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Green circuit board with black chips and gold edge contacts

A-Tech

A-Tech 8GB DDR5 4800MHz CL40 1.1V 1Rx16 IBM-Lenovo 4X71K53890 Desktop RAM

SKU CH-3AQ2-BP751

An 8 GB DDR5 desktop module running at 4800 MHz with CL40 timing and 1.1 V operation, built as a 288-pin unbuffered DIMM for compatible IBM-Lenovo systems

  • Total capacity8 GB
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor Brand Chips
  • CAS latencyCL40
  • Tested speed4800
  • Rated voltage1.1 V
  • 8GB DDR5 module expands desktop capacity for heavier workloads
  • 4800MHz speed with CL40 latency accelerates data access
  • 1V DDR5 standard voltage reduces power draw
  • 288-pin unbuffered DIMM fits standard desktop slots
  • Tested equivalent to IBM-Lenovo 4X71K53890 for drop-in compatibility

Product identity

This 8GB DDR5 module runs at 4800MHz with CL40 latency and 1.1V operation. It is an unbuffered non-ECC DIMM designed for desktop systems using AMD and Intel platforms. The 288-pin form factor fits standard DDR5 slots and replaces the IBM-Lenovo 4X71K53890 part.

Thermals and power

Standard 1.10V DDR5 voltage keeps power draw low during everyday tasks. Major brand chips are tested for reliable operation at the rated frequency. Unbuffered design avoids extra buffering overhead that can add heat or latency.

Sustained load behaviour

Continuous workloads at 4800MHz remain stable thanks to quality assurance testing on each module. The CL40 timing provides consistent access patterns without throttling. Lifetime warranty covers the module for the duration of ownership.

How it compares

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

Price $99.99
Typical for this category: the median of 3,647 items is $90.99.
Total capacity 8 GB
Lower than about 60% of the 3,251 comparable items (median 16 GB).
Price per GB $12.50 per GB
Pricier than about 78% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameA-Tech
Total capacity8 GB
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor Brand Chips
Memory
CAS latencyCL40
Tested speed4800
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.1 V
Compatibility
Recommended forAMD & Intel Compatible

Questions about this item

How do I install the 288-pin DDR5 DIMM, and which step is most often missed?

Align the single key notch on the module with the slot ridge, press straight down until both side clips click, then confirm the system shows 4800 MHz in BIOS; the step most often missed is seating the module fully before the clips engage.

What maintenance or replacement will this 8GB DDR5 4800MHz CL40 module need later?

No scheduled maintenance is required; keep the contacts dust-free and ensure the motherboard BIOS stays updated for memory compatibility, and the module itself only needs replacement if it fails or capacity becomes insufficient.

What limit appears first when this 1.10V DDR5 4800 RAM runs sustained workloads?

The CAS latency of CL40 at 4800 MHz sets the response-time floor, so latency-sensitive tasks hit that timing ceiling before bandwidth or voltage limits become a factor.

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