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Two green 240-pin DDR2 DIMM modules without heat spreaders

Computer Memory Solutions

Computer Memory Solutions CM256645300DIMMDR 4GB (2x2GB) DDR2 667MHz PC2-5300 CL5 240-pin DIMM

SKU CH-G64C-G3120

A 4 GB DDR2 kit with two 2 GB unbuffered DIMMs rated at 667 MHz CL5 for Dell OptiPlex GX620 desktops

  • Total capacity4 GB (2 × 2 GB)
  • Rated speedDDR2 667 (PC2 5300)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL5
  • Memory timings5-5-5
  • Rated voltage1.8 V
  • 4GB kit upgrades Dell OptiPlex GX620 systems
  • DDR2 667MHz speed matches PC2-5300 specification
  • CL5 latency with 5-5-5 timing for stable operation
  • 8V unbuffered non-ECC modules install in 240-pin slots
  • Two 2GB sticks populate dual-channel configuration

Genuine CMS 4GB DDR2 Kit

Computer Memory Solutions supplies this 4GB kit as two 2GB modules built to the PC2-5300 standard at 667MHz with CL5 timing. The sticks are 240-pin unbuffered DIMMs running at 1.8V and use major-brand chips without heat spreaders. They are validated for the Dell Optiplex GX620 in DT, MT and SFF chassis.

Suitable for GX620 upgrades only

The kit targets owners of a Dell Optiplex GX620 desktop who need a matched pair to populate two of the four available slots. It is not for systems that require ECC or registered memory. It is also not for machines that cannot accept 240-pin DDR2 modules.

PC2-5300 667MHz CL5 specification

The decisive figure is the DDR2 667MHz PC2-5300 rating with 5-5-5 timing at 1.8V. If the motherboard calls for a different speed, voltage or pin count these modules will not seat or will not post.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 92% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB (2 × 2 GB)
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $4.50 per GB
Cheaper than about 81% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM256645300DIMMDR
Total capacity4 GB (2 × 2 GB)
Product type240-Pin DDR2 SDRAM
Performance
Rated speedDDR2 667 (PC2 5300)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL5
Memory timings5-5-5
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsDell Optiplex Gx620 Dt / Mt / Sff
In the box
Included items2 Memory RAM Sticks

Questions about this item

Will the 240-pin DDR2 DIMMs fit the four memory sockets on my OptiPlex GX620 DT, MT or SFF?

Yes, the kit is built for that exact system and its four DDR2 slots; the 240-pin form factor matches the motherboard sockets.

Can I keep my existing PC2-5300 modules and add this 2 x 2 GB kit without speed conflicts?

All sticks will run at 667 MHz CL5; mixing identical-speed DDR2 modules is supported by the GX620 memory controller.

How can I confirm the new memory is recognised after installation?

Power on the GX620, enter the BIOS setup and check the memory summary — it should list 4 GB total across the populated slots.

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