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Green 240-pin DDR2 DIMM module, black chips, no heat spreader

Computer Memory Solutions

Computer Memory Solutions CM256645300DIMMDR 2GB DDR2 667MHz memory upgrade

SKU CH-NA12-X3ZMS

A 2 GB DDR2-667 non-ECC DIMM validated for Dell OptiPlex 210L, 320, 330, 740, 745 and 755 desktops

  • Capacity2GB
  • Type240-Pin DDR2 SDRAM
  • SpeedDDR2 667 (PC2 5300)
  • CAS LatencyCL5
  • Timing5-5-5
  • Voltage1.8V
  • 2GB capacity adds responsive multitasking headroom
  • DDR2 667MHz PC2-5300 speed matches system bus
  • Non-ECC unbuffered 240-pin DIMM fits Dell OptiPlex slots
  • CL5 5-5-5 timings deliver stable data throughput
  • 8V operation keeps power draw low

Compatible Dell OptiPlex upgrade

This 2GB DDR2 module is built for Dell OptiPlex 210L 320 330 740 745 755 desktops. It targets owners who need a single stick to fill an empty slot or replace a failed one. Systems requiring ECC or registered memory cannot use it.

DDR2 667 PC2-5300 ceiling

The DDR2 interface tops out at 667 MHz with CL5 timing and 1.8V operation. Bandwidth is limited to the PC2-5300 standard so heavier workloads will hit that ceiling quickly. A 64-bit operating system is required to address more than 4GB in total.

Simple DIMM installation

The 240-pin unbuffered DIMM drops into any free slot without tools. Modules may be installed one at a time but must be added in like pairs to enable dual-channel mode. If 4GB is installed the system may recognise only 3.5GB or less depending on configuration.

Highlights

  • 2GB capacity adds responsive multitasking headroom
  • DDR2 667MHz PC2-5300 speed matches system bus
  • Non-ECC unbuffered 240-pin DIMM fits Dell OptiPlex slots
  • CL5 5-5-5 timings deliver stable data throughput
  • 8V operation keeps power draw low

Specifications

BrandComputer Memory Solutions
ModelCM256645300DIMMDR
Capacity2GB
Type240-Pin DDR2 SDRAM
SpeedDDR2 667 (PC2 5300)
CAS LatencyCL5
Timing5-5-5
Voltage1.8V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemDell Optiplex 210L 320 330 740 745 755
Package Content1 Memory RAM Stick

Questions about this item

Should I buy one 2 GB stick or add a second to reach 4 GB?

The Dell OptiPlex models listed accept 4 GB or 8 GB maximum. Install modules in matched pairs to enable dual-channel mode; a single 2 GB stick works but leaves bandwidth on the table.

What does the 667 MHz rating deliver inside an OptiPlex 755?

The module runs at PC2-5300 DDR2-667 with CL5 5-5-5 timing at 1.8 V, giving the rated throughput the platform’s chipset and memory controller can use.

Will this 240-pin DDR2 DIMM fit the OptiPlex 320’s memory slots?

Yes — it is a 240-pin unbuffered non-ECC DDR2 DIMM, the exact form factor and electrical spec those systems require.

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