I'm looking to upgrade my computers RAM and also hoping to save some money by purchasing used RAM. Is there any disadvantages to used RAM? Does it perform the same as it would new?

ThanksIt either works or it doesn't!  Make sure that you have return privileges with a reputable person/company.

When you get it, TEST it overnight with Memtest86: http://www.memtest.org/. ANY error is reason to return the memory.

Best of luck - other forum members may have suggestions as to where to buy used RAM. Check out Ebay you can FIND some good deals on both new and used ram just make sure the seller has a HIGH possitive feed back rating.I have bought from pacific_memory twice recently and they are very
reliable. See below link.

http://search.ebay.com/_W0QQsassZpacific_memoryEspecially with today's RAM prices, I'd never buy used one.
$25 for 1 gig? What are you gonna save? 5 bucks?Go to your local computer shop or check out Newegg.com or TigerDirect.com.  Ram is cheap nowadays.  No advantages to buying used over new.  Just be sure to check the memory using memtest86 or ANOTHER mem check.  Any kind of error and I would return it.