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Four green DDR4 DIMM sticks, no heat spreaders

Computer Memory Solutions

Computer Memory Solutions 64GB (4x16GB) DDR4 2666 CL19 DIMM kit D56

SKU CH-KPKG-38GEX

64 GB DDR4 kit of four 16 GB DIMMs at 2666 MHz CL19 for ASUS ROG Maximus XI and XII Hero boards

  • Capacity64GB (4 x 16GB)
  • Type288-Pin DDR4 SDRAM
  • SpeedDDR4 2666 (PC4 21300)
  • CAS LatencyCL19
  • Timing19-19-19
  • Voltage1.2V
  • 64 GB total capacity across four 16 GB modules
  • DDR4 2666 MHz speed rated at PC4-21300
  • CL19 CAS latency with 19-19-19 timing
  • 2 V low-voltage operation for efficient power use
  • Validated for ASUS ROG MAXIMUS XI and XII HERO motherboards

64GB DDR4 kit for ASUS ROG MAXIMUS XI/XII HERO

This 64GB kit contains four 16GB DDR4 2666 CL19 DIMMs built for ASUS ROG MAXIMUS XI HERO (WI-FI), ROG MAXIMUS XI HERO and ROG MAXIMUS XII HERO (Wi-Fi) motherboards. It targets builders who need the full 64GB capacity on these specific boards. Unbuffered non-ECC modules run at 1.2V with 19-19-19 timings.

288-pin unbuffered DIMMs without heat spreaders

Each stick uses a 288-pin DDR4 interface and major-brand chips in a 2Rx8 configuration. The absence of heat spreaders keeps the profile low for tight CPU cooler clearance. Four modules fill every slot on the supported boards, so the memory controller operates at the rated 2666 speed when the CPU allows it.

Verify your board model

Compatibility is limited to the listed ASUS/Asmobile ROG MAXIMUS XI and XII HERO models plus the 242 P11C-I, 242 P11C-M/4L and 246 WS C246 PRO boards. The platform maximum is 128GB across four sockets, so this kit uses all available slots. A 64-bit operating system is required to address more than 4GB. Buyers needing ECC, registered modules or speeds above 2666 should look elsewhere.

Highlights

  • 64 GB total capacity across four 16 GB modules
  • DDR4 2666 MHz speed rated at PC4-21300
  • CL19 CAS latency with 19-19-19 timing
  • 2 V low-voltage operation for efficient power use
  • Validated for ASUS ROG MAXIMUS XI and XII HERO motherboards

Specifications

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 SystemASUS/Asmobile Motherboard ROG MAXIMUS XI HERO (WI-FI), ROG MAXIMUS XI HERO, ROG MAXIMUS XII HERO (Wi-Fi)
Package Content4 Memory RAM Sticks

Questions about this item

What does the DDR4 2666 (PC4 21300) rating mean for actual speed on the ROG MAXIMUS XI HERO?

The kit runs at 2666 MHz with CL19 timing at 1.2 V; the motherboard will operate it at that speed unless the CPU memory controller limits it lower.

Will the four 288-pin DIMMs fit the four slots on the ROG MAXIMUS XII HERO (Wi-Fi) without clearance issues?

Yes, the board has four DDR4 slots and these unbuffered 288-pin modules occupy all of them; no heat spreader is present so large coolers rarely interfere.

Which slot order should I use when installing the 4 x 16 GB sticks for dual-channel operation?

Populate the same-coloured slots first — usually slots 2 and 4, then 1 and 3 — so the board sees matched pairs per channel.

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