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Three things to consider when choosing memory

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1) What is the Maximum TOTAL Amount, that the motherboard will support.

2) What is the Maximum Amount for EACH ram memory slot.

3) What type of Ram Memory is it?


A) What type is it?

Single-Data Rate SDRAM?
SDR Sdram which is erroneously just referred to as SDRAM.

Double-Data Rate SDRAM? DDR Sdram
Double-Data Rate 2 SDRAM? DDR2 Sdram
Double-Data Rate 3 SDRAM? DDR2 Sdram

(See? They are ALL ->
Synchronous Dynamic Random Access Memory)

Then you get down to the basics, that is really supposed to be known...........

B) What Frequency Rate does it operate at? ('Speed')
200MegaHertz? 266MHz? 333MHz? 400MHz? 533MHz? 667MHz?
800MHz? 1066MHz? 1333MHz?

C) What Voltage does it use?
JEDEC has set the standard for Ram Memory.
'High performance' ram memory may use higher voltage.

Example;
DDR Sdram
JEDEC has set the voltage standard for DDR Sdram at 2.5 Volts (DC)
That is what the factory has set as a default voltage, in BIOS Setup.
High performance ram memory? May be 2.6 volts, or 2.7 volts.

D) Ram Timings;
Shorter to explain this way,

http://computer.howstuffworks.com/ram.htm

http://www.hardwaresecrets.com/article/Understanding-RAM-Timings/26

http://en.wikipedia.org/wiki/SDRAM_latency

E) Whether or not ECC or Non-ECC is to be used,

http://en.wikipedia.org/wiki/ECC_memory

ECC ram memory is generally used in a Server computer.
The data (Information) is analyzed 2 to 3 times, before it goes through.

F) Buffered or Unbuffered ram memory:

http://en.wikipedia.org/wiki/Buffered_memory#Buffered_memory

G) Chip Configuration:

The black rectangle chips on the side/s of the ram memory module ('Stick'), are called DRAM chips.

They are arranged in an order, and connected via circuitry, to be accessed as the ram memory manufacturer has deemed.

This you shouldn't have to worry about.
In fact you can probably get away without knowing D) also.

What test is this for?

Post back in a Comment

Regards,
joecoolvette

Posted on Apr 19, 2013

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A. Powering-on the scale
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