4GB 2 X 2GB PC2-5300F 667MHz 240 pin DDR2 SDRAM ECC Fully Buffered FB DIMM Server Low Power Memory for HP Workstation XW8600 (PARTS-QUICK BRAND). Equivalent to HP Part Numbers: 397413-B21, 442823-B21, 461828-B21, EM161AA (2pcs)
Enterprise ECC Stability
Validated by C.R. Vinoth Kumar ยท Founder & Senior Editor
This is an Error Correcting Code (ECC) server module designed to prevent silent data corruption in 24/7 server environments (like TrueNAS/ZFS or enterprise workloads). Ensure your motherboard and CPU officially support ECC before purchasing.
Current price
$29.99$7.50/GBAs of May 30, 2026 ยท Verify on Amazon ยท Price subject to change
$/GB vs DDR2 market avg
27% below avgDeal score
91/100
At $7.50/GB โ 27% below the DDR2 market average.
Buy on AmazonLoad alertsVerify Alternative Stores
Our systems refresh prices daily from Amazon.com to secure the absolute lowest USD market rate. You can cross-reference this RAM kit (ASIN: B0075NKBUE) against alternative marketplaces like Newegg or Crucial before buying.
Product 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. As an Amazon Associate we earn from qualifying purchases.
At a Glance
Strengths
- 27% below the overall DDR2 market average $/GB
Limitations
- Limited review data โ only 8 Amazon reviews
- Limited price history โ recently added to tracking, trends not yet available
- Requires ECC-compatible CPU and motherboard โ not supported on most consumer platforms
- Availability unconfirmed โ may be out of stock or delisted
All points are derived from price data, customer ratings, and product specifications โ not editorial opinion. Updated daily.
Is This RAM Right for You?
Based on 4GB (2x2) DDR2 ECC DIMM specifications.
ECC RAM is not supported on gaming platforms (consumer CPUs/boards)
ECC RAM requires server-grade hardware โ not compatible with standard office PCs
ECC RAM protects long renders from silent data corruption โ ideal for professional workstations
ECC RAM detects and corrects memory errors โ required for data-critical servers and ZFS storage
This is a desktop DIMM โ laptop upgrades require SO-DIMM modules. See Laptop RAM Prices for compatible options.
Verdicts based on capacity, form factor, and ECC specifications โ not editorial opinion. Capacity recommendations reflect 2026 software requirements.
Price History
Updated daily โ track price trends over time
Current
$29.99
37d Low
$29.99
37d High
$29.99
37d Avg
$29.99
Speed Ranking
Top 44%
667MHz ranks in the top 44% of all DDR2 speeds tracked (28 modules).
Z-Score Deviation
Fair / Average Price
Deviation: -1.00ฯ
This product is currently priced within normal historical margins.
Specifications
Memory TypeDDR generation (DDR4 vs DDR5) ยท guide | DDR2 |
CapacityTotal kit memory size ยท guide | 4GB (2x2) |
| Kit Config | โ 2ร kit โ dual-channel ready |
SpeedFrequency in MT/s or MHz ยท guide | 667MHz |
Form FactorDIMM (Desktop) vs SO-DIMM (Laptop) | DIMM |
ECCError-correcting capability ยท guide | Yes |
ASIN | B0075NKBUE |
Spotted a wrong price or spec? Report a data correction ยท How we verify data
DDR2 Price by Capacity
Average $/GB across all DDR2 modules in the database
| Capacity | Avg $/GB |
|---|---|
| 4GBThis product | $8.22/GB |
| 8GB | $6.64/GB |
Frequently Asked Questions
Is the 4GB (2x2) 667MHz DDR2 compatible with my motherboard?
Compatibility depends on your motherboard's supported memory type (DDR2), speed, and capacity. Check your motherboard manufacturer's QVL list to confirm this module is validated for your specific board.
Is this DDR2 module a good deal right now?
At $7.50/GB, this module is 27% below the overall DDR2 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 667MHz 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 โ most consumer platforms do not support ECC. See our ECC RAM guide for platform compatibility details.
How does this brand RAM compare to other brands?
Compare this module against other brands using the RAM comparison tool. Key factors to consider: price per GB, customer ratings, warranty coverage, and compatibility with your specific motherboard.
Is 16GB of RAM enough for gaming in 2026?
4GB is below the 16GB minimum recommended for gaming in 2026. Most modern AAA titles require 12โ16GB. Consider upgrading to at least 16GB for a smooth gaming experience.
What is the difference between a single 4GB stick and a 2ร2GB kit?
This is already a 2ร2GB dual-channel kit โ the correct configuration for maximum performance. Dual-channel mode doubles the memory bandwidth by using both memory channels simultaneously, improving performance in games and applications by 10โ30% compared to a single stick of the same total capacity.
Similar DDR2 RAM
Rasalas
Rasalas DDR2 800 PC2-6400 DDR2 4GB Kit (2x2GB) DDR2-800 Udimm Ram Desktop PC2-6400U 2RX8 1.8V CL6 240 Pin Non-ECC Unbuffered Desktop RAM Memory Modules
NT2GT64U8HD0BY-AD 4GB 2 x 2GB PC2-6400U DDR2 800 NonECC Desktop Memory Kit
4GB 2X2GB RAM PC2-6400U 800MHZ 2RX8 DDR2 NON-ECC Unbuffered For DESKTOP Memory
Expertly Curated by C.R. Vinoth Kumar
Lead Hardware AnalystC.R. Vinoth Kumar is a senior systems systems engineer and memory hardware architect with over 12 years of experience benchmarking computer components, building performance virtualization servers, and assembling local LLM inference rigs. Every memory module tracked in our database is mathematically checked using custom telemetry to isolate nanosecond CAS latency bounds, price-per-gigabyte market averages, and Ryzen/Intel platform pairings.
As an Amazon Associate we earn from qualifying purchases. Prices are updated daily and may change on Amazon.