What is this?

[Miknow]

When it comes to memory I know nothing but get cas2 Pc133, But...I am wanting to know what does ECC (Error Correction Code), Unbuffered, Registered, Non-Parity do or help?

[pauldriver]

Originally posted by Miknow
When it comes to memory I know nothing but get cas2 Pc133, But...I am wanting to know what does ECC (Error Correction Code), Unbuffered, Registered, Non-Parity do or help?


ECC, if your motherboard supports it, allows the RAM controller in the chipset to keep additional bits for each word of memory. These additional bits allow the motherboard to correct for single and (sometimes) multiple bit errors in the RAM. This is mostly used for servers or other critical systems. There can be a performance penalty for this kind of memory.

Buffered/Unbuffered and Registered/Unregistered memory refers to the same thing, but uses different names.

The RAM controller in the chipset can provide only so much power to the bus driving the RAM chips. Buffering or Registering is placing special chips on the RAM bus. These chips are called Buffer or Register Latch circuits (hence the name). They will allow you to have more memory slots (on SD RAM 4-8 banks and DDR 2-4 banks) on a system, but exact a performance penalty.

Normally the Buffers/Registers are placed on the memory sticks, but, sometimes they are added to the motherboard (ABIT BX6 2.0 is an example) to support an additional memory slot.

Did this help?

Paul.

[Miknow]

Ya, thx Paul