Difference in SD and RD RAM?

RD is rambus i think, SD is SO-DIMM

rambus is a waste nowadays, cheaper DDR2 is just as fast. it use to be that rambus was super fast, back when superfast meant 667mhz.
 
Yeah ADE is right SD is single channel and DDR is double data rate, I have yet to see RD-RAM, but from what I know about them, servers uses them and they cost a fortune.
 
SDRAM stands for synchronous dynamic RAM. Typically when RAM is refered to as simply SD-RAM, it's something along the lines of PC66 to PC133. However, it's not limited to this as DDR RAM is actually DDR(double data rate) SDRAM.

RDRAM is Rambus and not used anymore. It was basically a failed attempt at a new standard. Some high-end computers around 2001-2002 came with it but it did have it's problems. I hear it doesn't multi task well, and you HAD to get it in pairs. I also hear it's only a 16bit data path, where DDR is 64bit (128bit duel channel) Eh, I beleive RDRAM does run duel channel as well, but I don't know if that makes it 32bit or not...

Regardless...that's what I know on the topic. Hope it helps ;)
 
I'm afraid so ;)

Though as I said, typically when someone says SDRAM, they mean PC66-133. So as it doesn't "mean" single rate, that's probably what it would refer to.
 
RDRAM (Which, interestingly enough, doesn't really stand for anything, they just wanted to use the same naming convention, i.e. RD & SD) was the first to use dual channel technology. Problem was, it only ran in dual channel, so you had to buy two identical sticks at a time.
 
RDRAM? Nah, it phased out almost the day it was introduced ;) You can find some on Newegg but it's VERY expensive for fairly small chips.
 
Good now I have a bunch of crap to throw in my closet, YES!!, I was looking forward to that:rolleyes: Oh, well I will wait on that Dell stuff next year.
 
PohTayToez said:
RDRAM (Which, interestingly enough, doesn't really stand for anything, they just wanted to use the same naming convention, i.e. RD & SD)
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Yes it does, RD means Rambus Direct, It was a joint thing between Rambus and Intel that fell on its face. Think some video cards and some video game consoles used it too.
 
StrangleHold said:
Yes it does, RD means Rambus Direct, It was a joint thing between Rambus and Intel that fell on its face. Think some video cards and some video game consoles used it too.
Click to expand...

You know, I was just looking up random console information last night and found out the N64 apparently used RDRAM :rolleyes:
 
Yes it did, Rambus is pretty good in the console environment. It's just in PCs where it's not great.
 
part of the reason the early pentium 4s werent popular was that they used RD ram, which was expensive. they got popular when they released the northwoods core, which was a good CPU and used DDR ram. wait, the wilamettes used PC133 for a few months until the northwoods release.......i know way too much on this subject.:rolleyes:
 
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