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Four green DDR4 SODIMM sticks in a row

Computer Memory Solutions

Computer Memory Solutions CM20486417000SO 64GB (4x16GB) DDR4 2133MHz CL15 SODIMM memory upgrade

SKU CH-ETZ8-6C2MJ

A 64 GB kit of four 16 GB DDR4 2133 MHz CL15 SODIMM modules for the Lenovo ThinkPad P50

  • Total capacity64 GB (4 × 16 GB)
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Memory timings15-15-15
  • Rated voltage1.2 V
  • 64 GB total capacity from four 16 GB modules
  • DDR4 2133 MHz speed rated at PC4 17000
  • CL15 CAS latency with 15-15-15 timing
  • 2 V low-voltage unbuffered operation
  • 260-pin SODIMM form factor for Lenovo ThinkPad P50

Capacity and compatibility

This 64 GB kit contains four 16 GB DDR4 SODIMM modules rated at 2133 MHz with CL15 timings. It is built specifically for the Lenovo ThinkPad P50 and uses the 260-pin SO-DIMM form factor. The unbuffered, non-ECC design matches the notebook's memory controller requirements. Voltage is set at 1.2 V for standard mobile operation.

Sustained workload behaviour

The CL15 15-15-15 timing set delivers consistent latency during extended multitasking or rendering sessions. Dual-rank 2Rx8 organisation helps maintain bandwidth when all four slots are populated. Because the modules have no heat spreaders, they rely on the chassis airflow of the ThinkPad P50 to stay within thermal limits under continuous load.

Installation notes

Each stick inserts into the standard 260-pin SODIMM slots accessible under the service panel. Align the notch with the key and press firmly until the side clips engage. The most common issue is incomplete seating, which causes the system to recognise less than the full 64 GB or fail to boot. Verify the total in BIOS after installation.

How it compares

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

Price $435.99
Typical for this category: the median of 21,161 items is $397.99.
Total capacity 64 GB (4 × 16 GB)
Higher than about 60% of the 20,941 comparable items (median 32 GB).
Price per GB $6.81 per GB
Cheaper than about 58% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM20486417000SO
Total capacity64 GB (4 × 16 GB)
Product type260-Pin DDR4 SO-DIMM
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 systemsLenovo Thinkpad P50
In the box
Included items4 Memory RAM Sticks

Questions about this item

How much power does the 1.2V DDR4 kit draw when the ThinkPad P50 runs all day?

Each 16 GB module operates at 1.2 V, the standard DDR4 voltage, so total draw stays within the laptop's normal memory power budget during sustained workloads.

What must the ThinkPad P50 already have for this 4 x 16 GB kit to work?

The notebook needs four free 260-pin SODIMM slots and a BIOS that supports 64 GB of unbuffered non-ECC DDR4 2133 memory.

Will the CL15 2133 MHz modules run correctly alongside any original 2133 MHz sticks I keep in the P50?

Yes, matching speed and CAS latency lets the new 2Rx8 modules operate in sync with existing DDR4 2133 CL15 SODIMMs without timing conflicts.

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