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DDR1 /2 /3

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June 24, 2010 8:10:33 PM

What is DDR? What is DDR1 /2 /3? and How do I know what I have from hardware, not just CPU-Z?

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June 24, 2010 9:23:09 PM

DDR is Double Data Rate RAM.

RAM is computer memory that is needed for a CPU to have quick access to information on the PC.

DDR is the original.
DDR2 is faster and is still widely used but slowly being replaced by DDR3.
DDR3 is faster than DDR2 and is the newest industry standard.

You can usually tell by looking at the memory modules themselves. The easiest was is by looking for a sticker on the RAM. Typically this sticker will have some indication of speed. But since you likely don't know what to look for just type the RAMs model number into google. This model number may contain letters and is typically on a sticker on the RAM.
a b } Memory
a b à CPUs
June 24, 2010 10:28:47 PM

^+1.

Also, the size and the placement of the notch is different for each DDR DIMM type.
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June 25, 2010 1:43:32 AM

DDR = Double Data Rate. can send data twice in a clock cycle (very cool improvement)
DDR2 is the same as above eexpect it can do it on 2 channels (send 4 lots of data in one clock cycle)
DDR3 is 3 channel can send 6 sets of data per clock cycle.

as far a telling what you have if your not familiar with the way each type looks as they do look very similar check thier stickers. otherwise you can make assumptions based on the motherboard.

ie socket 775 generally uses DDR 2 socket 1156 and 1366 uses DDR3.
a b à CPUs
June 25, 2010 4:03:47 AM

You can download a trial version of Everest Ultimate Edition v5.50 and under Motherdoard>SPD half-way down the page under Enhanced Performance Profile will list the memory speed (ie..DDR-400,DDR2-1066,DDR3-1333,ect...)

http://www.lavalys.com/support/downloads
June 25, 2010 4:27:11 AM

BlackKnight7891, that it is not how it works. It is no more complicated than what dark_lord69 said.
June 25, 2010 3:53:31 PM

unclefester said:
You can download a trial version of Everest Ultimate Edition v5.50 and under Motherdoard>SPD half-way down the page under Enhanced Performance Profile will list the memory speed (ie..DDR-400,DDR2-1066,DDR3-1333,ect...)

http://www.lavalys.com/support/downloads

Or you can dl cpu-z which does the same thing
June 25, 2010 3:54:18 PM

*raises eyebrow*
!