Welcome to Bucaro TecHelp!

Bucaro TecHelp
HTTPS Encryption not required because no account numbers or
personal information is ever requested or accepted by this site

About Bucaro TecHelp About BTH User Agreement User Agreement Privacy Policy Privacy Site Map Site Map Contact Bucaro TecHelp Contact RSS News Feeds News Feeds

Buffered, Unbuffered, Registered Memory, What is the Difference?

Buffered and unbuffered memory

Buffered and Registered memory are the same thing. The "buffer" is a register that resides between the system's memory controller and the RAM. The buffer is often, but not always, used to provide ECC (Error Checking and Correction). ECC is an extension to parity error checking, except that it uses multiple bit to not only detect errors, but also to automatically correct them.

EEC RAM is slower than unbuffered memory because memory operations in unbuffered memory configurations go directly from the controller to memory, while in registered memory configurations the commands are sent first to the memory banks registers before being sent to the memory modules.

Unbuffered memory is used in desktops, notebooks, and mobile devices. In fact most CPUs used in these devices have memory controllers that do not support buffered memory. That's because these devices need speed and low-power consumption. Most servers however use buffered memory. Even though buffered memory is more expensive, ECC is considered essential in a server where system stability is important.

More Computer Anatomy Articles:
• Understanding Your Motherboard
• An Overview of the Printed Circuit Board (PCB) Fabrication Process
• Hard Drives - ATA versus SATA
• The Hard Disk Drive vs. The Solid State Disk
• CompTIA A+ Training Kit - Safety Issues
• Understanding Graphic Cards
• Intermediate PC Build-it-Yourself Guide
• Plug and Play Resource Allocation
• How does a CD Burner work?
• Rambus DRAM (RDRAM)

RSS Feed RSS Feed

Follow Stephen Bucaro Follow @Stephen Bucaro

Fire HD
[Site User Agreement] [Privacy Policy] [Site map] [Search This Site] [Contact Form]
Copyright©2001-2024 Bucaro TecHelp 13771 N Fountain Hills Blvd Suite 114-248 Fountain Hills, AZ 85268