is it ok to mix RAM

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Want to upgrade my servers RAM from 4GB to 8GB. Problem is I can't find the exact RAM I used so is it ok to put another 4GB RAM in the server as long as it's the same type/speed and voltage?

 

yea im sure its fine as long as its same speed

 

I have a mix and match setup in my servers, 2 x 4gb RAM and 2 x 1Gb RAM each, Seems fine so far

 

You want to keep a single channel the same across all chips ideally, but between channels I dont think there is an issue.

 

cheers guys off to buy some RAM

 

Yah, like the other said, as long as it's a supported module for your mobo, it should be fine. Now, the ram may default to that which is the "weakest link" inside your machine, i.e. if you had ram which was CAS 2, and the new ram you bought is CAS 3, the system may overall run just a tad slower as the new ram is not as fast as the old stuff... But even that depends on when that ram gets to be used.

If you bought a system a year or two ago, and you get new ram for it now, chances are the new ram is overall 'better' than the old stuff.

Thankfully some manufacturers do place a list on their site with the mobo's supported by their ram. So if your mobo is on the list, you should be pretty safe to get the ram module of that particular manufacturer.

I haven't often come across machines where mixed modules caused problems... laptops might actually be more prone to issues according to some echos I've heard.