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Green rectangular DDR3 DIMM with black chips on both sides, 240 gold pins along bottom edge

OWC

OWC 2GB DDR3 1333 PC3-10600 CL9 1Rx8 240-pin 1.5V Non-ECC UDIMM memory upgrade for Dell OptiPlex 990

SKU CH-59WC-G3473

A 2 GB DDR3 1333 MHz CL9 UDIMM upgrade for Dell OptiPlex 990 desktop, SFF, Tower and USFF systems

  • Capacity2GB
  • Type240-Pin DDR3 Non-ECC UDIMM
  • SpeedDDR3 1333 (PC3 10600)
  • CAS LatencyCL9
  • Voltage1.5V
  • ECCNo
  • Boosts system responsiveness with 2GB DDR3 1333MHz memory
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Tested to meet or exceed Dell OptiPlex 990 OEM specifications
  • Single 1Rx8 rank 240-pin UDIMM at 1.5V for broad compatibility
  • Easy DIY installation fits Desktop, SFF, Tower and USFF models

Dell OptiPlex 990 Memory Upgrade

This 2GB DDR3 module is built specifically for Dell OptiPlex 990 Desktop, SFF, Tower and USFF systems. It installs directly into a 240-pin UDIMM slot without configuration changes. The single rank 1Rx8 design ensures broad compatibility across the supported chassis types.

JEDEC Standard DDR3 1333 Replacement

The module matches the PC3-10600 CL9 1.5V specification required by the platform. It replaces an existing stick or fills an empty slot to increase total system memory. The jump is worth it when the current capacity limits multitasking or forces excessive paging to disk.

Office PCs Needing Basic Capacity Boost

Suits administrators extending the service life of OptiPlex 990 fleets running standard business applications. Not for workloads that demand more than a single 2GB module can provide, systems requiring ECC error correction, or builds targeting higher memory frequencies.

Highlights

  • Boosts system responsiveness with 2GB DDR3 1333MHz memory
  • JEDEC and RoHS compliant for warranty-safe upgrades
  • Tested to meet or exceed Dell OptiPlex 990 OEM specifications
  • Single 1Rx8 rank 240-pin UDIMM at 1.5V for broad compatibility
  • Easy DIY installation fits Desktop, SFF, Tower and USFF models

Specifications

BrandOWC
Part Number1U3D31R802GB
Capacity2GB
Type240-Pin DDR3 Non-ECC UDIMM
SpeedDDR3 1333 (PC3 10600)
CAS LatencyCL9
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank1Rx8
Heat SpreaderNo
Compatible SystemDell OptiPlex 990 Desktop
Dell OptiPlex 990 SFF
Dell OptiPlex 990 Tower
Dell OptiPlex 990 USFF

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Questions about this item

Will this 240-pin DDR3 UDIMM fit the memory slots in my Dell OptiPlex 990 SFF or USFF chassis?

Yes, the 240-pin DDR3 UDIMM form factor matches the standard desktop DIMM sockets used across the OptiPlex 990 Desktop, SFF, Tower and USFF models, so the module seats directly without an adapter.

What is the correct way to seat the 240-pin module so the retention clips lock on both ends?

Align the notch on the module's gold edge with the key in the slot, press down firmly and evenly until both side clips snap into the notches automatically; the common error is pressing only one corner, which leaves the opposite clip unlatched.

If I need to replace this module later, what exact specification should I match?

Match a single 2GB DDR3 1333 PC3-10600 CL9 1Rx8 240-pin 1.5V Non-ECC Unbuffered UDIMM to keep identical timing, voltage and rank configuration.

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