HP 495604-B21 64GB PC2-5300 Memory
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HP 495604-B21 64GB PC2-5300 Ram 667Mhz Ecc DDR2 SDRAM Bulk

Availability: In Stock
Part Number#: 495604-B21
List Price was: $248.84
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New Bulk Pack

Short Description:
495604-B21 64 Gigabytes(GB) (8X8GB) 667 Megahertz (MHz) Pc2-5300 Error correction code (ECC) Double Data Rate 2 (DDR2) Synchronous Dynamic Random Access Memory (SDRAM) 240-pin Dual In-Line Memory Module (DIMM) Memory Kit Proliant Dl360 Dl380 Ml370 for Server | Made by HP | New Bulk Pack
Product Condition:
New Bulk Pack
Warranty provided by ALLHDD.COM:
90 Days

Product Overview of the 64GB PC2-5300 Ram

In the ever-evolving landscape of computer hardware, the significance of Random Access Memory (RAM) cannot be overstated. It plays a crucial role in enhancing system performance and ensuring smooth multitasking capabilities. Among the myriad options available, the HP 495604-B21 64GB PC2-5300 RAM stands out for its specific features and capabilities. In this detailed exploration, we will delve into the intricacies of this RAM module, breaking down its nomenclature, specifications, and the technology that powers it.

HP 495604-B21

Before delving into the technical aspects, it's essential to understand the significance of the product code. The "HP 495604-B21" serves as a unique identifier, offering insights into the manufacturer, model, and other essential details. In this section, we will decode the product code to unravel its meaning. The "HP" in the product code indicates that the 667Mhz RAM is manufactured by Hewlett-Packard, a renowned and trusted name in the world of computer hardware.

Breaking down the model specification, "495604-B21" provides a distinct identity to this particular RAM module. Each digit and character in the code carries specific information about the product's features, capacity, and compatibility.

Unveiling the Capacity: 64GB PC2-5300 RAM

The primary function of RAM is to provide temporary storage for data that is actively being used or processed by the computer. The "64GB" in the product description denotes the RAM's substantial storage capacity, a crucial factor for handling resource-intensive tasks and applications.

The Significance of 64GB

A 64GB RAM module is considered high-capacity, making it suitable for demanding computing needs. It allows for smoother multitasking, efficient handling of large datasets, and improved overall system responsiveness.

PC2-5300: Understanding the Speed Class

The "PC2-5300" specification refers to the RAM's speed class. In simple terms, it indicates the module's data transfer rate. In this case, the "5300" denotes a speed of 5300 megabytes per second (MB/s), showcasing a robust performance that can meet the demands of modern computing.

Examining the Technology: ECC DDR2 SDRAM

To understand the inner workings of the HP 495604-B21 RAM, it's crucial to delve into the technology it employs. The combination of Error-Correcting Code (ECC), DDR2 (Double Data Rate 2), and Synchronous Dynamic Random-Access Memory (SDRAM) defines the module's capabilities.

Error-Correcting Code (ECC)

ECC is a crucial feature in RAM designed to detect and correct errors that may occur during data storage or retrieval. This ensures the integrity of the data, making the RAM module suitable for applications where data accuracy is paramount.

DDR2 Technology

DDR2 is a type of RAM technology that represents an improvement over its predecessor, DDR. It enables higher data transfer rates and greater bandwidth, contributing to enhanced overall system performance.

Synchronous Dynamic Random-Access Memory (SDRAM)

SDRAM is a type of dynamic RAM that synchronizes data transfers with the system's clock. This synchronization optimizes the RAM's speed and efficiency, crucial for meeting the demands of modern computing.

Physical Form: 240-Pin Design

The physical design of a RAM module is a critical aspect, especially concerning compatibility with the motherboard. The "240-Pin" specification of the HP 495604-B21 RAM module refers to its physical form and the number of connector pins.

Connector Pins: Ensuring Compatibility

The 240-pin design signifies that the RAM module is compatible with motherboards that support this specific pin configuration. Checking compatibility with the motherboard is essential to ensure seamless integration and optimal performance.

