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Three green DDR3 DIMMs with black chips no heat spreaders

Computer Memory Solutions

Computer Memory Solutions 12GB (3x4GB) DDR3-1333 ECC Unregistered DIMM Z600

SKU CH-XJJX-0QPBC

Three 4 GB DDR3-1333 ECC unregistered DIMMs adding 12 GB to HP Z600 workstations in triple-channel mode

  • Total capacity12 GB (3 × 4 GB)
  • Rated speedDDR3 1333 (PC3 10600)
  • ChipsetMajor Brand Chipset
  • CAS latencyCL9
  • Memory timings9-9-9
  • Rated voltage1.5 V
  • 12 GB triple-channel kit for HP Z600 workstations
  • ECC unregistered DIMMs protect data integrity
  • 1333 MHz DDR3 speed with CL9 latency
  • 5 V standard voltage for broad compatibility
  • Three matched 4 GB modules install across all channels

HP Z600 triple-channel kit

This 12 GB kit contains three 4 GB DDR3-1333 ECC unregistered DIMMs built for the HP Workstation Z600. Each module runs at 1.5 V with CL9 9-9-9 timing and uses a 2Rx8 organisation. The 240-pin sticks are designed for triple-channel interleaving across the three slots per CPU.

Upgrading from smaller or mixed kits

Replacing mismatched or lower-capacity modules with this matched trio restores full triple-channel bandwidth and avoids the 3.5 GB recognition limit seen with single 4 GB sticks. The jump is worthwhile when the workstation runs a 64-bit OS and needs the full 12 GB addressable space for memory-intensive workloads.

Installing three matched DIMMs

Populate all three channels of one CPU for optimal interleaving; the system also accepts modules one at a time but loses the triple-channel benefit. Do not mix these unregistered ECC DIMMs with registered ECC modules in the same bank, and verify the board uses the C2 revision of the Intel 5520 chipset if registered memory is ever considered.

How it compares

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

Price $74.99
Cheaper than about 71% of the 21,161 comparable items (median $397.99).
Total capacity 12 GB (3 × 4 GB)
Lower than about 75% of the 20,941 comparable items (median 32 GB).
Price per GB $6.25 per GB
Cheaper than about 63% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameComputer Memory Solutions
Model nameCM5127210600ECCNRH2R8
Total capacity12 GB (3 × 4 GB)
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 1333 (PC3 10600)
Processor
ChipsetMajor Brand Chipset
Memory
CAS latencyCL9
Memory timings9-9-9
ECC supportYes
Buffer typeUnregistered
Memory rank2Rx8
Heat spreaderNo
Power
Rated voltage1.5 V
Compatibility
Compatible systemsHp/Compaq Workstation Z600
In the box
Included items3 Memory RAM Sticks

Questions about this item

Will the 240-pin DDR3 DIMMs fit the Z600's three-channel memory layout?

Yes — the kit provides three 4 GB modules that populate one bank of three sockets per CPU for triple-channel operation on the Z600.

Do I need to install all three sticks at once, or can I add them one at a time?

Modules may be installed one at a time, but for best performance populate all three channels so the memory controller can interleave across them.

Does the ECC unregistered design require any special BIOS setting or firmware revision on the Z600?

The Z600 supports either registered or unbuffered ECC; no extra BIOS step is needed for these unregistered modules.

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