mismatched memory

January 24, 2010 at 13:44:27
Specs: Windows 7 pro 32b
I have 3 RAM slots available on my board. Each slot capable of 1g DDR stick. I have 1g DDR pc-3200 and 2x256mb ddr pc-3200 sticks. Would it be faster to only have the 1g stick in as opposed to the 1g with the 2x256mb for a total of 1.5g. I read somewhere that if you install memory, it should be matching pairs.

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#1
January 24, 2010 at 13:52:55
Memory must be in matched pairs in order to run in dual channel mode. Depending on what processor you have dual channel may be of benefit. That said, using 1.5GB of RAM is going to yield better performance than 512MB of RAM IMO.


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#2
January 24, 2010 at 14:25:21
My board does not support dual channel anyway. I was worried that the different combination of module sizes would bog it down more than running just a single 1g module.

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#3
January 24, 2010 at 14:40:47
Running different speed RAM can have an impact. The slower RAM pulls all down to the speed.

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Related Solutions

#4
January 24, 2010 at 18:09:15
Too much trouble to list your system specs?

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#5
January 25, 2010 at 13:07:50
The speed of the RAM is all the same at pc-3200. its just different size modules. 1g and 256mbx2 for a total of 1.5g. I want maximum performance with what I have. I didnt want to combine all the modules and have them all burn up. I just want to be sure. As you can tell, I dont know very much about this kind of thing. Now Im thinking that by "matching pairs" they dont mean module size, but speed, latency, buffered or not...correct?
System specs are below

AMD Athlon 3200+
Asus K8N-E
Memory as above
120gb WD HD
Ge Force FX 5500 256mb


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#6
January 25, 2010 at 13:26:44
Matching modules means everything is the same. Twins, if you will. You don't need that though. Just run all of what you have.

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#7
January 25, 2010 at 13:31:07
Run memtest on it to be sure.

You'd need tests to prove but more ram in many cases is better.

Playing to the angels
Les Paul (1915-2009)


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#8
January 25, 2010 at 13:51:24
jefro

Why do you think downhill should run memtest? He didn't indicate any problem other than his concerns, which have been addressed.

Running 1.5GB of RAM is definitely better than running less.


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#9
January 25, 2010 at 14:59:17
Thanks guys. Im satisfied and will throw in the other 2 modules I have. Being that they are both pc-3200 and both CL3, I think I am happy with your answers that it will work. So, if it does blow up....where should I send the repair bill? ;)

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#10
January 25, 2010 at 15:02:09
Send all correspondence to the North Pole.

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