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RAM....Go with speed or amount....

by lightsout / February 18, 2008 11:09 AM PST

I have a Asus P4 motherboard that supports 2GB of PC 2700 DDR RAM. My motherboard has 3 slots to hold DDR RAM. Previosly I had two 512MB PC 2700 RAM moduels in there and just recently put in a 1GB PC 2700 moduel in the third slot to total 2GB. After going on the crucial memory website and using their site to scan my motherboard's memory capabilities I got the following message:

"This motherboard supports a maximum of 3GB of memory when using PC2100 or slower memory. When using PC2700 or faster the motherboard only supports two modules at that speed for a maximum of 2GB. If 3 PC2700 parts are installed, they operate at 266 MHz."

So it appears that because I have added more memory to my system I have slowed down the memory to PC 2100, 266 MHz. Now my question is, what is better for over all performance, having my memory at a slower speed, or less memory at a higher speed?

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Since XP or VIsta limits apps to 2.0 GB
by R. Proffitt Forum moderator / February 18, 2008 11:12 AM PST

Why go past this?

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missing my point
by lightsout / February 18, 2008 11:26 AM PST

Your missing my point. I am not planning on going past 2GB. But because I added a third memory module bringing my total memory up to 2GB, I have actually slowed the speed down to 266 MHz as apposed to the 333 MHz it was at when I had only two models in totaling 1 GB of RAM. So I am wondering if it is better to remove one of the 512MB modules to bring the speed back up or leave it as it is?

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by Bob__B / February 18, 2008 9:27 PM PST
In reply to: missing my point

The only way you are going to be sure is to do your own testing.

Guess...512+512+1@233 will be better than 512+1@333.

Why....less swapping.

As soon as you start using that file it's like throwing out an anchor.

Supports dual channel??

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I agree with bob b.
by R. Proffitt Forum moderator / February 18, 2008 9:49 PM PST
In reply to: missing my point

The memory payoff on size rolls off at 512MB, then 1G and past that the return on your investment falls to near zero (for today) after 2GB.

Fix your memory speed issue to keep you and your machine happy.


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check your bios and see what speed your memory is running at
by ramarc / February 18, 2008 10:09 PM PST
In reply to: missing my point

you can also download cpu-z from

if the ram has fallen back to 266mhz, then the decision to keep 2gb would really be dependent on your usage. do you use apps that consume large amounts of ram (photo/video editors, certain games, etc.). if not, dropping back to 1.5gb of 333mhz would probably be better overall.

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