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Green rectangular laptop memory module with black chips and gold edge connector

Gigaram

Gigaram GR64S4S816-75-MP72 64MB 144-pin PC133 CL3 SDRAM SODIMM laptop RAM

SKU CH-VGX6-VV1JW

64 MB PC133 CL3 SDRAM SODIMM with 144-pin unbuffered layout at 3.3 V for legacy laptop upgrades

  • Total capacity64 MB
  • Rated speedPC 133
  • CAS latencyCL3
  • Rated voltage3.3 V
  • Buffer typeUnbuffered
  • Product type144-Pin SDR SO-DIMM
  • 64 MB capacity extends usable memory for legacy laptops
  • PC133 CL3 timing matches original system specifications
  • 144-pin SODIMM form factor fits period-correct slots
  • Unbuffered non-ECC design suits standard consumer notebooks
  • 3 V operation aligns with vintage platform requirements

What this module is

The Gigaram GR64S4S816-75-MP72 is a 64MB PC133 CL3 SDRAM SODIMM built for legacy laptops that accept 144-pin unbuffered memory. It suits technicians restoring period-correct systems or maintaining vintage industrial hardware that still relies on this form factor.

Build and connectors

The stick uses a standard 144-pin SO-DIMM edge connector keyed for 3.3V operation and carries four chips in an 8x16 organisation. Non-ECC, unbuffered layout means it drops straight into compatible slots without registration overhead or parity circuitry.

Thermals and power

Running at 3.30V with a CL3 timing at 133MHz, the module draws modest power and produces minimal heat in normal use. Passive cooling inside the laptop chassis is sufficient; no active airflow or extra voltage headroom is required for stable operation.

How it compares

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

Price $10.99
Cheaper than about 95% of the 2,079 comparable items (median $70.99).
Total capacity 64 MB
Lower than about 99% of the 1,886 comparable items (median 16 GB).
Price per GB $171.72 per GB
Pricier than about 95% of the 1,886 comparable items (median $5.94 per GB).

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Specifications

Product
Brand nameGigaram
Model nameGR64S4S816-75-MP72
Total capacity64 MB
Product type144-Pin SDR SO-DIMM
Performance
Rated speedPC 133
Memory
CAS latencyCL3
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage3.3 V

Questions about this item

What does the PC133 rating mean for real-world speed on this module?

The PC133 rating means the module runs at 133 MHz, and the CL3 latency sets the minimum delay for each data request.

What physical slot and voltage does this 144-pin SODIMM require?

It fits a 144-pin SO-DIMM socket and operates at 3.3 V, using unbuffered, non-ECC SDRAM chips.

How is this SODIMM installed, and what step do people often miss?

Align the notch on the module with the key in the slot, insert at an angle, then press down firmly until both side clips click into place.

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