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Green rectangular DDR2 SODIMM module with black memory chips and gold contacts

Computer Memory Solutions

Computer Memory Solutions CM256646400SO 2GB DDR2 800MHz SODIMM for Asus Eee PC 900 900 XP 900A memory upgrade

SKU CH-P5R7-TR1YC

2 GB DDR2 800 MHz SODIMM upgrades Asus Eee PC 900 series to its 2 GB maximum

  • Capacity2GB
  • Type200-Pin DDR2 SO-DIMM
  • SpeedDDR2 800 (PC2 6400)
  • CAS LatencyCL6
  • Timing6-6-6
  • Voltage1.8V
  • 2 GB capacity expands Eee PC 900 memory to the system maximum
  • DDR2 800 MHz (PC2-6400) matches the platform memory bus specification
  • CL6 6-6-6 timing delivers responsive access for the Atom platform
  • 8 V unbuffered non-ECC SO-DIMM installs directly in the single 200-pin slot
  • CMS lifetime warranty backs the upgrade when purchased from the manufacturer

2GB DDR2 800MHz SODIMM upgrade

This 2GB DDR2 SO-DIMM runs at 800MHz with CL6 timings and 1.8V operation. It is built specifically for the Asus Eee PC 900, 900 XP and 900A netbooks. The unbuffered, non-ECC module uses major-brand chips on a 200-pin PCB.

Low-power DDR2 thermals

Operating at 1.8V, the stick draws minimal power and produces negligible heat inside the compact netbook chassis. No heat spreader is fitted, yet the low voltage keeps temperatures well within the system's passive cooling limits. Silent operation is maintained because the original fan profile does not need to ramp up.

Sustained load at 667MHz bus

Although rated for 800MHz, the Intel Atom processor limits the memory bus to 667MHz in these models. Under continuous workloads the module runs stably at the lower bus speed without throttling or errors. BIOS must be updated after installation so the system correctly reports the full 2048MB capacity.

Highlights

  • 2 GB capacity expands Eee PC 900 memory to the system maximum
  • DDR2 800 MHz (PC2-6400) matches the platform memory bus specification
  • CL6 6-6-6 timing delivers responsive access for the Atom platform
  • 8 V unbuffered non-ECC SO-DIMM installs directly in the single 200-pin slot
  • CMS lifetime warranty backs the upgrade when purchased from the manufacturer

Specifications

BrandComputer Memory Solutions
ModelCM256646400SO
Capacity2GB
Type200-Pin DDR2 SO-DIMM
SpeedDDR2 800 (PC2 6400)
CAS LatencyCL6
Timing6-6-6
Voltage1.8V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
ChipsetMajor Brand Chipset
Heat SpreaderNo
Compatible SystemAsus Eee Pc 900, Eee Pc 900 Xp, Eee Pc 900A
Package Content1 Memory RAM Stick

Questions about this item

How do I install the 200-pin DDR2 SO-DIMM in my Asus Eee PC 900 and which step is often missed?

Insert the module at an angle into the single SODIMM slot until it clicks, then press "F2" at boot to enter BIOS and verify "Installed Size : 2048MB" appears; save and exit so the system recognises the full 2GB instead of showing only 0.99GB.

What maintenance or replacement will this 2GB DDR2 800MHz module need over time?

No routine maintenance is required; the unbuffered non-ECC stick has no heat spreader and carries a limited lifetime warranty from the manufacturer, so replacement is only necessary if a memory error appears.

What speed limit appears first when this memory runs under sustained load in the Eee PC 900?

The Intel Atom processor caps the memory bus at 667MHz, so the module will operate at that lower frequency despite its 800MHz rating.

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