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Kingston

Kingston 16GB DDR4-2666 ECC UDIMM

KSM26ED8/16HD
Kingston DDR4 UDIMM-ECCmemory16GBDDR4-2666UDIMM-ECC
$12.44/GB
$199.01
newIn Stock
This offer: sold by MemoryMasters ยท Amazon says New / Unknown
Prices refresh about once a day
Price updated
Price accurate as of Oct 22, 2026, 06:19 AM
Buy on Amazon

The Kingston 16GB DDR4-2666 ECC UDIMM is a 16GB DDR4 ECC server memory module in new condition. It is in stock at $199.01 - $12.44/GB.

Same capacity, other options
DriveInterfaceCond$/TBPrice
A-Tech 16GB DDR4-2133 ECC RDIMMDDR4-2133New$5566.72$86.98Buy on Amazon
Samsung 16GB DDR4-2133 ECC RDIMMDDR4-2133New$7292.16$113.94Buy on Amazon
Samsung 16GB DDR4-2666 ECC RDIMMDDR4-2666New$12354.56$193.04Buy on Amazon
Samsung 16GB DDR5-4800 ECC RDIMMDDR5-4800Refurb$40896.00$639.00Buy on Amazon
Model context

Part of the Kingston line we track.

Quick Verdict

Kingston 16GB DDR4-2666 ECC UDIMM-ECC at $12.44/GB. Warranty varies by seller. Verify your server's QVL before purchase.

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Specifications

Capacity16GB
Module TypeUDIMM-ECC
GenerationDDR4
Speed2666 MT/s
ECCYes
Rank / Orgโ€”
Warrantyโ€”
ASINB08GKVTVP9
Market context

Against every other module we have an in-stock price for today, this one is cheaper per gb than 48% of them (19 of 40). The cheapest we can currently buy is $4.92/GB; the middle of the market is $11.66/GB.

Compare against every 0.015625TB drive we track โ†’Cheapest per terabyte, all categories โ†’Category price trends โ†’
How it compares - 16GBDDR4-2666
#1Samsung 16GB DDR4-2666 ECC RDIMM
$8.75/GB
#2Samsung 16GB DDR4-2666 ECC RDIMM
$12.06/GB
#3Kingston 16GB DDR4-2666 ECC UDIMMTHIS DRIVE
$12.44/GB

Compare to similar 16GB DDR4-2666 modules

Samsung
16GB DDR4-2666 ECC RDIMM
$8.75/GB
$139.99
REFURB
Samsung
16GB DDR4-2666 ECC RDIMM
$12.06/GB
$193.04
new

Also appears in

Server memory
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Frequently Asked Questions

Yes. At our last check it was $199.01 ($12,736.64 per terabyte at its 0.015625TB capacity), sold new under ASIN B08GKVTVP9. Amazon sets the final price at checkout.

This listing (KSM26ED8/16HD, ASIN B08GKVTVP9) carries no renewed, recertified, refurbished or pulled claim in its title, and Amazon reports it as new. On this site that is what "new" means: sold as factory-new.

This row (ASIN B08GKVTVP9) is stored as a DDR4 UDIMM-ECC at DDR4-2666. A DDR4 module fits only a DDR4 platform (the keying and voltage differ by generation), and registered and unbuffered modules are not interchangeable - check your board's memory specification for DDR4 UDIMM-ECC support.

Use Case Scenarios

๐Ÿ–ฅ๏ธ
Virtualization Host Density
Proxmox, ESXi or Hyper-V host packing more VMs per socket.
โœ“ Excellent fit
RAM is the binding constraint on VM density long before CPU. Adding 16GB ECC modules lets a host carry more guests per socket, and ECC prevents a single bit-flip from corrupting a guest's memory.
๐Ÿ’พ
ZFS ARC Cache
TrueNAS or ZFS server where read performance depends on cache hit rate.
โœ“ Excellent fit
ZFS turns every spare gigabyte into ARC read cache โ€” more RAM directly raises cache hit rates on active datasets. ECC is strongly recommended for ZFS, whose integrity guarantees assume trustworthy memory.
๐Ÿ—„๏ธ
Database Working Set
PostgreSQL, MySQL or in-memory analytics needing the working set resident.
โœ“ Excellent fit
Databases live or die on buffer pool size. Fitting the working set in memory converts disk reads into RAM reads โ€” a latency improvement no storage upgrade matches. ECC protects against silent corruption in long-running instances.
๐Ÿ 
Homelab ECC Upgrade
Home server or NAS build stepping up from consumer memory.
~ Good fit
For 24/7 homelab duty, ECC server memory at today's used/refurb prices is often cheaper per GB than new consumer RAM โ€” with error correction included. Verify your board and CPU actually support ECC before buying.

Maintenance & Troubleshooting

Maintenance Checklist

On installRun a full memtest86+ pass
Boot memtest86+ and let it complete at least one full pass before trusting the module with production data. Catches infant-mortality defects and seating problems immediately.
On installVerify detected speed and channel population
Check BIOS/IPMI that the module runs at the expected MT/s and that channels are populated per the motherboard manual's DIMM order. Uneven population silently costs bandwidth.
MonthlyReview ECC error counters
Check IPMI/iDRAC/iLO event logs, or edac-util on Linux, for corrected ECC errors. Occasional corrected errors are normal; a climbing count on one DIMM predicts failure โ€” replace it.
AnnuallyReseat and dust during maintenance windows
Airflow debris and socket oxidation cause intermittent errors. During planned downtime, blow out slots and reseat modules showing any corrected-error history.

Troubleshooting Guide

Cause: Unsupported module type (UDIMM vs RDIMM), wrong DDR generation, or incorrect slot population order.
Fix: Confirm the platform supports this exact type and generation (check the QVL), install in the manual's specified slot order, and reseat firmly until both latches click.