What is ATA 100/66, RAID, DDR?

[preludexl]

Hey guys, can someone explain to me in easy terms on what those acronyms DDR, RAID, ATA 66/100, UDMA stand for? I was wanting to buy a computer and the sales guy just gave me all this baloney and jacking the price up so high I just left the store. I thought a Hard drive was measured by RPMs? The faster the RPM the faster the access of the HD? Erm, thanks in advance. http://www.sysopt.com/forum/smile.gif

[NDC]

DDR = Double Data Rate
(Memory Modules)

SDR = Single Data Rate.
(Memory Modules)

RAID = Redundant Arrays of Independent Disks (Software or Hardware Methods)

ATA = Advanced Technology Attachment
(The specification for IDE interface)

UDMA = Ultra Direct Memory Access
(Burst Speed Methods)


RPM and Burst Rate (DMA 33/66/100) is a different thing. You will see more increase in performance with higher RPM Vs. Burst Rate. However, the burst rate mode 33/66/100 also plays a part in the increase in performance so that can not be ignored.


Do a search on any search engine and you'll be able to find more in-depth info on the above term. http://www.sysopt.com/forum/wink.gif


[This message has been edited by NDC (edited 03-12-2001).]

[Nighthawk]

Also, Internet.com's Webopedia (http://webopedia.internet.com/) is a good overall computer encyclopedia. It's updated somewhat frequently and has enough info to at least give the idea of what you are interested in.

[Roy]

I often visit www.whatis.com (http://www.whatis.com) for answers to this kind of question.

[preludexl]

thanks everyone. heh, those acronoyms always confuse the heck out of me. i guess those techno buffs like to throw it around more than they need to. http://www.sysopt.com/forum/smile.gif