RAM compatability, fs315m

[kingbal]

Hi guys, got an fs315m running 512mb pc3200 333 RAM.

Jus bought and installed another 512 pc3200 400.

The ram seems to work ok, but is it working at 333? and would i benefit much more from having 2 x 512mb pc3200 400?

thanks all!

[Blencogo]

Hi kingbal and welcome to Club Vaio.

Yes, you are right - if you mix the speed of your memory modules, they will only operate at the speed of the lowest spec module. In your case 333 MT/s.

Actually you should check what you have because DDR333 are usually PC2700 bandwidth modules. PC3200 is normally DDR400. You may find that you actually do have 2 x DDR2-400.

There would (in theory) be a 20% speed increase by using two DDR2-400, but I doubt this would be obviously noticeable in normal use.

Your system will support up to 2048MB of PC5300 DDR2-667 which would give a theoretical speed increase of 100% - at a price!