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Green rectangular circuit board with gold edge connector and black memory chips

Crucial

Crucial CT12864AC667 1GB DDR2 667 laptop RAM

SKU CH-P5TV-T4MBK MPN CT12864AC667

Adds 1 GB of DDR2 667 laptop memory in a 200-pin SO-DIMM with CL5 timing at 1.8 V

  • Total capacity1 GB
  • Rated speedDDR2 667 (PC2 5300)
  • CAS latencyCL5
  • Memory timings5-5-5-12
  • Rated voltage1.8 V
  • Buffer typeUnbuffered
  • Reliable upgrade with DDR2 667 (PC2 5300) speed
  • Stable performance from CL5 latency timing
  • Efficient operation at 1.80V voltage level
  • Fits laptops needing 200-pin SO-DIMM modules
  • 1GB capacity adds responsive multitasking headroom

1GB DDR2 SO-DIMM for older laptops

This 1GB Crucial module uses the 200-pin DDR2 SO-DIMM form factor and runs at 667 MT/s (PC2-5300). It operates at 1.80V with CL5 5-5-5-12 timings and is unbuffered non-ECC. The part is new and suited to notebooks that accept DDR2 memory.

Suits machines with a DDR2 200-pin slot

The module fits laptops designed for DDR2 SO-DIMMs running at 667 MT/s. It will not work in systems that require a different pin layout, a different voltage, or a later memory generation. Buyers whose laptop needs a higher capacity per slot or a faster DDR2 speed grade should look at something else.

200-pin DDR2 SO-DIMM interface decides fit

The only specification that determines compatibility is the 200-pin DDR2 SO-DIMM interface combined with the 667 MT/s speed rating. If the service manual lists PC2-5300 200-pin DDR2, this module matches; otherwise it cannot be installed.

How it compares

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

Price $15.99
Cheaper than about 91% of the 2,079 comparable items (median $70.99).
Total capacity 1 GB
Lower than about 98% of the 1,886 comparable items (median 16 GB).
Price per GB $15.99 per GB
Pricier than about 90% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameCrucial
Model nameCT12864AC667
Total capacity1 GB
Product type200-Pin DDR2 SO-DIMM
Performance
Rated speedDDR2 667 (PC2 5300)
Memory
CAS latencyCL5
Memory timings5-5-5-12
ECC supportNo
Buffer typeUnbuffered
Heat spreaderNo
Power
Rated voltage1.8 V

Questions about this item

Does this 200-pin DDR2 SO-DIMM fit my laptop's memory slot?

This module uses the standard 200-pin DDR2 SO-DIMM form factor. It fits any laptop slot designed for DDR2 667 (PC2 5300) memory. Check your manual to confirm the slot type.

What is the correct way to seat the module so the 200 pins make full contact?

Align the notch on the module with the key in the slot, insert at a 30-degree angle, then press down firmly until the side clips click. The notch position is specific to DDR2.

Will this 1.80V DDR2 module need any firmware updates or battery replacement over time?

No firmware or battery is involved. The module is a passive DRAM component. If a memory error appears later, run a diagnostic tool; a faulty stick is simply replaced.

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