General Information about the HP 495604-B21

  • Manufacturer: HP
  • Part Number or SKU# 495604-B21
  • Product Type: 667Mhz Memory

Technical Information

  • Storage Capacity: 64GB
  • Memory Technology: DDR2 SDRAM
  • Number Of Modules: 8 X 8GB
  • Bus Speed: 667MHz DDR2-667/PC2-5300
  • Data Integrity Check: ECC (Error-Correcting Code)
  • Signal Processing: Registered
  • Cas Latency Timings: CL5
  • RAM Features: Fully Buffered
  • Platform Support: Proliant Server
  • Form Factor: 240-Pin DIMM


  • This memory module is compatible with the following HP Proliant Servers and Workstations:
  • DL160 G5
  • DL165 G5
  • DL180 G5
  • DL185 G5
  • DL360 G5
  • DL365 G5
  • DL385 G5
  • DL380 G5
  • DL580 G5
  • DL585 G5
  • DL785 G5
  • BL2x220c G5
  • BL260c G5
  • BL460c G5
  • BL465c G5
  • BL480c G5
  • BL495c G5
  • BL680c G5
  • BL685c G5
  • ML370 G5
  • SB460c G5
  • XW8600 (HP Workstation)

In summary, the HP 495604-B21 64GB PC2-5300 RAM stands as a powerhouse of performance, combining a substantial storage capacity with advanced technologies like ECC, DDR2, and SDRAM. Its 240-pin design ensures compatibility with a range of motherboards, making it a versatile choice for various computing needs.

Product Condition:
New Bulk Pack
Warranty provided by ALLHDD.COM:
90 Days

About New Bulk Pack Products

New Bulk Pack products come with clamshell boxes and do not have any manufacturer warranty. Many times manufacturers disassemble whole units to use parts or pulled from a new system. Typically, this product doesn't come with software or instructions unless indicated and no Manufacturer’s genuine warranty. You can take note these are not brand new products.


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ALLHDD guarantees that the products will not have defects in material that will affect the product's functionality during the Standard Warranty Period. The warranty period starts when the merchandise/items from our warehouse.

What does ALLHDD.Com warranty cover?

30-days to 3 years warranty:

Replacement or refund. In the case of material defects, we will try to replace the product first. The product will be replaced before the expiration of the original warranty. For any failure of hardware, if we cannot process the replacement of the product(s)/model(s), we will refund the original selling/invoiced price. The shipping costs and sales tax, if any, are non-refundable. ALLHDD retains the right to decide whether the item(s) will process for replacement or refund.

What is not covered by our warranty?

The reason why our warranty does not cover any problem caused by the following conditions:

(a) misuse of hardware; accidental damage; carelessness product(s) damage; shock; temperature beyond the specification of any product; faulty installation; operation; modification of goods;

(b) any misuse outside the instructions in the user manual for any specific product;

(c) damaged caused by other hardware or equipment. The warranty will void if the item is returned with physical damage, damage to the retail box, removed from the box, counterfeit labels/labelled by them, or any modifications of internal and external covers. Data loss or damages to any other equipment we do not cover by our offered warranty.

What is the Manufacturer/Brand Warranty?

In general, a manufacturer's warranty service/support is a written guarantee to the buyer of a product. Its terms assure the replacement or repair of the product, if necessary, within a specified period after the purchase (2-5 years depending on the brand/manufacturer). It is typically included in the price of the product. Products are brand new and sealed and the original manufacturer box is complete with the Manufacturer's genuine warranty. For most of the brand new/retail products that come with the manual and box, exceptions may apply (i.e., Cisco, Juniper Networks).

For the server parts (i.e., Dell, HPE) to get Full coverage of the warranty server must have a full 3- 5 years warranty. However, ALLHDD.COM will cover the warranty duration if any Manufacturer doesn't support the advertised warranty and there is no refund for those.
Final Sale items are non-returnable/refundable in any situation. Any question? please ask our team before the shipment.

Important notes:

We can provide additional warranty service/support for any product you purchase from us if you need additional warranty coverage before finalizing the order from ALLHDD.Com. You need to ask in live chat/help or call us for more information.

Individual product warranty mentioned on each item product description page/detail page.

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UPS® First Overnight - Saturday
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FedEx Shipping Options:

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FedEx First Overnight®
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Worldwide Shipping Options:

UPS®/FedEx® International Economy

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UPS®/FedEx® International Priority

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UPS®/FedEx® Ground Shipping Canada

Estimated delivery time: 5-8 business days

Important notes:

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