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what does PC stands for in the memory speed?

Forum Motherboards & Memory : Memory - what does PC stands for in the memory speed?

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bozoclown2000   08-15-2002 at 01:27:19 AM

Hi
What does PC means in the memory field such as if we say PC133 ..

thanx

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Chuck232   08-15-2002 at 03:47:54 AM
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PC in DDR RAM stands for the bandwidth. For example, PC2100 means 2100MB/s bandwidth.

In RDRAM, it's basically its speed. For SDRAM, it's the same.

<i>Past mistakes may make you look stupid, but avoiding future ones will make you look smart!</i>

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eden   08-15-2002 at 04:46:06 AM
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Yeah but what does PC stand for, that's what the poster wanted to know. I also was about to post such a question!

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Is the opportunity to earn money by working, free?

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nja469   08-15-2002 at 06:05:02 AM
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ummmmmmmmmmm miss cleo says "performance chunk.. or chip" lol.. i don't know. Personal computing RAM?

Does anyone know? Very curious.

"Opinions are like assholes, everyone has one"

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Crashman   08-15-2002 at 08:36:49 AM
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It stands for Personal Computer.

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eden   08-15-2002 at 09:11:51 PM
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Makes no sense in relativity to the speed really..

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Is the opportunity to earn money by working, free?

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Crashman   08-15-2002 at 11:14:46 PM
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Er, 133MHz for Personal Computer (the SDRAM part is understood, as there was no EDO at that speed).

<font color=blue>You're posting in a forum with class. It may be third class, but it's still class!</font color=blue>

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Oracle   08-16-2002 at 03:56:29 PM
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I guess 60ns EDO wasn't meant for Personal Computers then!
:smile:

<font color=red>A platform is not an oil rig.</font color=red>

Reply to Oracle
Crashman   08-16-2002 at 07:33:43 PM
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LOL, EDO was called EDO beffore it was used in PC's. PCx standards were named before the memory was created.

<font color=blue>You're posting in a forum with class. It may be third class, but it's still class!</font color=blue>

Reply to Crashman
bum_jcrules   08-16-2002 at 08:09:38 PM
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Just to back up the Crashman...(Crash, Thanks for looking into that stuff for me.)



PC100 is not the technical term for the memory type.

PC66, PC100, PC133, PC150, etc. are all forms of Synchronous Dynamic Random Access Memory. (SDRAM)

EDO is Extended Data Out Dynamic Access Memory.

FPS is Fast Page Mode Dynamic Access Memory.

I don't know where the PC came from other than from Intel. PC100 was a specification they created so memory manufactures could make modules for the i440BX and used a 100MHz bus. Jedec created the PC66 standard and Intel created the PC100 standard.

So if you want to know what the PC stands for ask someone at Intel.

<b>"If I melt dry ice in a bathtub, can I take a bath without getting wet?" - Steven Wright</b>

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Oracle   08-16-2002 at 08:51:21 PM
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Actually, I don't give a rat's ... where PC came from! They could have called it GOOFY100 and GOOFY133 as far as I'm concerned!
While DDR actually means something related to the RAM, PC doesn't seem to.


<font color=red>A platform is not an oil rig.</font color=red>

Reply to Oracle
bum_jcrules   08-16-2002 at 09:01:39 PM
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I did not mean to offend. Sorry.

All I am saying is that I have no idea where to find the origin of the "PC" in PC66, etc.

As for DDR, that is the technical name. It also uses the "Street name" of PC2100, PC2700, Etc. The Technical name is DDR200, DDR266, etc.

That is because it is <b>Double Data Rate</b> Synchronous Dynamic Random Access Memory.

So where the street name came from... ??? Who knows. All I know is where the technical standards came from and why they call things they way they do.

Again, I meant no harm.

<b>"If I melt dry ice in a bathtub, can I take a bath without getting wet?" - Steven Wright</b>

Reply to bum_jcrules
Oracle   08-16-2002 at 09:30:20 PM
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No, no, you got me wrong!
I wasn't offended at all.
I know all those things already.
I was under the impression you tried to explained to me the origins of PC. I didn't started this thread and I couldn't care less where PC comes from.
My last post was in no way intended to respond to you in an agressive manner. I said it before and I'll say it again, writings are very inefficient when it comes to tone rendering.
I'm sorry if you construed my last comments as an attack, it really wasn't :wink:


<font color=red>A platform is not an oil rig.</font color=red>

Reply to Oracle
JaeSun   08-17-2002 at 02:09:02 AM
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DDR=double data rate

PC400 .. the 400 refers to the Mhz rating.....

since DDR is double data rate, PC400 is essentially running at 800Mhz so to say ....

as for PC, who knows,

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Reply to JaeSun
eden   08-17-2002 at 05:22:41 AM
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You're wrong dude, when you show PC266, you are referring to the fake-DDR result. PC400 means 400MHZ DDR, as in 200MHZ*2.
Therefore PC266 does not mean it runs at 533MHZ.

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Is the opportunity to earn money by working, free?

Reply to eden
JaeSun   08-17-2002 at 05:29:07 AM
- 0 +

yea, sorry....i just re-read what i wrote...sorry....wouldnt make sense when i always read people saying they cant get their DDR400 memory past 165Mhz sometimes ....lol

_____________
100 Character Limit Sucks!!

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macodi   08-23-2002 at 11:52:57 PM
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Glad they adopted the "PC" prefix...wouldn't want the mainframe guys accidentally using this stuff.

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shallowbaby   08-24-2002 at 06:51:56 AM
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is it me or was that in the FAQ?

<font color=green> there's more to life than increasing its speed -Ghandi</font color=green>

Reply to shallowbaby
utcomputerboy   08-24-2002 at 02:35:39 PM
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Its a marketing term. Meant to get rid of "confusing" terms we us all the time. The average person understands Personal Computer (PC). So its easy for them to upgrade. There is a lot of different volitile and non-volitile memory, PLA, FPLA, ram, rom, prom, eprom, eeprom, flash. You get the point. Its PC because it is the standard used in the PC. Convince your mom that she wants sdram at 100mhz instead of PC100. You might get half way through before she gives up.

Reply to utcomputerboy
blyzzard   06-18-2008 at 06:02:30 PM
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PC in the PC Rating stands for Pipeline Clock. If you dont know what the Clock or the Pipeline are then checkout the wikipedia SDRAM entry located here http://en.wikipedia.org/wiki/SDRAM Basically the Clock is the signal used to coordinate 2 or more signals and the Pipeline is the set of data processing elements connected in series, so that the output of one element is the input of the next one. So the PC or Pipeline clock refers to how fast those signals can relay the data to be processed, its usually relative to the bus speed.
Blyzzard
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