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Green printed circuit board with black memory chips and gold edge connectors

OWC

OWC 4GB DDR3 1066 PC3-8500 CL7 2Rx8 240-pin 1.5V Non-ECC UDIMM for Dell OptiPlex 780

SKU CH-FYKK-20KZ8

4GB DDR3 1066MHz CL7 UDIMM for Dell OptiPlex 780 desktop, SFF and tower systems

  • Capacity4GB
  • Type240-Pin DDR3 Non-ECC UDIMM
  • SpeedDDR3 1066 (PC3 8500)
  • CAS LatencyCL7
  • Voltage1.5V
  • ECCNo
  • Boosts multitasking with 4GB DDR3 1066MHz capacity
  • Ensures Dell OptiPlex 780 compatibility across Desktop SFF Tower
  • Meets JEDEC and RoHS standards for warranty-safe upgrade
  • Simple DIY installation with 240-pin unbuffered DIMM design
  • Operates efficiently at 1.5V CL7 latency specification

Dell OptiPlex 780 memory upgrade

This 4GB DDR3 module is built for the OptiPlex 780 Desktop, SFF and Tower. It runs at 1066 MHz with CL7 latency and 1.5 V. The unbuffered non-ECC DIMM fits the standard 240-pin desktop slot.

Suits owners of a compatible OptiPlex 780 wanting

Buyers with a different motherboard or a laptop should look elsewhere. Systems that require ECC or registered memory cannot use this module. The single 4 GB stick may not fill every slot on a multi-channel board.

Installation is a straightforward DIY task

Open the case, align the notch and press until the clips lock. Common issues include forgetting to seat the module fully or mixing speeds across slots. The JEDEC-standard part is designed to work without BIOS changes.

Helstu kostir

  • Boosts multitasking with 4GB DDR3 1066MHz capacity
  • Ensures Dell OptiPlex 780 compatibility across Desktop SFF Tower
  • Meets JEDEC and RoHS standards for warranty-safe upgrade
  • Simple DIY installation with 240-pin unbuffered DIMM design
  • Operates efficiently at 1.5V CL7 latency specification

Tæknilýsing

BrandOWC
Part Number8U5D32R804GB
Capacity4GB
Type240-Pin DDR3 Non-ECC UDIMM
SpeedDDR3 1066 (PC3 8500)
CAS LatencyCL7
Voltage1.5V
ECCNo
Buffered/RegisteredUnbuffered
Rank2Rx8
Heat SpreaderNo
Compatible SystemDell OptiPlex 780 Desktop
Dell OptiPlex 780 SFF
Dell OptiPlex 780 Tower

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Does the Dell OptiPlex 780 motherboard need a free 240-pin DDR3 DIMM slot for this 4 GB module?

Yes, the module is a 240-pin DDR3 UDIMM and requires an empty DDR3 DIMM slot on the OptiPlex 780 desktop, SFF or tower.

Can this PC3-8500 CL7 stick run with existing PC3-8500 memory at the same speed and latency?

The module operates at DDR3-1066 with CL7 timing; when paired with identical PC3-8500 CL7 DIMMs it will run at the common 1066 MHz speed and CL7 latency.

How can I confirm the module is detected at its rated 4 GB capacity after installation?

Boot the OptiPlex 780 and check the BIOS memory summary or Windows Task Manager — both should report the full 4 GB capacity for the new DIMM.

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