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Four green DDR4 DIMM sticks without heat spreaders

Computer Memory Solutions

Computer Memory Solutions 64GB (4x16GB) DDR4 21300 2666MHz NON ECC DIMM Asrock Z490 Z490M memory upgrade

SKU CH-KZQ0-DDT4X

A 64 GB kit of four 16 GB DDR4 2666 MHz CL19 unbuffered DIMMs for ASRock Z490 and compatible server boards

  • Capacity64GB (4 x 16GB)
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Timing19-19-19
  • Voltage1.2V
  • 64GB total capacity from four 16GB modules
  • 2666MHz DDR4 speed rated at PC4-21300
  • CL19 latency with 19-19-19 timing at 1.2V
  • Guaranteed compatibility with ASRock Z490 Taichi and Z490M Pro4
  • Non-ECC unbuffered 288-pin DIMM with 2Rx8 rank

Capacity and platform match

This 64 GB kit contains four 16 GB DDR4 DIMMs rated at 2666 MHz with CL19 timings and 1.2 V operation. The modules are unbuffered, non-ECC, dual-rank 2Rx8 parts built on 288-pin PCB and validated for ASRock Z490 Taichi, Z490M Pro4, Server 1U2LW-C242 and Server 1U4LW-X470 platforms.

Sustained-load behaviour

Running at the rated 2666 MHz speed, the memory maintains stable throughput during extended workloads because the JEDEC-standard voltage and timings keep signal integrity consistent across all four slots. Mixed-module installations will downclock to the slowest installed DIMM or the CPU memory controller limit, so a matched kit avoids that bottleneck.

Upgrade context

The kit fills all four DIMM slots on the supported boards, taking the system to the 128 GB maximum capacity ceiling when paired with an identical kit. Builders who need ECC error correction, registered buffering or speeds above 2666 MHz must choose a different module class because this product provides none of those features.

Besonderheiten

  • 64GB total capacity from four 16GB modules
  • 2666MHz DDR4 speed rated at PC4-21300
  • CL19 latency with 19-19-19 timing at 1.2V
  • Guaranteed compatibility with ASRock Z490 Taichi and Z490M Pro4
  • Non-ECC unbuffered 288-pin DIMM with 2Rx8 rank

Technische Daten

BrandComputer Memory Solutions
ModelCM2048642666DIMM
Capacity64GB (4 x 16GB)
Type288-Pin DDR4 SDRAM
SpeedDDR4 2666 (PC4 21300)
CAS LatencyCL19
Timing19-19-19
Voltage1.2V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemASRock Motherboard Z490 Taichi, Z490M Pro4, Server 1U2LW-C242 (E3C242D4U), Server 1U4LW-X470
Package Content4 Memory RAM Sticks

Fragen zu diesem Artikel

How much heat and power will the 1.2V DDR4 2666MHz kit draw when running all day?

The modules operate at 1.2 V without a heat spreader, so they run cool and draw minimal power during continuous use.

What motherboard slots and CPU memory controller are needed for these four 288-pin DIMMs to work?

You need a board with four DDR4 DIMM slots — such as the ASRock Z490 Taichi or Z490M Pro4 — and a CPU that supports DDR4 2666MHz.

Will the CL19 2Rx8 sticks run at rated speed alongside older DDR4 modules I keep installed?

All memory will run at the slowest installed module’s speed or the CPU’s limit, so older sticks may lower the 2666MHz kit’s performance.

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