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Green rectangular DDR3 DIMM module with black memory chips and gold edge contacts

IBM

IBM 43X5070 8GB DDR3-1066 ECC Registered DIMM server RAM

SKU CH-C8MJ-2ZQ5E MPN 43X5070

8GB DDR3-1066 ECC registered DIMM module for IBM System x3690 X5 servers

  • Total capacity18 GB
  • Rated speedDDR3 SDRAM
  • CAS latencyCL7
  • ECC supportECC
  • Buffer typeRegistered
  • Product type240-Pin DDR3 SDRAM
  • 8GB capacity supports demanding server workloads
  • DDR3-1066 speed delivers 1066 MHz data rates
  • ECC registered design protects data integrity
  • CL7 latency enables responsive memory access
  • Compatible with IBM System x3690 X5 Server

8 GB DDR3-1066 ECC Registered DIMM

This IBM 43X5070 module delivers 8 GB of DDR3 server memory at 1066 MHz with CL7 latency. It operates at 1.50 V and uses a 240-pin DIMM form factor. The registered design and ECC support target data-integrity workloads on compatible platforms.

Replaces non-ECC or slower DDR3 modules

Upgrading from standard unbuffered DDR3 adds error correction and signal buffering for multi-DIMM configurations. The jump is worth it when the platform requires registered DIMMs and the workload demands ECC protection for continuous operation.

Fits IBM System x3690 X5 Server

This single 8 GB DIMM installs in a 240-pin DDR3 slot on the qualified server. Registered signalling reduces electrical load on the memory controller, freeing headroom for additional modules within the platform's supported population rules.

How it compares

Measured against everything we stock in ECC Server RAM, at today’s prices. Recalculated every night.

Price $485.99
Pricier than about 70% of the 6,523 comparable items (median $188.99).
Total capacity 18 GB
Lower than about 59% of the 6,064 comparable items (median 32 GB).
Price per GB $27.00 per GB
Pricier than about 88% of the 6,064 comparable items (median $7.25 per GB).

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Specifications

Product
Brand nameIBM
Total capacity18 GB
Product type240-Pin DDR3 SDRAM
Performance
Rated speedDDR3 SDRAM
Memory
CAS latencyCL7
ECC supportECC
Buffer typeRegistered
Size & build
Shipping weight0.23 kg
Package size178 × 51 × 13 mm

Questions about this item

Will the 240-pin DIMM fit my IBM System x3690 X5 server?

Yes — the module is a standard 240-pin DDR3 DIMM built for the System x3690 X5, so it seats directly in the server's memory slots.

What is the correct way to seat this registered ECC module, and what step do installers often miss?

Align the notch with the slot key, press firmly until both side latches click, and verify the system recognises the full 8 GB at 1066 MHz; the step often missed is fully engaging both latches.

When should I plan to replace this 1.50 V DDR3-1066 CL7 module?

Replace it if memory diagnostics report correctable ECC errors that increase over time, or when a firmware update requires a higher speed than 1066 MHz.

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