Hi

I have a M61 PM-S2 GIGABYTE mother board with 4 memory slots,
2 slots occupied by 512x2 DDR800 ULTRA CL4 GEIL(discontinued by manufacturer)
I want to add more RAM in the two remaining slots. (please see system info in my signature)
Is it imperative to install the same ram memory stick in each slot ?Once installed , does the computer recognize the sticks or will I have to do something else?
Thanks

Give crucial.com a try:
http://www.crucial.com

It will let you know the upgrade path but you don't have to purchase from them.

SP3 has been available for almost a year now and has several Critical Security updates so in IE go to Tools then Windows Update then install SP3.

Run Secunia Online Software Inspector to see what other applications are vulnerable:
http://secunia.com/vulnerability_scanning/online

Thanks

Let me know how you make out.

My diagnostic program shows that each module runs at 400MHZ.
Question: Is not each module suppose to run at 800MHZ, if it is a DDR 800 module?
Thanks

That means that your system runs at that speed and DDR 800 modules can run up to 800MHZ.

The RAM they quote is the cheapest they have on hand so that is why I recommend taking the system to a local PC shop for the upgrade as they will install the RAM and check for compatibility and give you a Warranty and probably match crucial.com's price.

At least phone a local PC shop and give them your system specifications and ask them how much RAM upgrade will cost.

DDR2 SDRAM:
http://en.wikipedia.org/wiki/DDR2_SDRAM

Thanks for the input.

True to what YoKenny said, it is nice to have a warranty. However, buying off of a site of Newegg and installing yourself is so simple. DDR2 is so cheap, it is insane, and it is one of the easiest upgrades you can do.

http://www.youtube.com/watch?v=60yv1jY6T-4...feature=related

AJ

Thanks for the link.