Write speed decreased after reinstall of Win 7 without secure erase.

I want to reinstall windows from an image. I want to do this because I re-installed windows on a new samsung 830 256gb ssd but I didn't use secure erase before doing so. After the install my random write speed went down to 330ish MB\s when i was at 400 MB\s before. My current win 7 install is optimized and works fine; only my random write speeds have decreased and it's bugging me lol. Do you think a secure erase and reinstall would improve my write speed? or am I just being obsessive lol.

Try to Logoff your PC and just stay it idle for 4-5 hours so the Garbage Collection will work. Then try to benchmark it before and after Garbage Collection mode. See the difference.

thanks man I left the pc off and the used performance optimation and it got me back upto speed.