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Green circuit board with gold contacts and black memory chips

OWC

OWC 4GB DDR3 1066 PC3-8500 CL7 2Rx8 240-pin 1.5V Non-ECC UDIMM for HP 4000 Pro

SKU CH-1SN1-PYTPG

A 4GB DDR3 1066MHz CL7 UDIMM module validated for the HP 4000 Pro desktop

  • Total capacity4 GB
  • Rated speedDDR3 1066 (PC3 8500)
  • CAS latencyCL7
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • Boosts HP 4000 Pro responsiveness with 4GB DDR3 1066MHz CL7 module
  • Meets JEDEC and RoHS standards for warranty-safe upgrade
  • Simple DIY installation upgrades desktop or workstation in minutes
  • Unbuffered non-ECC 2Rx8 design ensures broad system compatibility
  • Tested to exceed OEM specs for reliable long-term operation

OWC 4GB DDR3 for HP 4000 Pro

This single 4GB DDR3 1066 PC3-8500 CL7 module targets owners of the HP 4000 Pro desktop who need a straightforward memory increase. The 240-pin UDIMM runs at 1.5V and uses a 2Rx8 unbuffered non-ECC design. It is built to JEDEC and ROHS standards for a warranty-safe upgrade.

No extra accessories or software included

The package contains only the memory stick itself; no heat spreader, tools or installation media are supplied. OWC provides a limited lifetime warranty and free technical support, but those services are separate from the physical product. The module is tested in-house to meet OEM specifications before shipping.

DDR3 1066 limits bandwidth to PC3-8500

The DDR3 1066 interface caps theoretical throughput at PC3-8500, which restricts performance in modern multi-threaded workloads. Systems requiring ECC error correction or registered buffering cannot use this stick. Builders needing higher capacities or faster speeds must select a different memory generation.

How it compares

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

Price $19.99
Cheaper than about 91% 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 $5.00 per GB
Cheaper than about 77% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number8U5D32R804 GB
Total capacity4 GB
Product type240-Pin DDR3 Non-ECC UDIMM
Performance
Rated speedDDR3 1066 (PC3 8500)
Memory
CAS latencyCL7
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsHP 4000 Pro

Other versions of this model

5 more in the same range

Questions about this item

Will the 240-pin DDR3 module need replacement if I later add more than 4GB?

The 4GB 2Rx8 DIMM occupies one slot; you can add matching DDR3 1066 modules up to the HP 4000 Pro’s maximum supported capacity without removing this one.

What limit appears first during sustained heavy workloads on this PC3-8500 CL7 stick?

The 1066 MHz data rate and CL7 latency set the throughput ceiling; the memory controller will hit that bandwidth wall before voltage or thermal limits become a factor.

How much heat or noise does the 1.5 V unbuffered DIMM produce running all day?

With no heat spreader and standard 1.5 V JEDEC operation, the module adds minimal heat and zero audible noise; system fans handle any extra warmth.

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