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Green rectangular laptop memory module with gold edge connectors and black chips

Timetec

Timetec 8GB DDR3L 1866MHz CL13 1.35V 204-Pin SODIMM laptop RAM

SKU CH-Z1XE-BM7W4

8GB DDR3L SODIMM running at 1866MHz CL13 and 1.35V, built for compatible Apple iMac and MacBook Pro models

  • Total capacity8 GB
  • Rated speedDDR3L 1866 (PC3L 14900)
  • CAS latencyCL13
  • Rated voltage1.35 V
  • Buffer typeUnbuffered
  • Recommended forFor Apple System

Capacity 8GB

  • 8GB capacity expands multitasking headroom for demanding workloads
  • DDR3L 1866MHz speed delivers responsive data throughput
  • Low 1.35V operation reduces power draw and heat
  • CL13 latency supports quick memory access cycles
  • 204-pin SODIMM form factor fits compatible laptop slots

8GB DDR3L SODIMM for compatible Macs

This 8GB DDR3L 1866MHz SODIMM module uses a 204-pin layout and runs at 1.35V with CL13 latency. It is built as an unbuffered, non-ECC dual-rank stick using selected ICs. The memory is intended for upgrading supported Apple iMac systems where extra capacity improves multitasking headroom.

Check your iMac model and slot count

Verify the machine identifier matches the listed compatible models such as iMac 17,1 or A1419 before ordering. Confirm the system accepts DDR3L SODIMM modules at 1866MHz and that a free slot exists for the 204-pin form factor. The module also tolerates 1.5V operation if the platform requires it.

Low-voltage operation keeps thermals modest

At 1.35V the stick draws less power than standard DDR3, helping to limit heat output inside the compact iMac chassis. No active cooling is present on the module itself, so it relies on the system's internal airflow. Typical operation remains quiet with no audible noise from the memory.

How it compares

Measured against everything we stock in Laptop RAM, at today’s prices. Recalculated every night.

Price $15.99
Cheaper than about 91% of the 2,079 comparable items (median $70.99).
Total capacity 8 GB
Lower than about 60% of the 1,886 comparable items (median 16 GB).
Price per GB $2.00 per GB
Cheaper than about 96% of the 1,886 comparable items (median $5.94 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 nameTimetec
Model nameMM-H8GD318J7D
Total capacity8 GB
Product type204-Pin DDR3 SO-DIMM
Performance
Rated speedDDR3L 1866 (PC3L 14900)
Memory
CAS latencyCL13
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.35 V
Compatibility
Recommended forFor Apple System

Other versions of this model

5 more in the same range

Questions about this item

What comes in the box with the 8GB DDR3L 1866MHz SODIMM and do I need anything else to install it?

The box contains the single 8GB 204-pin SODIMM module. No extra cables or brackets are required; a small Phillips screwdriver and the computer's service manual are the only tools needed for installation.

Should I choose the 1.35V or 1.5V setting for my late 2015 27-inch iMac?

The module is rated for both 1.35V and 1.5V operation. Your iMac (model identifiers MK462LL/A, MK472LL/A, MK482LL/A or the BTO Core i7 4.0 GHz version) will automatically select the correct voltage, so no manual choice is necessary.

What does the 1866MHz PC3L-14900 CL13 rating mean once the module is running in my iMac?

It indicates a DDR3L data rate of 1866MT/s with a CAS latency of 13 cycles at 1.35V. The iMac's memory controller will configure these timings automatically, delivering the rated bandwidth and latency for multitasking workloads.

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