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Two green DDR4 DIMM sticks in a pair

Computer Memory Solutions

Computer Memory Solutions 16GB (2x8GB) DDR4 2133MHz CL15 DIMM memory upgrade for Alienware x51 R3

SKU CH-QKSH-8T1Q2

A 16 GB dual-channel DDR4 kit rated at 2133 MHz CL15 for the Alienware x51 R3

  • Total capacity16 GB (2 × 8 GB)
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Memory timings15-15-15
  • Rated voltage1.2 V
  • Guaranteed compatibility with Alienware x51 R3
  • 16 GB total capacity in a 2 x 8 GB kit
  • DDR4 2133 MHz speed for responsive performance
  • Low 1.2 V voltage reduces power draw
  • CL15 latency timing for stable operation

16GB DDR4 kit for Alienware x51 R3

This 16GB kit contains two 8GB DDR4 DIMMs rated at 2133MHz with CL15 timings. It is built specifically for the Alienware x51 R3 desktop. The modules are unbuffered, non-ECC and run at 1.2V. Major-brand chips are used to ensure compatibility with the target system.

Sustained load behaviour

Rated at DDR4 2133 (PC4 17000) with 15-15-15 timings, the modules maintain their specified speed and latency during extended workloads. The 2Rx8 dual-rank organisation helps populate memory channels fully on the supported platform. No heat spreader is fitted, so airflow inside the chassis manages thermal performance.

Installation notes

Each stick uses the standard 288-pin DDR4 DIMM form factor and installs in the system's four memory slots. The Alienware x51 R3 supports a maximum of 32GB across four sockets, so this two-stick kit leaves room for expansion. Builders needing more than 32GB total capacity or Error-Correcting Code memory cannot use this kit.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $84.99
Cheaper than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 16 GB (2 × 8 GB)
Lower than about 70% of the 20,941 comparable items (median 32 GB).
Price per GB $5.31 per GB
Cheaper than about 73% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM1024642133DIMM
Total capacity16 GB (2 × 8 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2133 (PC4 17000)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL15
Memory timings15-15-15
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsAlienware x51 R3
In the box
Included items2 Memory RAM Sticks

Questions about this item

How much power does the 1.2 V DDR4 2133 MHz kit draw when the Alienware x51 R3 runs all day?

Each module operates at the standard DDR4 voltage of 1.2 V. Total system power depends on the platform and workload; the memory itself adds only its rated voltage draw.

What must the Alienware x51 R3 already have for this 2 x 8 GB kit to work?

The board needs free 288-pin DDR4 DIMM slots. The x51 R3 ships with four slots and a 32 GB maximum, so two open slots are required for this 16 GB kit.

Will the CL15 timing on these sticks force slower modules already in the x51 R3 to run at CL15 as well?

The motherboard will run all installed memory at the slowest common timing. If existing modules are CL14, the new CL15 sticks will drop to CL14; if they are CL16 or higher, everything runs at the looser timing.

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