You serious about OEMs?
1) At that price point, no OEM desktop is going to have an SSD. (Even the $1800-$2000 ones may only give you a SSHD at most.)
2) At this price point, you are going to get a crummy entry level GPU that may be barely better than Intel HD Graphics. Define 'normal GPU'. What games do you want to play?
3) Most OEM desktops should be packing at least an 80+ (only) efficiency PSU. (Not Guaranteed.) However, they are very likely to skimp on PSU build quality in order to cut costs and thus these PSUs may potentially be not as durable as good aftermarket ones.
Why not get a DIY build instead?