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Two green DDR4 SO-DIMM sticks, 64GB kit

Computer Memory Solutions

Computer Memory Solutions 64GB (2x32GB) DDR4 2666 CL19 SO-DIMM memory upgrade for Dell Precision 7540 7740

SKU CH-9A7T-SV60F

64 GB kit of two 32 GB DDR4 2666 CL19 SO-DIMM modules for Dell Precision 7540 and 7740 mobile workstations

  • Capacity64GB (2 x 32GB)
  • Type260-Pin DDR4 SO-DIMM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Timing19-19-19
  • Voltage1.2V
  • 64 GB capacity with two 32 GB modules for heavy multitasking
  • DDR4 2666 speed rated at PC4 21300 for fast data rates
  • CL19 latency timing 19-19-19 keeps response tight
  • 2 V operation reduces power draw and heat
  • Validated for Dell Precision 7540 and 7740 mobile workstations

Compatible Dell Precision Upgrade

This 64GB kit uses two 32GB DDR4 SO-DIMM modules rated at 2666MHz with CL19 timing. It is built for Dell Precision Mobile Workstation 7540 and 7740 systems that require non-ECC, unbuffered memory. The modules run at 1.2V and use 260-pin connectors.

Fits Four-Socket Layout

The workstations accept up to 128GB across four sockets, so this pair occupies half the slots and leaves room for another matched kit. All installed memory will operate at the speed of the slowest module or the processor limit. A 64-bit operating system is needed to address the full capacity.

For Non-ECC Core i9/i7/i5 Builds

The kit suits buyers upgrading Intel Core i9, i7 or i5 configurations that require non-ECC SO-DIMMs. It does not meet the ECC requirement of Xeon-based models, so those systems need a different module type. Users wanting more than 64GB must add a second matched pair.

Highlights

  • 64 GB capacity with two 32 GB modules for heavy multitasking
  • DDR4 2666 speed rated at PC4 21300 for fast data rates
  • CL19 latency timing 19-19-19 keeps response tight
  • 2 V operation reduces power draw and heat
  • Validated for Dell Precision 7540 and 7740 mobile workstations

Specifications

BrandComputer Memory Solutions
ModelCM4096642666SO
Capacity64GB (2 x 32GB)
Type260-Pin DDR4 SO-DIMM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Timing19-19-19
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemDell Precision Mobile Workstation 7540, Precision Mobile Workstation 7740
Package Content2 Memory RAM Sticks

Questions about this item

Will the 2666 MHz speed hold under continuous heavy workloads?

The modules run at 2666 MHz with CL19 timings and 1.2 V; sustained performance is limited by the CPU memory controller and thermal design of the Dell Precision 7540 or 7740.

How much heat or noise do the 2Rx8 sticks add during all-day operation?

These unbuffered SO-DIMMs have no heat spreader and draw 1.2 V; they add negligible heat and produce no audible noise inside the Precision 7540 or 7740 chassis.

Do I need a 64-bit operating system already installed to use the full 64 GB?

Yes, a 64-bit OS is required to address more than 4 GB; the Precision 7540 or 7740 must also have an Intel Core i9, i7 or i5 processor that supports non-ECC DDR4 SO-DIMMs.

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