newbie doubts on memory

[Bileu]

Hey, im kinda new in hardware.

can anybody explain the difference on DIMM, RAMBUS,
DDRAM, SDRAM, please?
which one goes better?

thanx a lot

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[wiltrot]

If you want to upgrade the RAM you need to find out what the mother board supports. You will find this information in your PC manual or the documents that came with the mother board. There's a lot to be said about the differences, but one thing I can and will say is that they are not interchangeable. I recommend getting yourself a book on building & upgrading PCs. There are some places on this site as well as others that are devoted to just that, to teach you PC fundamentals. http://www.PCGuide.com/ubb/wink.gif

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http://trotter.infopages.net/

[Randy_tx]

Here is simple BROAD explanation:
DIMMS: For early socket 7 cpu based systems and very old PII units
SDRAM - For systems from Socket 7 cpus to PIII and Many older AMD Athalon's
DDR - For newer AMD Athalon cpu based systems & Newest P4's
RAMBUS - Strictly for many Intel P 3&4 cpu based systems [NOT Recommended as this technology never really became popular]......
Hope this helps

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XP didn't save Me !

[iisbob]

And to confuse the issue further; SDRAM and DDRDRAM are both DIMM'S ( dual inline memroy modules ), RAMBUS=RIMM (though that's actually a made up term as it doesn't really stand for anything )

SDRAM just means Synchronized Dynamic Random Access Memory; it runs at the same speed as your front side bus ( ie; 100 mhz, 133 mhz, etc..). DDR SDRAM is the same, just runs at double the speed of your FSB ( ie; 100=200mhz, 133=266 mhz ) it sends signal's on the fall and rise of the signal from your CPU and memory.

RAMBUS works by sending twice as much data on the rise and fall of the FSB. It's known as " Quad pumped ".

DDR modules won't work in standard DIMM slots because they've increased their pin count ( 168 for SDRAM, 184 for DDR SDRAM ) with extra data/ground wires to handle the extra load-and of course RAMBUS takes it's own propietary slots, and like older SIMMS ( single 16 bit inline memory modules ) they have to be run in pairs or have a " dummy " card inserted in the other open slot(s).

Kinda answer your question's? http://www.PCGuide.com/ubb/smile.gif

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iisbob

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Memory= 16 K
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Modem=14.4 baud
Sound=ISA Yamaha 8bit
Mouse=2 button MS
Monitor=ACER 12.5"
OS= WIN 3.1

My ultimate gaming system :)

[sea69]

and what about SIMMS- (edo) ram?


edit: whoops, didn't see iisbob's last part.


http://www.PCGuide.com/ubb/wink.gif

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homepage (http://www.seanweb1.homestead.com/3.html)




[This message has been edited by sea69 (edited 01-13-2002).]

[JadedC36]

Bileu;
I think what they are trying to convey is;
Rambus (RDRAM), Double data rate (DDRSDRAM), and Syncronous (SDRAM), are types of DRAM, that can be used as system memory. DIMM, and RIMM are the current kinds of slots that memory is placed into on the motherboard, there have been others such as SIMM, but they are fading from current use. As previously mentioned SDRAM, and DDRSDRAM fit into a DIMM, however not the same DIMM, each one requires a DIMM designed for the memory type. RDRAM fits into a RIMM slot. In every case the IMM stands for Inline Memory Module, the S stands for Syncronous, DRAM for Dynamic Random Access, DDR for Double Data Rate, and R is for Rambus, which I might add, is reccommended for high end P4 systems, as it does out perform other memory types in a P4 system in applications that require high memory bandwidth. It is not very popular because currently it can only be used on PIII, and P4 systems with the appropriate Intel chip set. RDRAM currently is more expensive than DDR, or S DRAM (always has been).

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Mike

[Bileu]

Hey, guys you are incredible!

Got all i need! But here comes another doubt:

The slots set on the MotherBoards for RAMBUS does not fit a DIMM card, for exemple, as it has more pins, wright?

So is it correct to say these MotherBoards won't be upgrade-friendly in a few time ? Will it became unusable? Will I hv to throw my (for P4) Intel MotherBoard away in the future?


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No???
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[Hobit]

Hello Bileu,

Re: So is it correct to say these MotherBoards won't be upgrade-friendly in a few time ? Will it became unusable? Will I hv to throw my (for P4) Intel MotherBoard away in the future.

First,do you already have motherboard that supports RAMBUS? If not I would suggest you avoid purchasing one.

Second, any P4 system with a full size ATX motherboard whether it has RAMBUS, DDRDRAM, or even SDRAM for almost any home use including gaming has reached a point diminishing return. (One has no need of a steamshovel to plant a flower.) Moreover, this will remain the case for the foreseeable future.

The short answer is your P4 motherboard will be upgradeable and servicable for a number of years.

Hobit