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Green circuit board DDR2 memory module with black chips

Computer Memory Solutions

Computer Memory Solutions CM512646400DIMM2R8 4GB DDR2 800MHz memory upgrade

SKU CH-10MN-2TS30

4GB DDR2 800MHz unbuffered DIMM compatible with HP/Compaq dc7900 SFF/CMT/MT desktops

  • Total capacity4 GB
  • Rated speedDDR2 800 (PC2 6400)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL6
  • Memory timings6-6-6
  • Rated voltage1.8 V
  • 4 GB capacity expands system memory for HP dc7900
  • DDR2 800 MHz speed matches PC2-6400 specification
  • CL6 latency with 6-6-6 timing supports responsive operation
  • 8 V unbuffered non-ECC design fits standard desktop slots
  • 240-pin DIMM form factor installs directly into compatible motherboards

Targeted DDR2 upgrade for HP dc7900

This 4 GB DDR2-800 module is built for HP Compaq Business Desktop dc7900 SFF CMT and MT systems. It uses a 240-pin unbuffered non-ECC DIMM running at 1.8 V with CL6 timing. The single stick installs directly into one of the four available slots.

Suited for dc7900 owners adding memory

Buyers who need to increase memory on a compatible dc7900 desktop will find this module matches the required specification. It is not for systems that require ECC or registered DIMMs. It is not for platforms that use a different DDR generation or a different pin count.

4 GB DDR2-800 CL6 240-pin specification

The decisive specification is the 4 GB DDR2-800 CL6 unbuffered non-ECC 240-pin DIMM at 1.8 V. Only systems that accept this exact combination will operate correctly with this module.

How it compares

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

Price $70.99
Cheaper than about 72% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $17.75 per GB
Pricier than about 64% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM512646400DIMM2R8
Total capacity4 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 rank2Rx8
Heat spreaderNo
Power
Rated voltage1.8 V
Compatibility
Compatible systemsHp/Compaq Business Desktop Dc7900 Sff/Cmt/Mt
In the box
Included items1 Memory RAM Stick

Questions about this item

Will the 240-pin DDR2 DIMM fit the four slots in my HP dc7900 SFF, CMT or MT?

Yes, the module matches the 240-pin DDR2 layout used by all three dc7900 chassis variants and the board provides four DIMM sockets.

What is the correct way to seat this 240-pin DDR2 stick so it locks in place?

Align the notch with the slot key, press straight down until both side clips snap shut, then verify the stick does not rock.

When should I replace this 4 GB DDR2 module?

Replace it if the system fails to POST with only this stick installed or if memory diagnostics report uncorrectable errors.

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