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Two black DDR2 desktop memory modules without heat spreaders

OWC

OWC 4GB (2x2GB) DDR2 800 PC2-6400 CL6 1.8V UDIMM Desktop RAM

SKU CH-E237-CSFT8

A dual-channel kit of two unbuffered DDR2 800 modules totalling 4 GB at CL6 latency and 1.8 V for desktop upgrades

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR2 800 (PC2 6400)
  • CAS latencyCL6
  • Rated voltage1.8 V
  • Buffer typeUnbuffered
  • Kit configurationDual Channel Kit

Capacity 4GB (2 x 2GB)

  • Dual-channel kit adds 4 GB capacity for smoother multitasking
  • DDR2 800 speed with CL6 latency improves data throughput
  • 8 V JEDEC-standard voltage ensures broad desktop compatibility
  • 240-pin unbuffered non-ECC modules install without extra configuration
  • 100 % ROHS-compliant build tested to meet OEM specifications

DDR2 800 dual-channel kit

This OWC kit delivers four gigabytes of DDR2 800 memory in two matched 2GB modules. It targets owners of legacy desktops that require PC2-6400 unbuffered DIMMs for a straightforward capacity boost.

240-pin unbuffered DIMMs

Each stick uses the standard 240-pin UDIMM form factor without a heat spreader, keeping the profile low for tight motherboard layouts. The black PCB fits directly into existing slots, and the JEDEC-compliant 1.8V operation ensures broad compatibility with older platforms.

CL6 latency at 1.8V

The modules run at CAS latency 6 while maintaining the standard DDR2 voltage of 1.8V, a combination that determines whether the kit will post stably on a given board. Matching these two figures to the system's requirements is the single check that confirms a successful upgrade.

How it compares

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

Price $28.99
Cheaper than about 79% of the 3,647 comparable items (median $90.99).
Total capacity 4 GB (2 × 2 GB)
Lower than about 80% of the 3,251 comparable items (median 16 GB).
Price per GB $7.25 per GB
Typical for this category: the median of 3,251 items is $6.75 per GB.

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Specifications

Product
Brand nameOWC
Part number6U4D22R8004P
Total capacity4 GB (2 × 2 GB)
Product colorBlack
Performance
Rated speedDDR2 800 (PC2 6400)
Memory
CAS latencyCL6
ECC supportNo
Buffer typeUnbuffered
Kit configurationDual Channel Kit
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Recommended forDesktops
More details
LED lightingNone

Other versions of this model

1 more in the same range

Questions about this item

What speed does the DDR2 800 PC2-6400 rating cap the modules at in practice?

The kit runs at DDR2 800 with a PC2-6400 bandwidth ceiling and CL6 latency, so the memory controller will not push data faster than that specification allows.

What physical slot and pin count do these 240-pin UDIMMs need to fit?

Each module is a 240-pin unbuffered DIMM, so it requires a standard desktop DDR2 DIMM slot with the matching key notch; the black PCB has no heat spreader to clear oversized CPU coolers.

How are the two sticks installed for dual-channel operation, and what step do people often miss?

Insert one stick into each matched-colour slot pair, press down until both side clips click, then verify the BIOS reports 4 GB in dual-channel mode — skipping the second slot or mixing channels is the common error.

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