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General discussion

choosing memory

by omiskypluto / May 3, 2007 2:21 AM PDT

i have a DELL Dimension 1100,pentium 4,and it has a 256MB ram, i guess its a PC 3200,im planning to buy a 512MB ram but in the owner's manual it is stated that if i install a mixed pair of memory, the modules will function at the slowest speed if i was to install a 512 ram and the original 256 ram i will be having 768MB ram,but will my PC's performance follow the 256MB ram,and whats the diferrence between installing a the memory modules closest to the processor and futher away from the processor?

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Performance will improve with an increase in total RAM
by linkit / May 3, 2007 2:51 AM PDT
In reply to: choosing memory

Dell Dimension 1100 technical specifications:


Type 333- and 400-MHz DDR SDRAM

NOTE: DDR333 and DDR400 memory runs at 266MHz when configured with Celeron 400MHz FSB processors

NOTE: DDR333 memory runs at 320MHz when configured with Pentium 4 800MHz FSB processors

[end excerpt]

The general rule for DDR RAM is that all installed RAM modules will operate at the speed of the slowest installed RAM module. For more information, read everything in the "Manufacturer Specifications - Dell Dimension 1100" section in the following link:

Your will have a performance improvement in XP simply because your total RAM is increased. You will have further improvement if you install matched pairs to enable dual channel mode

Get at least one 512MB module of DDR400 (PC3200) RAM. Get two modules of 512MB or larger for dual channel mode.

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by omiskypluto / May 4, 2007 2:05 AM PDT

so the bottom line is ,is better that i get another 256MB ram or
one 512 MB ram or two identical 512 MB ram modules?am i right?
but if i were to get another 256MB ram will it have to be from the same manufacturer as the ram given by dell?

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Buy online for a better price
by linkit / May 4, 2007 2:39 AM PDT
In reply to: ok....

Two 256MB modules will operate in dual channel mode and improve system performance in XP.

Two 512MB modules will operate in dual channel mode and provide some performance improvement over two 512MB modules.

The most RAM I'd put in that aging system is 1GB (2x 512MB). I'd install two matching 512MB modules.

Purchase from Dell? Only if you want to pay way entirely too much money. Try,, or the rebate special at a local store.

Example 256MB module:

Example 1GB kit (2x 512MB):

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Regarding which RAM slots to use
by linkit / May 3, 2007 3:08 AM PDT
In reply to: choosing memory

Since that computer only has two RAM slots, where to install a second RAM module isn't an issue.

Typically, the first RAM slot to be populated is closest to the CPU.

As a general rule, one should populate RAM slots only as indicated for the particular computer or motherboard model.

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