Crucial
Crucial Bundle with 256GB (8 x 32GB) DDR4 PC4-21300 2666MHz RDIMM (8 x CT32G4RFD4266), Dual Ranked Registered ECC Memory
Current price
$1,799.00
$7.03/GB
As of Apr 14, 2026 · Verify on Amazon · Price subject to change
vs avg $/GB
30% cheaper
Deal score
91/100
At $7.03/GB — 30% below the DDR4 market average.
Buy on AmazonProduct prices and availability are accurate as of the date of the last daily update and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply to the purchase of this product. Affiliate link.
At a Glance
Strengths
- +30% below the overall DDR4 market average $/GB
- +Price near its tracked low of $1,799.00
- +Limited Lifetime Warranty from Crucial
Limitations
- −Limited review data — only 1 Amazon reviews
- −Requires ECC-compatible CPU and motherboard — not supported on most consumer platforms
All points are derived from price data, customer ratings, and product specifications — not editorial opinion. Updated daily.
Is This RAM Right for You?
Based on 256GB (8x32) DDR4 ECC DIMM specifications.
ECC RAM is not supported on gaming platforms (consumer CPUs/boards)
ECC RAM requires server-grade hardware — not compatible with standard office PCs
ECC RAM protects long renders from silent data corruption — ideal for professional workstations
ECC RAM detects and corrects memory errors — required for data-critical servers and ZFS storage
This is a desktop DIMM — laptop upgrades require SO-DIMM modules. See Laptop RAM Prices for compatible options.
Verdicts based on capacity, form factor, and ECC specifications — not editorial opinion. Capacity recommendations reflect 2026 software requirements.
Price History
Updated daily — track price trends over time
Good time to buy
Price is near its tracked low of $1,799.00 — in the bottom 20% of its recorded range.
Based on tracked price history for this ASIN. More data points accumulate over time — check back as history grows.
Price Range
Tracked low
$1,799.00
Current
$1,799.00
Tracked high
$2,805.80
✓ Near tracked low
Speed Ranking
Top 46%
2666MHz ranks in the top 46% of all DDR4 speeds tracked (1,762 modules).
Specifications
| Memory Type | DDR4 |
| Capacity | 256GB (8x32) |
| Speed | 2666MHz |
| Form Factor | RDIMM |
| ECC | Yes |
| ASIN | B07WQYT31F |
DDR4 Price by Capacity
Average $/GB across all DDR4 modules in the database
| Capacity | Avg $/GB |
|---|---|
| 8GB | $9.97/GB |
| 16GB | $9.79/GB |
| 32GB | $9.33/GB |
| 64GB | $9.33/GB |
| 128GB | $8.96/GB |
Also available from Crucial
Same brand, different configurations
Crucial
Crucial RAM 32GB Kit (16GBx2) DDR4 3200MHz CL22 (or 2933MHz or 2666MHz) Desktop Memory CT2K16G4DFD832A
Crucial
Crucial RAM CT2K32G4DFD8266 64GB (2x32GB) DDR4 2666 MHz CL19 Desktop Memory Kit
Crucial
Crucial 8GB Single DDR4 2400 MT/s (PC4-19200) DR x8 DIMM 288-Pin Memory - CT8G4DFD824A
Frequently Asked Questions
Is the Crucial 256GB (8x32) 2666MHz DDR4 compatible with my motherboard?
Compatibility depends on your motherboard's supported memory type (DDR4), speed, and capacity. Check your motherboard manufacturer's QVL list to confirm this module is validated for your specific board.
Is this DDR4 module a good deal right now?
At $7.03/GB, this module is 30% below the overall DDR4 market average $/GB across all capacities. Deal score: 91/100. Check the price history chart above to see how the price has moved recently. Prices are updated daily from Amazon.
What is 2666MHz RAM used for?
This is an ECC (Error-Correcting Code) RAM module designed for servers, workstations, and NAS systems where data integrity is critical. ECC RAM detects and corrects single-bit memory errors automatically. It requires a compatible CPU and motherboard — most consumer platforms do not support ECC. See our ECC RAM guide for platform compatibility details.
How does Crucial RAM compare to other brands?
Crucial has 127 modules tracked with an average customer rating of 4.6★. This specific module is 30% below the overall DDR4 market average $/GB. Browse all Crucial modules or use the comparison tool to see how it stacks up against Corsair, G.Skill, Kingston, and Crucial.
Similar DDR4 RAM
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A-Tech 256GB Kit (8x32GB) DDR4 2666MHz PC4-21300 ECC RDIMM 2Rx4 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Modules (A-Tech Enterprise Series)
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A-Tech 256GB Kit (8x32GB) DDR4 2400MHz PC4-19200 ECC RDIMM 2Rx4 Dual Rank 1.2V ECC Registered DIMM 288-Pin Server & Workstation RAM Memory Upgrade Modules (A-Tech Enterprise Series)