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Four green DDR3 ECC registered DIMMs with gold contacts

OWC

OWC 32GB (4x8GB) DDR3 1600 ECC Registered RDIMM HP Z620

SKU CH-3GGS-XR57W

32GB kit of four 8GB DDR3 1600 ECC registered RDIMMs for HP Z620 workstations

  • Total capacity32 GB (4 × 8 GB)
  • Rated speedDDR3 1600 (PC3 12800)
  • CAS latencyCL11
  • Rated voltage1.5 V
  • Buffer typeRegistered
  • Memory rank1Rx4

Capacity 32GB (4 x 8GB)

  • ECC registered design protects data integrity in workstations
  • 32 GB kit (4 × 8 GB) expands Z620 memory capacity
  • DDR3 1600 CL11 matches factory speed specification
  • 5 V operation meets original voltage requirement
  • Replaces HP part numbers 647651081, 647651181, 647879B21, 647899B21, 647899B212, 664691001, 676333B21, 676490181, 676812001, 687462001

OWC 32GB DDR3 ECC Registered Kit

This 32 GB kit contains four 8 GB DDR3 1600 modules built to PC3-12800 CL11 timings. They are 240-pin registered DIMMs with ECC and a 1Rx4 organisation, designed specifically for the HP Workstation Z620.

DDR3 1600 Registered ECC Limits

The DDR3 1600 registered ECC standard tops out at 1600 MT/s and requires a platform that supports registered signalling and error correction. Standard desktop boards cannot use these modules and they must not be mixed with unbuffered DIMMs.

Installing In The HP Z620

Shut down the workstation, open the chassis and populate the approved memory slots following the Z620 service guide. The most common issue is mixing registered and unbuffered DIMMs, which prevents the system from posting.

How it compares

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

Price $91.99
Cheaper than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB (4 × 8 GB)
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $2.87 per GB
Cheaper than about 90% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameOWC
Part number1R6D31R4032S
Total capacity32 GB (4 × 8 GB)
Product type240-Pin DDR3 ECC RDIMM
Performance
Rated speedDDR3 1600 (PC3 12800)
Memory
CAS latencyCL11
ECC supportYes
Buffer typeRegistered
Memory rank1Rx4
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsHP Workstation Z620

Other versions of this model

5 more in the same range

Questions about this item

Should I choose this 32 GB kit or a smaller capacity for my HP Z620?

This kit provides 32 GB across four 8 GB modules, filling four slots on the Z620. If the workstation has eight slots you can add another identical kit later for 64 GB total.

What does the 1600 MHz rating mean once the modules are installed in the Z620?

The memory runs at DDR3 1600 (PC3-12800) with CL11 latency at 1.5 V, delivering the rated throughput the Z620 memory controller supports.

Is the 240-pin registered ECC interface compatible with standard desktop motherboards?

No. These are 240-pin DDR3 ECC registered DIMMs (1Rx4) designed for workstation and server platforms; they will not work in unbuffered desktop boards.

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