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Four green DDR3 sticks with black heat spreaders and gold contacts

Simmtec, Inc

Simmtec, Inc 64GB (4x16GB) DDR3 1600 PC3 12800 240-Pin 1.35V 1.5V Desktop RAM

SKU CH-4ZD4-40DZD

Four 16 GB DDR3-1600 modules provide 64 GB total capacity in a dual-voltage 1.35 V / 1.5 V unbuffered kit

  • Capacity64GB (4 x 16GB)
  • SpeedDDR3 1600 (PC3 12800)
  • 64 GB total capacity from four 16 GB modules
  • DDR3 1600 speed rated at PC3 12800
  • Dual-voltage operation at 1.35 V and 1.5 V
  • 240-pin UDIMM form factor fits desktop slots
  • Non-ECC unbuffered design for standard desktop use

64GB DDR3 Kit for Desktop Upgrades

This kit provides 64GB of desktop memory across four 16GB modules running at DDR3 1600 speed. It suits users expanding older systems that still use the 240-pin DDR3 standard and need maximum capacity for multitasking or virtualization workloads.

Dual-Voltage Modules and Major-Brand Chips

Each module operates at either 1.35V or 1.5V, allowing the memory to adapt to different motherboard voltage requirements without manual adjustment. The chips come from manufacturers such as Micron, Samsung, Hynix or Elpida and are built to meet JEDEC specifications for the stated speed and timing.

Straightforward 240-Pin Installation

The 240-pin UDIMM form factor fits standard desktop DDR3 slots and requires no special tools or configuration beyond seating the modules firmly until the retention clips click. The most common issue is mixing these non-ECC unbuffered sticks with registered or ECC memory, which prevents the system from posting.

Highlights

  • 64 GB total capacity from four 16 GB modules
  • DDR3 1600 speed rated at PC3 12800
  • Dual-voltage operation at 1.35 V and 1.5 V
  • 240-pin UDIMM form factor fits desktop slots
  • Non-ECC unbuffered design for standard desktop use

Specifications

Capacity64GB (4 x 16GB)
SpeedDDR3 1600 (PC3 12800)

Questions about this item

Will the 16GB DDR3 modules need replacement when upgrading to a newer platform?

Yes, DDR3 memory uses a 240-pin interface that is physically and electrically incompatible with later DDR generations, so a platform change requires new modules.

What limits sustained performance on this DDR3-1600 kit?

The 1600MHz clock and PC3-12800 bandwidth ceiling are reached before the 1.35V or 1.5V voltage headroom becomes a factor under continuous load.

How much heat and power does the 64GB kit produce during all-day operation?

Running at the lower 1.35V setting reduces power draw and thermal output compared to standard 1.5V DDR3, while the unbuffered, non-ECC design adds no active cooling overhead.

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