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01.25.2008 at 05:40PM PST, ID: 23112834
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7.0

What is the significance of supply voltage in RAM?

Asked by inghfs in Computer Memory (RAM), Miscellaneous Hardware, Computer Motherboards

I'm upgrading my AMD 3200+ system with RAM.
The ram it can only take is PC3200 or less / DDR 400mhz

I've noticed that there are several RAM types meeting the above standard, however, they have different voltage amounts.  

http://www.play.com/PC/PCs/4-/3432614/Kingston-1GB-184-Pin-DDR-400MHz-PC3200-Memory-Module-For-Dell-Optiplex-GX270-SX270-Series/Product.html

This Kingston one for example offer 2.6v and CAS latency of 3


http://www.play.com/PC/PCs/4-/931233/Computer-Memory-1GB-PC3200-DDR-400Mhz-184pin-DIMM/Product.html
This Hynix one costing much less has a higher voltage of 3.3v and a CAS of 2.5 (im already using one of these 1gb sticks).

Aside from needing to match two pairs the same spec to get dual channel advantage, does a higher voltage RAM stick equate to higher speeds, and the same for lower CAS timing?

Also why is it that a 1gb stick of DDR2 memory costs nearly one third if not half the cost of my above memory.  I thought all latest RAM modules would be more expensive (leaving aside the economics of it i.e. more output of the newer types).

Thanks.

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Zones: Computer Memory (RAM), Miscellaneous Hardware, Computer Motherboards
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Solution Provided By: garycase
Participating Experts: 3
Solution Grade: A
 
 
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