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Green circuit board with gold contacts and black memory chips

OWC

OWC 4GB DDR3 1600 PC3-12800 CL11 1Rx8 240-pin 1.5V HP ProDesk 400 G1 G2 405 490 Tower SFF memory upgrade

SKU CH-BJ8G-F6P8M

A 4 GB DDR3 1600 module for HP ProDesk 400 G1, 400 G2, 405 G1 and 490 G1 towers

  • Total capacity4 GB
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeUnbuffered
  • Memory rank1Rx8
  • Boosts PC responsiveness with 4GB DDR3 1600 memory
  • JEDEC-standard 1.5V module ensures warranty-safe upgrade
  • CL11 timing optimises multitasking across HP ProDesk towers
  • Single 1Rx8 rank 240-pin DIMM simplifies DIY installation
  • Tested to exceed OEM specs for HP ProDesk 400 G1 G2 405 490

HP ProDesk DDR3 Upgrade

This OWC module adds 4 GB of DDR3 1600 memory to compatible HP ProDesk 400 G1 SFF, 400 G1 Tower, 400 G2 Tower, 405 G1 Tower and 490 G1 Tower systems. It is a 240-pin non-ECC unbuffered DIMM rated at 1.5 V with CL11 latency. The single-rank 1Rx8 design installs in a standard desktop DIMM slot.

Office and home PC owners

The upgrade suits users who want a straightforward capacity increase for everyday multitasking on the listed ProDesk models. Buyers whose systems require ECC, registered DIMMs or a different pin count cannot use this module. Those needing more than 4 GB per slot should consider higher-capacity alternatives.

DDR3 1600 CL11 1.5 V specification

The decisive specification is the DDR3 1600 (PC3-12800) CL11 1.5 V unbuffered non-ECC standard. Only systems designed for this exact voltage, speed and timing will operate correctly with the module. Verifying the motherboard supports DDR3 1600 at 1.5 V ensures compatibility.

How it compares

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

Price $17.99
Cheaper than about 92% 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 $4.50 per GB
Cheaper than about 81% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1U6D31R804 GB
Total capacity4 GB
Product type240-Pin DDR3 Non-ECC UDIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Memory
CAS latencyCL11
ECC supportNo
Buffer typeUnbuffered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsHP ProDesk 400 G1 SFF
HP ProDesk 400 G1 Tower
HP ProDesk 400 G2 Tower
HP ProDesk 405 G1 Tower
HP ProDesk 490 G1 Tower

Other versions of this model

5 more in the same range

Questions about this item

What real-world difference will 1600 MHz DDR3 make in my ProDesk?

The 1600 MHz DDR3 module runs at PC3-12800 with CL11 latency, so the system can move data between CPU and memory at the full JEDEC-rated throughput for this platform, improving multitasking and large-file handling.

Does the 240-pin DDR3 interface limit the speed or capacity I can use?

The 240-pin DDR3 UDIMM slot caps the bus at the module's rated 1600 MHz and 1.5 V; the board cannot run faster DDR3 or any later generation, and each slot accepts one unbuffered non-ECC DIMM.

Will this stick fit the small-form-factor ProDesk 400 G1 SFF?

Yes, the standard-height 240-pin DIMM is the exact form factor used in the ProDesk 400 G1 SFF, 400 G1 Tower, 400 G2 Tower, 405 G1 Tower and 490 G1 Tower.

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