Calculating Power Requirements

[TomWaits]

I'm researching the building of a new system and trying to figure out how much power each component will use. I'm looking at using at least 2 PC-4000 512MB Ballistix sticks, but their data sheet had no indication of amps needed. I have only found a generic reference of a 128 MB DDR stick using 2.2 amps @ 12V. I thought perhaps just doubling that value for my 512, but I have read various posts of people adding one more stick to their machine and suddenly they've exceeded their power supply.

 

[4Ryan6]

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I'm 4ryan6 <b><font color=green>><></font color=green></b> and I approved this message!
<A HREF="http://forums.btvillarin.com/index.php?act=ST&f=41&t=2541&st=0#entry20385" target="_new">Specs</A>

 

[TomWaits]

Thanks, but is all DDR the SDRAM variety?
Also, I was trying to break this down as amps * volts; what voltage does RAM run at?
<P ID="edit"><FONT SIZE=-1><EM>Edited by TomWaits on 01/04/05 00:09 AM.</EM></FONT></P>

 

[Cybercraig]

3.3v rail powers ram. Most people run it at 2.8vdc. By the way, it could never use 2.2amps. Each stick actually only uses about 10 watts.

Abit IS7 - 3.0C @ 3.6ghz - Mushkin PC4000 (2 X 512) - Sapphire 9800Pro - TT 420 watt Pure Power
Samsung 120gb ATA-100 - Maxtor 40gb ATA - 100
Sony DRU-510A - Yellowtail Merlot

<P ID="edit"><FONT SIZE=-1><EM>Edited by Cybercraig on 01/04/05 05:39 PM.</EM></FONT></P>