What can be done to upgrade this mITX build?

[McLubbin]

I am going to be building my friend a budget gaming pc... His budget it around 450 and he wants a mITX form factor... This is what I have so far...

http://pcpartpicker.com/b/A1A

What can be done to upgrade without going over budget?

Thanks

Also, I may not buy that GPU... I might sell him the GTX550ti I am using because I am definately needing an upgrade... But it does however play BF3 at 40 FPS on ulta (1600x900 display though)

 

[clutchc]

If you use a green drive as a boot drive, be sure to go to Control Panel - Hardware and sound - power options - edit plan settings - change advanced power settings and be sure it is set to 'turn off hard drive': never. Green drives have a habit of sometimes going into sleep mode if not disabled.

One upgrade might be to consider a inexpensive, small (30GB - 64GB) SSD to use as a cache drive to the HDD using Intel Smart Response Technology. I have a 64GB caching my HDD and I can't tell the difference from when I had the SSD as my boot drive C: And it is really simple to setup.
http://www.overclock.net/t/1227655/how-to-set-up-intel-smart-response-technology-ssd-caching