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Two green DDR2 memory modules with gold contacts

Kingston Technology Corp.

Kingston Technology Corp. KTH-MLG4/2G 2GB (2 x 1GB) DDR2 400 PC2-3200 ECC Registered 240-Pin memory upgrade

SKU CH-5DSE-BEDPH MPN KTH-MLG4/2G

2GB dual-channel DDR2 400 kit with ECC registered 240-pin modules for HP/Compaq systems

  • Total capacity2 GB (2 × 1 GB)
  • Rated speedDDR2 400 (PC2 3200)
  • Rated voltage1.8 V
  • Buffer typeRegistered
  • Product type240-Pin DDR2 SDRAM
  • Compatible systemsHP/Compaq
  • ECC registered design protects data integrity on HP/Compaq systems
  • Dual-channel 2GB kit (2 x 1GB) boosts multitasking responsiveness
  • DDR2 400 PC2-3200 speed matches original system specifications
  • 240-pin registered DDR2 modules ensure correct physical fit
  • Kingston validation process confirms 100% compatibility with HP part 343056-B21

System-specific DDR2 upgrade

This Kingston KTH-MLG4/2G kit delivers 2GB of DDR2 400 memory as a matched pair of 1GB modules. It is built for HP and Compaq systems that require PC2-3200 registered ECC DIMMs. The 240-pin form factor matches the original equipment specification exactly.

Thermals and power in use

Operating at 1.80V, the modules draw the standard voltage for DDR2 400 registered memory. No heat spreaders are fitted, so airflow across the DIMM slots handles cooling. Registered buffering adds a clock cycle of latency but reduces electrical load on the memory controller during sustained workloads.

Build fit and constraints

The kit installs in pairs to satisfy the dual-channel architecture of the target HP/Compaq platforms. ECC and registered operation require a chipset and BIOS that support both features; consumer desktop boards without that support will not post with these modules. Verify the system part number 343056-B21 before ordering.

How it compares

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

Price $48.99
Cheaper than about 78% of the 21,161 comparable items (median $397.99).
Total capacity 2 GB (2 × 1 GB)
Lower than about 95% of the 20,941 comparable items (median 32 GB).
Price per GB $24.50 per GB
Pricier than about 69% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameKingston
Model nameKTH-MLG4/2G
Total capacity2 GB (2 × 1 GB)
Product type240-Pin DDR2 SDRAM
Performance
Rated speedDDR2 400 (PC2 3200)
Memory
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Power
Rated voltage1.8 V
Size & build
Shipping weight0.09 kg
Package size173 × 97 × 15 mm
Compatibility
Compatible systemsHP/Compaq

Questions about this item

How do I install the 240-Pin DDR2 modules and which step is often missed?

Align the notch on each module with the slot key, press down firmly until both retention clips click, then verify the system registers the full 2GB at DDR2 400 speed.

What maintenance or replacement will the registered ECC memory need over time?

No routine maintenance is required; if a module fails, replace it with another DDR2 400 PC2-3200 registered ECC kit to maintain compatibility.

What limit appears first when the 1.80V registered ECC kit runs under sustained load?

The DDR2 400 bus and registered buffering set the bandwidth ceiling, so throughput plateaus at the PC2-3200 rating before voltage or thermal limits are reached.

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