I use to have a E350 based HTPC... i put up with it only for so long till i got rid of it.. too sluggish for me.
I was using it with Win 7 64bit purely for Media Portal.
Now running a A6-3500 and much happier.. I know they use much more power, but there is a good reason for that.
But if you are using just as file server, then it will be fine...
Pics of my rig
i7 4770k, custom water cooling, 8Gig Corsair Dom 2133 9-11-10-27, Asus Maximus VI Hero, SilverStone ST-1500 PSU, Creative X-Fi Platinum, Logitech Z-5500D , 2xHIS 7970 CF, Asus VW246H Monitor, Win 7 64Bit HP, Corsair 800D Case