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Green rectangular circuit board with black memory chips and gold edge connector

Kingston Technology Corp.

Kingston Technology Corp. KVR266X72C25/512 512MB DDR 266 ECC Unbuffered memory upgrade

SKU CH-TFEW-WG8CW MPN KVR266X72C25/512

512 MB DDR 266 ECC unbuffered server memory with CL2.5 timing at 2.50 V

  • Total capacity512 MB
  • Rated speedDDR 266 (PC 2100)
  • CAS latencyCL2.5
  • Rated voltage2.5 V
  • Buffer typeUnbuffered
  • 512 MB capacity supports demanding server workloads
  • DDR 266 speed matches PC 2100 system requirements
  • ECC unbuffered design detects and corrects data errors
  • CL2.5 latency reduces memory access delay
  • 50 V operation aligns with DDR platform specifications

512MB DDR 266 ECC module

This 512MB DDR 266 (PC 2100) module carries ECC and an unbuffered design for systems that require error correction without registered signalling. It suits legacy servers or workstations built around the PC 2100 standard.

ECC unbuffered operation

The ECC function detects and corrects single-bit errors, improving data integrity for always-on workloads. Because the module is unbuffered, it plugs directly into boards wired for unbuffered DIMMs and cannot be mixed with registered memory.

2.50V 184-pin DIMM build

Gold contacts and a standard 184-pin DDR form factor allow straightforward insertion into matching slots. The 2.50V operating voltage matches the DDR 266 specification, so the module works with boards designed for that voltage level.

How it compares

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

Price $19.99
Cheaper than about 91% of the 21,161 comparable items (median $397.99).
Total capacity 512 MB
Lower than about 99% of the 20,941 comparable items (median 32 GB).
Price per GB $39.04 per GB
Pricier than about 90% of the 20,941 comparable items (median $8.19 per GB).

New to this? Buying memory and SSDs with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameKingston
Product lineValueRAM
Model nameKVR266 × 72C25/512
Total capacity512 MB
Performance
Rated speedDDR 266 (PC 2100)
Memory
CAS latencyCL2.5
ECC supportYes
Buffer typeUnbuffered
Power
Rated voltage2.5 V
Size & build
Shipping weight0.14 kg
Package size152 × 127 × 51 mm

Questions about this item

Will the CL2.5 timing on this 512MB DDR 266 module ever need adjustment or replacement?

The CAS latency is fixed at CL2.5 by the module's SPD profile; no timing adjustments are required and the memory itself has no moving parts to wear out.

What limit appears first when this ECC unbuffered stick runs at 266 MHz continuously?

Sustained operation is bounded by the 2.50 V supply and the DDR 266 (PC 2100) data rate; the memory controller reaches its throughput ceiling before the module overheats.

How much heat and power does this 2.50 V ValueRAM DIMM produce during all-day server use?

At 2.50 V the module draws only the current needed for DDR 266 transfers, generating modest warmth that standard server airflow handles without extra cooling.

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