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Two green DDR2 memory sticks with black chips

Computer Memory Solutions

Computer Memory Solutions CM128646400DIMMSR 2GB (2x1GB) DDR2 800MHz memory upgrade

SKU CH-90S5-DJXJB

A 2 GB DDR2 kit containing two 1 GB modules running at 800 MHz with CL6 timing for compatible Intel motherboards

  • Total capacity2 GB (2 × 1 GB)
  • Rated speedDDR2 800 (PC2 6400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL6
  • Memory timings6-6-6
  • Rated voltage1.8 V
  • 2 GB dual-channel kit boosts multitasking headroom
  • DDR2 800 MHz PC2-6400 speed matches board spec
  • CL6 6-6-6 timing at 1.8 V keeps latency low
  • Unbuffered non-ECC 240-pin DIMMs fit Intel DG965/DP43TF boards
  • Major-brand chips backed by CMS lifetime warranty

System-Specific 2GB DDR2 Kit

This 2 GB kit from Computer Memory Solutions contains two 1 GB DDR2 SDRAM DIMMs rated at 800 MHz (PC2-6400). The modules are unbuffered, non-ECC, run at 1.8 V and carry CL6 6-6-6 timings. They are built for the Intel DG965RY, DG965SS, DG965WH and DP43TF motherboards listed by the supplier.

Suited for restoring listed Intel boards

The kit matches the exact speed, voltage and pin-out required by those four motherboards, so it works as a direct replacement or upgrade for systems using them. Builders working with any other platform, or anyone needing ECC, registered modules or a different DDR generation, should look elsewhere because this kit will not fit or function correctly in those scenarios.

DDR2 800 (PC2-6400) speed rating

The 800 MHz DDR2 rating is the single specification that determines whether the memory will operate at its rated frequency on the target motherboard. If the board supports DDR2 800 the modules run at full speed; if it only supports lower DDR2 rates the kit will still install but the memory controller will set a slower clock.

How it compares

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

Price $23.99
Cheaper than about 88% of the 21,161 comparable items (median $397.99).
Total capacity 2 GB (2 × 1 GB)
Lower than about 95% of the 20,941 comparable items (median 32 GB).
Price per GB $12.00 per GB
Pricier than about 57% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM128646400DIMMSR
Total capacity2 GB (2 × 1 GB)
Product type240-Pin DDR2 SDRAM
Performance
Rated speedDDR2 800 (PC2 6400)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL6
Memory timings6-6-6
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsIntel Dg965Ry, Dg965Ss, Dg965 Wh, Dp43Tf Motherboard
In the box
Included items2 Memory RAM Sticks

Questions about this item

My board has four DIMM slots and this kit contains two modules — do I need to fill all four slots for the memory to work?

No, the two 1 GB modules will operate in the two slots you populate; the remaining two slots can stay empty.

If I keep my existing DDR2 modules, will they run at the same 800 MHz speed as this PC2-6400 CL6 kit?

All installed modules run at the speed of the slowest kit, so older DDR2 memory will limit the 800 MHz modules to its lower frequency.

After installing both 1 GB sticks, how can I verify the system sees the full 2 GB at 800 MHz with CL6 timings?

Check the BIOS memory summary or a tool such as CPU-Z; it should report 2 GB total, 800 MHz frequency and 6-6-6 timings at 1.8 V.

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