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Two green DDR4 DIMMs with black chips no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM2048722400ECCR 32GB (2x16GB) DDR4 2400 ECC Registered DIMM

SKU CH-K8CS-ZB99N

32 GB DDR4 ECC registered dual-rank kit (2 × 16 GB) at 2400 MHz CL17 1.2 V for ASRock X99 motherboards

  • Total capacity32 GB (2 × 16 GB)
  • Rated speedDDR4 2400 (PC4 19200)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL17
  • Memory timings17-17-17
  • Rated voltage1.2 V
  • 32GB dual-channel kit doubles capacity for demanding workloads
  • ECC registered design detects and corrects single-bit errors automatically
  • DDR4 2400 speed at CL17 timing delivers responsive data throughput
  • 2V operation reduces power draw and thermal load
  • Validated for ASRock Fatal1ty X99M Killer, X99 Extreme3, X99M Extreme4 platforms

Targeted upgrade for ASRock X99M boards

This 32 GB kit (2 x 16 GB) is built specifically for the ASRock Fatal1ty X99M Killer, Fatal1ty X99M Killer/3.1, X99 Extreme3 and X99M Extreme4 motherboards. It delivers registered ECC DDR4 memory for systems that require error correction and signal buffering. The modules are validated for these four board models only.

Registered ECC with CL17 timing

Each DIMM runs at DDR4 2400 (PC4 19200) with a CAS latency of 17-17-17 at 1.2 V. The registered design places a buffer on the command bus, which is mandatory for the supported X99M platforms. Mixing with unbuffered or non-ECC modules will prevent the system from posting.

Two-slot kit leaves two slots open

The package contains two 288-pin DIMMs, occupying half of the four available memory sockets on the compatible boards. This leaves room to reach the platform maximum of 64 GB by adding two more identical registered ECC modules. The memory will clock down automatically to match the installed processor.

How it compares

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

Price $102.99
Cheaper than about 67% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (2 × 16 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $3.22 per GB
Cheaper than about 89% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM2048722400ECCR
Total capacity32 GB (2 × 16 GB)
Product type288-Pin DDR4 SDRAM
Performance
Rated speedDDR4 2400 (PC4 19200)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL17
Memory timings17-17-17
ECC supportYes
Buffer typeRegistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.2 V
Compatibility
Compatible systemsASRock Motherboard Fatal1ty X99M Killer, Fatal1ty X99M Killer/3.1, X99 Extreme3, X99M Extreme4
In the box
Included items2 Memory RAM Sticks

Questions about this item

What does the DDR4 2400 speed mean once the modules are installed in the ASRock X99 board?

The kit runs at 2400 MHz with CL17 timing, delivering the rated DDR4-19200 data rate when the platform supports it.

How does the ECC registered design affect the memory interface on these boards?

ECC and registered operation add error correction and signal buffering, which the X99 chipset uses for stable multi-DIMM configs.

What physical clearance do the 288-pin DIMMs need in the Fatal1ty X99M Killer?

Each stick is a standard 288-pin DDR4 DIMM without a heat spreader, so it fits the board's four memory sockets directly.

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