Need RDRAM questions answered

[Wen]

Since I have 2 ram slot unused, I thought I should get some new ram tomorrow on eBay. The one Im buying is pretty cheap, the model is:

2 of
Samsung Korea 0246 256MB/8ECC
MR18R1628DF0- CM8 800-40 012
184-PIN


The one my computer currently uses are:

2 of
Samsung Korea 0244 256MB/8ECC
MR18R1628AFO- CM8 800-40 101
184-PIN


So my questions are:
Will the the ram listed on top be compatible with the ones on the bottom, since it's a diffrent model?

Can I install 2 of the top ones in 1 first ram slot, then 2 of the bottom ones in the second slot, even though they are diffrent models

Do I need matching model numbers (for all 4), or do I just need 2 of each to match.

Do I need matching MHz size for all 4 sticks? or just 2 of each

Will non matching brands work? say 2 sticks are Samsung, while the other 2 are Toshiba, or Kingston.

My computer is an Dell Precision 340, if it matters.

 

[psd99]

As long as it is 184 pin it will physically fit in there. It will also work BUT there just might be a limit on your bios (Basic input output memory) that prevents windows from recognising more than 3 gigabytes in your memory.

But in your case as it seems you will not be exceeding this limit, and I wonder why you are bothering putting in there only 2 x 256mb surely you should consider putting in 2 X 512gb at the very least, this will be more worthwhile.

Do remember your setup will work, but whether it works at the maximum speed is another matter. I could not work out what megahertz each stick is, normally it will say something like ddr 333 or something along those lines.
Make sure these match.

Now now RDRam that used to be a special memory!

 

[Wen]

As long as it is 184 pin it will physically fit in there. It will also work BUT there just might be a limit on your bios (Basic input output memory) that prevents windows from recognising more than 3 gigabytes in your memory.

But in your case as it seems you will not be exceeding this limit, and I wonder why you are bothering putting in there only 2 x 256mb surely you should consider putting in 2 X 512gb at the very least, this will be more worthwhile.

Do remember your setup will work, but whether it works at the maximum speed is another matter. I could not work out what megahertz each stick is, normally it will say something like ddr 333 or something along those lines.
Make sure these match.

Now now RDRam that used to be a special memory!

I was thinking about getting 2x 512mb sticks, but I wasn't sure if the model have to match mine. Also, I noticed that my sticks are 400 FSB/MHz, but when I looked the sticks on eBay, alot of 512mb sticks are listed as 800 MHz, and 16 ECC, and they also read 800-45. SOME 256 reads 800MHz, so that's very confusing for me as well. People said 800-45 won't run on 800-40 required computers, so either the seller is wrong, or those people aren't very smart.

I was told by my friend that as long as the new sticks I buy are PC800-40, 184 PIN will run on my system.

Should I just buy 2x 256 with the same model just to be on the safe side..I will have 1024 RAM after the upgrade, Im not sure how much of an improvement that would be, unless someone can explain to me in very detailed exactly what MUST match in order for the sticks to run a fastest speed, I might just get the 256s so I don't waste money.

If more info are needed, here they are:

YOUR COMPUTER CHECK RESULTS

Computer Make: Dell Computer Corporation
Computer Model: Precision WorkStation 340
Computer Version:
Motherboard Model: Precision WorkStation 340
Motherboard Version:
CPU: Intel Pentium 4 2.53Ghz
Installed Memory: 4 slots: 256 MB, 256 MB, empty, empty
Matched - Machine: Precision WorkStation 340 (400MHz FSB) (non-ECC)
Matched - Model: http://www.memoryx.net/deprwo3404fr.html
ECC: Yes


MEMORY THAT MATCHES YOUR COMPUTER

Maximum Memory 2GB Memory Slots 4 (2 banks of 2) Install in pairs non-removable base memory 0MB This Machine can take ECC or non-ECC memory. When you mix ECC with non-ECC, the ECC function will be disabled. For the ECC memory see "Dell Precision WorkStation 340 (400MHz Front Side Bus) (ECC) Memory"

 

[psd99]

take out all sticks and get 2 x 512. This will yield the same result as you wish to obtain, except it will be a little faster providing that your motherboard can support 800mhz. If it does not support this I think it will still work but at a restricted speed. You should get POST (power on self test) and get into Windows.