Take the 2-minute tour ×  I've got an old Dell Optiplex 170L
with Windows XP that is running about as fast as a speeding
glacier. It's really just used for the kids to play on, but even
they are complaining it's too slow. Rather than spend a few
hundred bucks on a new computer, I thought I might try upgrading
the RAM from 1GB to 4GB. Ran Speccy to check what kind of RAM I
need, and here's what shows:  Speccy image  I see from this that
my current memory type is DDR - but does that mean I can't buy
DDR2 or DDR3 type memory?  share|improve this question For what
it's worth, you could put together another machine for under
$200 that would be blazes faster than this one. (Using Intel
G530 sandy bridge chip). Old DDR memory is pretty expensive. I
would recommend just building a new machine. –  user606723 Jun 3
'12 at 4:13 add comment  2 Answers  up vote 11 down vote
accepted  Correct, your system only supports DDR memory. Newer
DDR2 and DDR3 modules are physically incompatible due to the
notch being in a different