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PC133 vs. DDR vs. DDR2

post #1 of 30
Thread Starter 
what is the physical difference between these types of ram... which is the longest? shortest? fatest?
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post #2 of 30
techinally ddr2 is fastest, what do you mean longest/shortest pc133 is just not even worth talking about to be honest the pyshical differences between the 3 types of ram is the number of pins they have and the stock voltage they use....i think
    
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post #3 of 30
Thread Starter 
Quote:
Originally Posted by mootin
techinally ddr2 is fastest, what do you mean longest/shortest pc133 is just not even worth talking about to be honest the pyshical differences between the 3 types of ram is the number of pins they have and the stock voltage they use....i think
I know which is fastest and how many pins they have but I just wanna know which is longest or shortest? like length...
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post #4 of 30
ooohhh i thought it said fastest not fatest my bad , arent they all the same lenght and width
    
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post #5 of 30
This can halp, it's a good place to start: http://www.howstuffworks.com/ram.htm

The thing is like a little more complicated than it seems. Allthow it seems logical that DDR2 should perform better than the DDR it's not always the case, but the fact is that
- PC133SDRAM performs the worse with a max bandwidth of 1066MB/s
- DDR performs better depending on the frequency. The difference from the tech pov is huge between SDR and DDR. DDR200 has a bandwidth of 1600MB/s and it goes to 3.2GB/s or 4.0GB/s for DDR400 or DDR500, so it outperforms PC133 DDR easily.
- DDR2 performs slightly better due to higher frequency than the DDR. Roughly we can say that mainstream DDR400 equals mainstream DDR2-533 on performance. With DDR2 you start seing gains when using DDR667, DDR800 or higher.
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post #6 of 30
Thread Starter 
Quote:
Originally Posted by dragosmp
This can halp, it's a good place to start: http://www.howstuffworks.com/ram.htm

The thing is like a little more complicated than it seems. Allthow it seems logical that DDR2 should perform better than the DDR it's not always the case, but the fact is that
- PC133SDRAM performs the worse with a max bandwidth of 1066MB/s
- DDR performs better depending on the frequency. The difference from the tech pov is huge between SDR and DDR. DDR200 has a bandwidth of 1600MB/s and it goes to 3.2GB/s or 4.0GB/s for DDR400 or DDR500, so it outperforms PC133 DDR easily.
- DDR2 performs slightly better due to higher frequency than the DDR. Roughly we can say that mainstream DDR400 equals mainstream DDR2-533 on performance. With DDR2 you start seing gains when using DDR667, DDR800 or higher.
I already know I all that you miss understood my question.....not bandwidth or speed but the physical LENGTH...6 inches stuff like that........

Someone correct me if I'm wrong but I believe DDR2 is longest, then PC133, then DDR is the shortest right?
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post #7 of 30
I remember I had on my old ECS K7S5A both SDR and DDR and they had exactly the same length. The only thing that made impossible to put SDR in the DDR slot were some pins that were incompatible. DDR2 dunno, never seen such ram modules. I'll have to come back on this later
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post #8 of 30
Quote:
Originally Posted by guitar22891
I already know I all that you miss understood my question.....not bandwidth or speed but the physical LENGTH...6 inches stuff like that........

Someone correct me if I'm wrong but I believe DDR2 is longest, then PC133, then DDR is the shortest right?
I believe DDR2 is the exact same length as DDR and yes PC133 is the shortests. The DDR2 seperation slot is placed forward of where the DDR seperation slot is so that you cannot plug DDR2 into a DDR slot and vice/versa...
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post #9 of 30
Actualy it seems to me the DDR2 and DDR have also the same length, check this out: a mobo wich supports both ram types based on Intel 915 chipset:
http://www.msicomputer.com/product/p...bo-FR&class=mb
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post #10 of 30
pc133 is teh shortest, then it is ddr, then it is ddr2 i think because i never seen one bcause i am an amd guy
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