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Four black DDR2 UDIMM modules in a kit

OWC

OWC 4GB (4x1GB) DDR2 667 CL5 1.8V Non-ECC UDIMM Kit

SKU CH-CM3F-WM9W9

Four 1 GB DDR2 667 CL5 1.8 V non-ECC UDIMMs add 4 GB in a dual-channel kit

  • Capacity4GB (4 x 1GB)
  • SpeedDDR2 667 (PC2 5300)
  • CAS LatencyCL5
  • Voltage1.8V
  • ECCNo
  • Buffered/RegisteredUnbuffered

Capacity 4GB (4 x 1GB)

  • Boost multitasking capacity with four 1 GB modules totalling 4 GB
  • Faster data throughput at DDR2 667 (PC2-5300) speed rating
  • Lower latency response from CL5 timing at 1.8 V operation
  • JEDEC and RoHS compliant for warranty-safe desktop upgrades
  • Easy dual-channel installation in 240-pin unbuffered DIMM slots

Ready for DDR2 Desktops

This OWC kit supplies four 1 GB unbuffered DIMMs for a total of 4 GB. It targets older desktop systems that still rely on DDR2 memory and need a straightforward capacity increase. The modules are non-ECC and operate at the standard 1.8 V.

JEDEC DDR2 667 limits

The kit conforms to the PC2-5300 JEDEC standard with a CL5 latency at 667 MT/s. Bandwidth and timing are fixed by that specification, so performance cannot exceed the DDR2 667 ceiling. Mixing faster or slower DDR2 modules will force the system to run at the lowest common speed.

Four-module dual-channel kit

The package contains four identical 1 GB sticks designed to populate two dual-channel pairs. Installing all four modules activates dual-channel mode on compatible motherboards, which is the single factor that determines whether this kit matches the board's slot layout and capacity needs.

Points forts

  • Boost multitasking capacity with four 1 GB modules totalling 4 GB
  • Faster data throughput at DDR2 667 (PC2-5300) speed rating
  • Lower latency response from CL5 timing at 1.8 V operation
  • JEDEC and RoHS compliant for warranty-safe desktop upgrades
  • Easy dual-channel installation in 240-pin unbuffered DIMM slots

Caractéristiques

BrandOWC
Part Number5U3D21R8004S
Capacity4GB (4 x 1GB)
SpeedDDR2 667 (PC2 5300)
CAS LatencyCL5
Voltage1.8V
ECCNo
Buffered/RegisteredUnbuffered
Multi-channel KitDual Channel Kit
ColorBlack
Heat SpreaderNo
Recommend UseDesktops
LED ColorNone

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Questions sur cet article

Should I pick the 4 GB kit with four 1 GB sticks or a different capacity?

This kit contains four 1 GB modules for a total of 4 GB; choose it when your board has four slots and you want the full 4 GB in a matched set.

What does the 667 speed rating mean once the memory is installed?

The modules run at DDR2 667 (PC2 5300) with CL5 latency at 1.8 V, delivering the standard bandwidth and timing for that specification.

Which interface and pin count does this DDR2 kit use, and what does that limit?

It uses the 240 pin DDR2 UDIMM interface, so it only fits motherboards designed for DDR2 memory.

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