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Green circuit board with black memory chips and gold edge connectors

A-Tech

A-Tech 4GB DDR2 800MHz PC2-6400 240-Pin Desktop RAM

SKU CH-XZ87-2TC19

A 4 GB DDR2 800 MHz desktop module running at 1.8 V with CL6 latency on a 240-pin unbuffered DIMM

  • Total capacity4 GB
  • Rated speedDDR2 800 (PC2 6400)
  • Tested speed800
  • Rated voltage1.8 V
  • Buffer typeUnbuffered
  • Recommended forAMD & Intel Compatible

Capacity 4GB

Speed DDR2 800 (PC2 6400)

  • 4GB capacity lets you run more applications simultaneously
  • DDR2 800 MHz speed delivers responsive data transfer for older desktops
  • 240-pin DIMM form factor fits standard desktop motherboard slots
  • Non-ECC unbuffered design ensures broad compatibility with consumer systems
  • 8V standard voltage matches original DDR2 specifications for stable operation

Capacity and Speed

This module delivers 4GB of DDR2 memory operating at 800MHz with a PC2-6400 rating. It uses the standard 1.8V voltage and a 240-pin DIMM form factor for desktop systems. The CL6 latency provides responsive performance for compatible platforms.

Target Audience

This upgrade suits owners of older desktop PCs that require DDR2 800MHz unbuffered non-ECC memory. It is not suitable for systems that need registered or ECC modules, nor for platforms that use a different memory generation.

Deciding Specification

The 240-pin DDR2 interface is the single specification that determines whether this module will fit and function in your motherboard. Verify that your system specifically supports DDR2 800MHz PC2-6400 unbuffered DIMMs before purchasing.

How it compares

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

Price $50.99
Cheaper than about 65% of the 3,647 comparable items (median $90.99).
Total capacity 4 GB
Lower than about 80% of the 3,251 comparable items (median 16 GB).
Price per GB $12.75 per GB
Pricier than about 79% of the 3,251 comparable items (median $6.75 per GB).

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Specifications

Product
Brand nameA-Tech
Product lineA-Tech DDR2 Desktop Memory RAM
Total capacity4 GB
Performance
Rated speedDDR2 800 (PC2 6400)
Memory
Tested speed800
ECC supportNo
Buffer typeUnbuffered
Power
Rated voltage1.8 V
Compatibility
Recommended forAMD & Intel Compatible

Other versions of this model

5 more in the same range

Questions about this item

Will this module fit a motherboard that only accepts DDR2 memory?

Yes, this is a DDR2 DIMM with 240 pins and runs at 1.8 V, so it fits standard DDR2 desktop slots.

My board lists PC2-6400 as the maximum supported speed — is this module compatible?

The module is rated PC2-6400 at 800 MHz and will operate at that speed or downclock if the board requires a lower frequency.

Does this 4 GB stick require ECC or registered memory support?

No, it is a non-ECC unbuffered UDIMM, which is the common type used in most consumer desktop motherboards.

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