We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Green circuit board with black memory chips and gold edge connector

Computer Memory Solutions

Computer Memory Solutions 4GB DDR4 2133MHz SODIMM for Lenovo ThinkCentre M900z A17

SKU CH-9D47-Y5KB5

A 4GB DDR4 2133MHz SODIMM module with CL15 timing and 1.2V operation, built for the Lenovo ThinkCentre M900z all-in-one

  • Total capacity4 GB
  • Rated speedDDR4 2133 (PC4 17000)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL15
  • Memory timings15-15-15
  • Rated voltage1.2 V
  • 4GB DDR4 2133MHz boosts ThinkCentre M900z responsiveness
  • CL15 timing at 1.2V lowers power draw
  • 260-pin SODIMM fits the all-in-one slot directly
  • Single 4GB module leaves second slot open for 32GB max
  • Major-brand chips backed by lifetime exchange warranty

System-specific DDR4 SODIMM

This 4 GB DDR4 2133 MHz SODIMM is built for the Lenovo ThinkCentre M900z All-in-One. It installs directly into the system's 260-pin slots without configuration changes. The module targets owners of that specific A17 chassis who need a straightforward capacity increase.

4 GB single-rank module at CL15

The stick provides 4 GB of unbuffered, non-ECC memory running at 1.2 V with 15-15-15 timings. It suits everyday office workloads and light multitasking. The platform maximum is 32 GB across two sockets, so this module leaves headroom for a second stick. Demanding content-creation or virtualisation tasks will exceed the usable capacity of a single 4 GB unit.

Drop-in upgrade for a two-slot All-in-One

The M900z uses two SODIMM sockets; this kit occupies one and requires no heat spreader or extra clearance. Adding a matching second module enables dual-channel operation and reaches the 32 GB ceiling. Builders needing more than 32 GB total, ECC support, or registered DIMMs must choose a different platform.

How it compares

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

Price $21.99
Cheaper than about 89% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $5.50 per GB
Cheaper than about 70% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5126417000SO
Total capacity4 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 rank1Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsLenovo ThinkCentre M900z All-in-On
In the box
Included items1Memory Ram Stick

Questions about this item

Will this 260-pin DDR4 2133MHz SODIMM run with the existing memory in my ThinkCentre M900z?

Yes, the module is unbuffered non-ECC DDR4-2133 CL15 at 1.2V, matching the M900z specification, so it will operate alongside the factory-installed SODIMM in the second slot.

How can I verify the stick is running at 2133MHz after installation?

Open Task Manager’s Performance tab or run CPU-Z; both will show the memory operating at 2133 MT/s with 15-15-15 timings when the system is under load.

Does the package include only the 4GB SODIMM or are tools and extra brackets supplied?

The box contains one 260-pin DDR4 SODIMM; no screwdrivers, brackets or additional cables are included.

More in Model-Specific Memory Upgrades

Similar items