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Green circuit board with black memory chips and gold edge connectors

OWC

OWC 4GB DDR3 1333 PC3-10600 CL9 2Rx8 240-pin 1.5V Non-ECC UDIMM Alienware X51

SKU CH-W7Y1-PSHAD

A 4 GB DDR3 1333 MHz module with CL9 latency and 1.5 V operation, designed for the Alienware X51 desktop

  • Total capacity4 GB
  • Rated speedDDR3 1333 (PC3 10600)
  • CAS latencyCL9
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Memory rank2Rx8
  • 4GB capacity adds headroom for multitasking
  • DDR3 1333 speed matches Alienware X51 specs
  • CL9 latency keeps data flowing smoothly
  • 5V operation fits standard desktop power
  • 240-pin UDIMM slots straight into your system

Alienware X51 memory upgrade

This 4GB DDR3 module is built specifically for the Alienware X51 desktop. It delivers a straightforward capacity increase for owners of that system who need more memory for everyday multitasking. The JEDEC-standard design ensures compatibility without requiring configuration changes.

Single 240-pin UDIMM fits existing slot

The unbuffered non-ECC DIMM installs directly into a standard 240-pin DDR3 slot on the X51 motherboard. No heat spreader is fitted so clearance stays minimal inside the compact chassis. The 1.5V operating voltage matches the platform's stock memory power rail.

Steady throughput at CL9 1333MHz

Rated at PC3-10600 with CAS latency 9, the module maintains consistent bandwidth during extended workloads such as large file edits or multi-tab browsing. The 2Rx8 organisation supports stable dual-rank operation without throttling under sustained use.

How it compares

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

Price $20.99
Cheaper than about 90% 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 $5.25 per GB
Cheaper than about 73% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameOWC
Part number1U3D32R804 GB
Total capacity4 GB
Product type240-Pin DDR3 Non-ECC UDIMM
Performance
Rated speedDDR3 1333 (PC3 10600)
Memory
CAS latencyCL9
ECC supportNo
Buffer typeUnbuffered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsAlienware X51

Other versions of this model

5 more in the same range

Questions about this item

Will the 1333 MHz DDR3 speed limit throughput during long sessions?

The module runs at the standard DDR3 1333 (PC3-10600) rate with CL9 latency, so bandwidth is capped at that specification during sustained use.

Does the stick run hot or draw extra power when the Alienware X51 is on all day?

It operates at the standard 1.5 V without a heat spreader and is unbuffered non-ECC, so thermal output and power draw stay within normal DDR3 limits.

What must the Alienware X51 already have for this 240-pin UDIMM to work?

The system needs a free 240-pin DDR3 DIMM slot that accepts 1.5 V unbuffered non-ECC memory; the X51 desktop platform provides that.

More in Model-Specific Memory Upgrades

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