Fully Buffered Memory (FB-DIMM) is a type of memory technology that is designed to improve memory performance in servers and other high-performance computing systems. It is a variation of Double Data Rate 2 (DDR2) memory that uses a buffering system to increase memory capacity and speed.
In a traditional memory system, the memory controller communicates directly with each memory module. This can cause signal degradation and limit the number of memory modules that can be used in a system. Fully Buffered Memory solves these issues by adding a memory buffer, which acts as an intermediary between the memory controller and the memory modules.
The memory buffer in Fully Buffered Memory is a chip that sits between the memory controller and the memory modules. It receives signals from the memory controller and then redistributes them to the memory modules, improving signal quality and reducing noise. This allows for larger memory configurations and faster memory speeds than traditional memory systems.
One of the advantages of Fully Buffered Memory is its scalability. It allows for the use of a large number of memory modules in a single system, which is important for high-performance computing applications that require large amounts of memory. Additionally, because the memory buffer acts as an intermediary, Fully Buffered Memory can provide faster memory access times than traditional memory systems.
However, Fully Buffered Memory does have some drawbacks. It is typically more expensive than traditional memory, and it also requires a specific type of memory slot on the motherboard, which may not be available on all systems. Additionally, Fully Buffered Memory may have slightly higher latency than traditional memory due to the additional buffering step.
Dual Rank vs. Single Rank MemoryDual Rank and Single Rank memory are terms that refer to the organization of memory modules in a computer system. These terms describe how memory modules are arranged internally and how they interact with the memory controller.
Single Rank memory modules have all the memory chips located on a single rank, or side, of the module's circuit board. This means that all the memory chips can be accessed simultaneously by the memory controller, resulting in faster access times. Single Rank modules typically have lower latency and are faster than Dual Rank modules.
Dual Rank memory modules have memory chips located on both sides of the circuit board, effectively doubling the number of memory chips on the module. While Dual Rank modules have a higher memory density, they may also have slightly higher latency due to the extra time required for the memory controller to access each rank.
One key difference between Single Rank and Dual Rank memory is their impact on memory capacity. Dual Rank memory modules can support higher memory capacities because they have more memory chips. This means that a system with Dual Rank memory can support more memory than a system with Single Rank memory.
In terms of compatibility, Single Rank memory modules are typically more compatible with a wider range of motherboards and memory controllers than Dual Rank memory. This is because Single Rank modules are less demanding in terms of electrical load and are generally more stable.
When choosing between Single Rank and Dual Rank memory, it is important to consider the specific requirements of the system and the performance needs of the applications running on the system. In general, Single Rank memory may be preferable for applications that require low latency and fast access times, while Dual Rank memory may be preferable for applications that require high memory density and capacity.
Other Memory TypesThere are several types of memory available for computers, each with its own set of characteristics and advantages. Here are some of the most common memory types:
- Dynamic Random Access Memory (DRAM): DRAM is the most common type of memory used in computers. It stores data in cells that need to be constantly refreshed, which makes it volatile memory. DRAM is available in different speeds, such as DDR3 and DDR4, and comes in different capacities.
- Static Random Access Memory (SRAM): SRAM is a type of memory that does not need to be constantly refreshed, making it faster than DRAM. It is typically used for cache memory and is more expensive than DRAM.
- Read-Only Memory (ROM): ROM is non-volatile memory that stores data that cannot be changed, such as system BIOS or firmware. It is often used for booting up the computer and is not typically used for storing user data.
- Flash Memory: Flash memory is a non-volatile memory that can be written to and erased. It is commonly used for solid-state drives (SSDs), USB flash drives, and memory cards. Flash memory is slower than DRAM but has higher durability and can retain data even without power.
- Phase Change Memory (PCM): PCM is a non-volatile memory that uses a material that can change between an amorphous and crystalline state to store data. It is faster than flash memory but more expensive.
- Magnetic Random Access Memory (MRAM): MRAM is a type of memory that uses magnetic fields to store data. It is faster and more durable than flash memory, but it is also more expensive.
- Holographic Memory: Holographic memory uses holographic techniques to store large amounts of data in three dimensions. It is still in the experimental stage and is not yet widely available.
When choosing a memory type, it is important to consider factors such as speed, capacity, durability, and cost. The choice of memory type may depend on the specific requirements of the computer system and the applications running on it.
General Information
- Brand Name: Dell
- Part Number or SKU# A0966240
- Type: Memory (RAM)
- RAM Type: Pc2-5300
- Product Name: 8GB DDR2 Sdram Memory Module
- Storage Capacity: 8gb
- Memory Technology: Ddr2 Sdram
- Number Of Modules: 2 X 4gb
- Memory Speed: 667mhz Ddr2-667/pc2-5300
- Data Integrity Check: Ecc
- Signal Processing: Registered
- Cas Latency Timings: Cl5
- Ram Features: Fully Buffered
Physical Characteristics
- Dimensions (W X D X H) : 8.89 X 19.81 X 1.91 Cm (3.5 X 7.8 X 0.75 In)
- Weight: 0.45 Kg (1 Lb)
Compatibility
- DELL Poweredge 1900
- DELL Poweredge 1950
- DELL Poweredge 1950 Iii
- DELL Poweredge 1955
- DELL Poweredge 2900
- DELL Poweredge 2900 Iii
- DELL Poweredge 2950
- DELL Poweredge 2950 Iii
- DELL Poweredge M600
- DELL Poweredge M605
- DELL Poweredge R900
- DELL Poweredge Sc1430
- DELL Precision 490
- DELL Precision 690
- DELL Precision 690 Essential
- DELL Precision 690n
- DELL Precision R5400
- DELL Precision Workstation 690 (750w Chassis)
- DELL Precision Workstation T5400
- DELL Precision Workstation T7400
Contact us or ask for live chat/help if you have any questions about the compatibility of this item to ensure the model's matching features with your current system.
About New Bulk Pack Products
Warranty
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.
Free Technical support on purchased items, our expert consultancy over the phone, by email, by live chat, or by remote login.
Delivery
Shipping Options and Estimated Delivery Time
UPS Shipping Options:
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UPS® First Overnight - Saturday
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FedEx Shipping Options:
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Available throughout all 50 states (Hawaii is outbound only)
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Available throughout all 50 states
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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
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Important notes:
- The processing of orders with Ground Shipping can take up to 24-48 hours. But we try to process all orders the same day.
- We are not responsible for weather problems that may affect the delivery of goods by carriers. We cannot guarantee the exact delivery time, regardless of the carriers' claims.
- If you have any specific delivery time requirements, please contact our customer support and someone from our customer service team will be able to help you.
- You can estimate the shipping cost from the products detail page, also available on the checkout page
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- For urgent shipments, please contact our customer service.
- Shipping cut off 4:00 PM (Monday-Friday) and available blind drop shipment.
