 SDRAM adds capacity without ECC overhead
  • Genuine Lenovo module built to PC2-4200 standard for reliable upgrades

Product Identity

The Lenovo 256 MB DDR2 533 MHz CL4 SODIMM is a laptop memory module designed for specific legacy ThinkPad models. It targets owners of compatible systems seeking a direct replacement or capacity increase using original specification parts.

Capacity and Headroom

At 256 MB this module handles basic operating system tasks and light applications typical of the DDR2 era. It runs out quickly when multiple programs or modern web content are open, limiting multitasking headroom on supported hardware.

Upgrade Context

This part replaces an existing DDR2 SODIMM in listed ThinkPad R52 and T43 series machines. The jump is worth it when a system has an empty slot or a smaller module installed and the user needs period-correct maximum memory for legacy software compatibility.

How it compares

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

Price $19.99
Cheaper than about 87% of the 2,079 comparable items (median $70.99).

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 nameLenovo
Product typeRAM Module
Memory
CAS latencyCL4
ECC supportNon-parity

Questions about this item

Will this DDR2 533 MHz CL4 SODIMM work with the existing PC2-4200 memory in my ThinkPad R52 1846?

Yes, it matches the DDR2-533/PC2-4200 standard and CL4 latency, so it will run alongside identical modules at the same speed and timing.

How can I verify the module is detected at 533 MHz with CL4 timing after installation?

Enter the BIOS or use a system-information tool; the memory should report 256 MB, DDR2-533 (PC2-4200) and CAS latency 4.

Does the package include only the single 256 MB 200-pin SODIMM or are extra items supplied?

The box contains one 256 MB DDR2 SODIMM module; no cables, brackets or additional parts are included.

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