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  Ram Question 
 Date Written 
john dabrowski Feb 16, 2011, 01:55pm EST Report Abuse
Hey guys,
I recently upgraded one of my computers and have an extra stick of ram. I was wondering, will it benefit me, or decrease my pc speed installing it my other computer, here's the specs:

Extra stick of ram is 512mb ddr2 533mhz

I currently have 2x2gb ddr2 800mhz running dual channel, installed in slots 1 and 3
I want to install the extra chip in slot 2. I know the ram is compatible with the system, my only concern is that it is a different speed that the other ram. The extra chip will be running on a different channel, but i didn't know if the bios would underclock all the ram to make it compatible with the 533 or would it leave it alone because it's on a different channel.


Asus P5q-se plus
Intel Core 2 Quad Q9550 @3.4ghz
64gb Crucial SSD
2x2gb G.Skill DDR2 800
Seagate 1tb sata II
Ati All-In-Wonder HD
22" ViewSonic LCD TV as monitor
Windows 7 Ultimate 64-bit
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max Guerette Feb 16, 2011, 02:11pm EST Report Abuse
>> Re: Ram Question
The extra memory module you have is rated lower then what you currently have in your machine. Typically, RAM modules will function at the speed of your lowest rated stick.. So if you have 2x 800 Mhz stick and add the 533Mhz stick. Allthough your system memory will increase; your bandwidth will in fact decrease.. In some applications, the difference will be negligeable to you. I would test it and try.. If you play games or run intensive applications, you may see a slight performance reduction. Also in some cases, the memory module will not even work with the two other modules..

Core i7 930 @ 3.36Ghz
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Jon Bailey Feb 16, 2011, 02:46pm EST Report Abuse
>> Re: Ram Question
That 512 stick is going to act like an anchor to your system, as max said, your other chips will run at 533mhz instead of 800mhz, your better off without it.

Max, welcome to the board

"The world is a temple to the self, and these days, there's alot of believers"
Dublin_Gunner Feb 16, 2011, 03:00pm EST Report Abuse
>> Re: Ram Question
Jon Bailey said:
That 512 stick is going to act like an anchor to your system, as max said, your other chips will run at 533mhz instead of 800mhz, your better off without it.

Max, welcome to the board

Not to mention he'll be running single channel.

Lancool PC K62
Phenom II x3 @ 3.5Ghz
4GB DDR2-800
micro Feb 16, 2011, 03:01pm EST Report Abuse
>> Re: Ram Question
Another thing to keep in mind is what do you do with your pc and do you often do you even use all 4gb of ram?

You can view your ram usage via task manager/performance.

If the hardest that you work your pc is with video games, then 4gb is plenty. if you do a lot of video editing (not copying of dvd's) or large Photoshop projects, then more ram will help.

So if you don't use what ram you have, then as stated above, the extra stick will most likely hurt your performance.

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