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Green rectangular DIMM module with black chips and gold contacts

Lenovo

Lenovo 4ZC7A08709 32GB DDR4 2933 Registered Memory Upgrade

SKU CH-48V7-YAH37 MPN 4ZC7A08709

32 GB DDR4 2933 registered DIMM for Lenovo ThinkSystem servers including SR630, SR530, SR550, SR650, ST550, SR950, SR570 and SR85

  • Total capacity32 GB
  • Rated speedDDR4 2933 (PC4 23400)
  • Rated voltage1.2 V
  • Buffer typeRegistered
  • Memory rank2Rx4
  • 32 GB capacity for demanding server workloads
  • 2933 MHz DDR4 speed for high-throughput performance
  • Registered signal processing for stable multi-DIMM operation
  • 20 V voltage reduces power draw and heat
  • Validated compatibility across ThinkSystem SR630, SR530, SR550, SR650, ST550, SR950, SR570, SR85 servers

Lenovo ThinkSystem 32GB Registered DIMM

This Lenovo 4ZC7A08709 module adds 32GB of DDR4 2933 registered memory to compatible ThinkSystem servers. It is built for administrators expanding capacity in validated Lenovo platforms. Buyers needing unbuffered UDIMMs or consumer SO-DIMM form factors cannot use this part.

Thermal and power profile

Operating at 1.20V, the registered DIMM draws less power per gigabyte than earlier DDR4 modules while maintaining signal integrity across 288 pins. The register buffers address and command lines, reducing electrical load on the memory controller during sustained workloads. No active cooling is required beyond standard server airflow.

TruDDR4 authentication benefit

Each module carries a unique signature that the ThinkSystem firmware verifies at boot, enabling memory stretch goals only when genuine TruDDR4 DIMMs are detected. This authentication unlocks the full qualified-speed envelope across supported SR and ST platforms. Systems without TruDDR4 validation will not activate these extended timing parameters.

How it compares

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

Price $762.99
Pricier than about 57% of the 21,161 comparable items (median $397.99).
Total capacity 32 GB
Typical for this category: the median of 20,941 items is 32 GB.
Price per GB $23.84 per GB
Pricier than about 69% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameLenovo
Model name4ZC7A08709
Total capacity32 GB
Performance
Rated speedDDR4 2933 (PC4 23400)
Memory
Buffer typeRegistered
Memory rank2Rx4
Power
Rated voltage1.2 V
Size & build
Shipping weight0.45 kg
Package size127 × 51 × 51 mm

Questions about this item

How is the 288-pin DIMM installed in a ThinkSystem server, and which step is commonly missed?

Align the notch on the 288-pin DIMM with the slot key, press firmly until both ejector tabs click shut, then verify in the BIOS that the 2933 MHz registered speed is recognised.

What maintenance or replacement will the 32GB TruDDR4 module need later?

No routine maintenance is required; if a memory error occurs, replace the module with another 32GB DDR4 2933 registered DIMM of matching rank and voltage.

What limit appears first when the 1.20V registered memory runs under sustained load?

The DDR4 2933 (PC4 23400) data rate is the fixed ceiling; sustained workloads cannot exceed this transfer speed.

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